Uma atleta percorreu cinco oitavos de uma pista e ainda precisa percorrer 75 quilômetros para completar seu percurso . Quantos quilômetros a atleta percorrerá no total?

Answers

Answer 1

Answer:

The athlete will run 200 kilometers.

A atleta percorrerá 200 quilômetros no total.

Step-by-step explanation:

She will run x kilometers.

She has already run 5/8 of the distance(5/8 of x), and still needs to run 75 kilometers.

So

[tex]\frac{5x}{8} + 75 = x[/tex]

[tex]x - \frac{5x}{8} = 75[/tex]

[tex]\frac{8x - 5x}{8} = 75[/tex]

[tex]3x = 8*75[/tex]

[tex]x = \frac{8*75}{3}[/tex]

[tex]x = 200[/tex]

The athlete will run 200 kilometers.

A atleta percorrerá 200 quilômetros no total.


Related Questions

Which expression has the same value as the one below?
22+(-32)

○ 22+(-22)+(-10)
○22+(22)+(-10)
○22+(-22)+(10)
○22+0+32​

Answers

Answer:

Option A

Step-by-step explanation:

22+(-32) is the same thing as 22-32.

[tex]22-32=-10[/tex]

Let's see if the given options are equal:

Option A:

[tex]22+(-22)+(-10) \\22-22-10\leftarrow \text{Distribute -1 into the Parentheses.} \\0-10\\\boxed {-10}[/tex]

Option A's expression has the same value as the expression given.

Option B:

22+(22)+(-10)

[tex]22+22-10\\44-10\\\boxed {34}[/tex]

Option B's expression does not have the same value as the expression given.

Option C:

[tex]22+(-22)+(10)\\22-22+10\\0+10\\\boxed {10}[/tex]

Option C's expression does not have the same value as the expression given.

Option D:

[tex]22+0+32\\22+32\\\boxed{54}[/tex]

Option D's expression does not have the same value as the expression given.

The correct answer should be A: 22+(-22)+(-10).

Answer:

the answer is A

hoped this helped

The number of new contributors to a public radio station's annual fund drive over the last ten years is ​63, 58, 61, 72, 98, 103, 121, 147, 163, 198 Using Microsoft Excel, develop a linear regression model that predicts the number of new contributors. Explain the slope of this model. Based on this model, how many new contributors would you predict for the following year?

Answers

Answer:

The number of potential members predicted in next year's estimate becomes 193. The further explanation is given below.

Step-by-step explanation:

The slope of the model,

m = 15.345

c = 24

After comparing with the equation,

⇒  [tex]y=mx+c[/tex]

we get,

⇒     [tex]=15.345x + 24[/tex]

The slope seems to be a positive value which also means that another always improves this as component decreases. Which ensures that perhaps the number of contributors rising as time went by.

So that the above is the right answer.

in the first quarter of the game the Giants gained 5 yards lost 13 yards gained 2 yards gained 6 yards and unfortunately lost 12 yards in their final play

Answers

Answer:

They lost a total of -12 yards.

Step-by-step explanation:

Do the calculation.

5- 13= -8

-8 + 2 + 6= 0

0 - 12 = -12

BRAINLIEST ASAP! LENGTH OF AC?

Answers

Answer:

2.33 units

Step-by-step explanation:

[tex]\tan 25\degree =\frac{AC}{5}\\\\0.46630 = \frac{AC}{5}\\\\AC = 0.46630 \times 5\\AC =2.3315\\AC = 2.33 \: units[/tex]

A data set with a mean of 34 and a standard deviation of 2.5 is normally distributed
According to the Empirical Rule, what percent of the data is in each of the following ranges? Round to the nearest tenth of a percent if necessary.
Between
34 and 39
Less than
31.5
Between
29 and 36.5
Percentage
%
%

Answers

Answer:

a) [tex] z= \frac{34-34}{2.5}= 0[/tex]

[tex] z= \frac{39-34}{2.5}= 2[/tex]

And we want the probability from 0 to two deviations above the mean and we got 95/2 = 47.5 %

b) [tex] P(X<31.5) [/tex]

[tex] z= \frac{31.5-34}{2.5}= -1[/tex]

So one deviation below the mean we have: (100-68)/2 = 16%

c) [tex] z= \frac{29-34}{2.5}= -2[/tex]

[tex] z= \frac{36.5-34}{2.5}= 1[/tex]

For this case below 2 deviation from the mean we have 2.5% and above 1 deviation from the mean we got 16% and then the percentage between -2 and 1 deviation above the mean we got: (100-16-2.5)% = 81.5%

Step-by-step explanation:

For this case we have a random variable with the following parameters:

[tex] X \sim N(\mu = 34, \sigma=2.5)[/tex]

From the empirical rule we know that within one deviation from the mean we have 68% of the values, within two deviations we have 95% and within 3 deviations we have 99.7% of the data.

We want to find the following probability:

[tex] P(34 < X<39)[/tex]

We can find the number of deviation from the mean with the z score formula:

[tex] z= \frac{X -\mu}{\sigma}[/tex]

And replacing we got

[tex] z= \frac{34-34}{2.5}= 0[/tex]

[tex] z= \frac{39-34}{2.5}= 2[/tex]

And we want the probability from 0 to two deviations above the mean and we got 95/2 = 47.5 %

For the second case:

[tex] P(X<31.5) [/tex]

[tex] z= \frac{31.5-34}{2.5}= -1[/tex]

So one deviation below the mean we have: (100-68)/2 = 16%

For the third case:

[tex] P(29 < X<36.5)[/tex]

And replacing we got:

[tex] z= \frac{29-34}{2.5}= -2[/tex]

[tex] z= \frac{36.5-34}{2.5}= 1[/tex]

For this case below 2 deviation from the mean we have 2.5% and above 1 deviation from the mean we got 16% and then the percentage between -2 and 1 deviation above the mean we got: (100-16-2.5)% = 81.5%

What is the slope (m) and y- and y-intercept (b) of the equation y = -4x + 6

Answers

Explanation: Linear equations can be written in the form y = mx + b where the multiplier, m, or the coefficient of the x term represents the slope of the line and the b is your constant term which represents the y-intercept of the line

This linear equation has a slope equal to -4 since it's

the coefficient of the number in front of your variable.

This equation has a y-intercept that is equal to 6 since it's

in the place of the b in the equation y = mx + b.

don't know if my answer is right

Answers

Answer:

168

Step-by-step explanation:

SA= 2B + hp

h=9

p=16

B= 1/2 bh

B= 1/2 6(4)

B=12 x 2 = 24

9 x 16= 144

144+24= 168

BRAINLIEST really needed!!

After 3 minutes, a submarine had descended to −320 feet. After 8 minutes, the submarine had descended to −420 feet. Assuming a linear function, write an equation in the form d(t)=mt+b that shows the depth, d(t), after t minutes.

Answers

Answer:

  d(t) = -20t -260

Step-by-step explanation:

We are given two points ...

  (t, d) = (3, -320) and (8, -420)

The 2-point form of the equation of a line can be useful when 2 points are given.

  y = (y2 -y1)/(x2 -x1)(x -x1) +y1

Substituting the given points, we have ...

  d(t) = (-420 -(-320))/(8 -3)(t -3) -320

  d(t) = -20(t -3) -320

  d(t) = -20t -260

The altitude of an airplane is decreasing at a rate of 44 feet per second. What is the change in altitude of the airplane over a period of 34 seconds?

Answers

Answer:

1320 feet

Step-by-step explanation:

All we have to do is multiply the rate of change of altitude by the time it took the altitude to change.

The altitude of an airplane is decreasing at a rate of 44 feet per second. After 30 seconds, the change is altitude is:

44 * 30 = 1320 feet

The altitude of the airplane has changed by 1320 feet.

Solve this system of equations.

2x + 6y = −6,

4x − 3y = −12


What is the solution to the system of equations?

Answers

Answer:

x = -3 and y = 0

Step-by-step explanation:

It would be more direct to apply elimination in this problem, rather than substitution:

  2x + 6y = -6       ⇒      2x + 6y = -6       ⇒      10x = - 30

+ 2(4x - 3y = -12)        +  8x - 6y = -24

Now let us solve for x through simply algebra:

10x = -30,

  x = -3

Substitute this value of x into the first equation to get the value of y:

2( -3 ) + 6y = -6,

-6 + 6y = -6,

  6y = 0,

    y = 0

Answer:

-3 and 0

Step-by-step explanation:

i hope this helps :)

Determine the number of solutions to a system of equation:
Please help

Answers

Answer:

Step-by-step explanation:

These equations are all written in slope-intercept form, so the question is relatively easy to answer. These rules apply.

if slopes are different: 1 solutionif slopes are the same and y-intercepts are different, 0 solutionsif slopes are the same and y-intercepts are the same, infinitely many

1. y=-6x-2; y=-6x-2 --- infinitely many

2. y=0.5x+5; y=0.5x+1 --- zero

3. y=0.25x-2; y=5x-4 --- one

4. y=2x+3; y=4x-1 --- one

5. y=2x+1.5; y=2x+1.5 --- infinitely many

6. y=-x-3; y=-x+3 --- zero

_____

Slope-intercept form is ...

  y = mx +b

m is the slope

b is the y-intercept

Answer:

Step-by-step explanation: 1. y=-6x-2; y=-6x-2 --- infinitely many

2. y=0.5x+5; y=0.5x+1 --- zero

3. y=0.25x-2; y=5x-4 --- one

4. y=2x+3; y=4x-1 --- one

5. y=2x+1.5; y=2x+1.5 --- infinitely many

6. y=-x-3; y=-x+3 --- zero

AB=
Round your answer to the nearest hundredth.
pleaseee

Answers

Answer:

[tex]c = \frac{2}{0.42} [/tex]

Step-by-step explanation:

AB = c

[tex] \frac{a}{sin \: A} = \frac{c}{sin \: C} \\ \frac{2}{sin \: 25} = \frac{c}{sin \: 90} \\ \frac{2}{0.42} = \frac{c}{1} \\ 0.42 \: c = 2 \\ c = \frac{2}{0.42} [/tex]

Answer:

4.73

Step-by-step explanation:

True or false
Writing a check on an account with insufficient funds is allowed under certain conditions?

Answers

False. A bad check refers to a check that cannot be negotiated because it is drawn on a nonexistent account or one that has insufficient funds. Writing a bad check, also known as a hot check, is illegal. Banks normally charge a fee to anyone who writes a bad check unintentionally.

100 POINTS
PLEASE PROVIDE STEPS
FIND FIRST DERIVATIVE AND SIMPLIFY ANSWER

Answers

Answer:

h'(x) = (-x² ln x + x² + 1) / (x (x² + 1)^(³/₂))

Step-by-step explanation:

h(x) = ln x / √(x² + 1)

You can either use quotient rule, or you can rewrite using negative exponents and use product rule.

h(x) = (ln x) (x² + 1)^(-½)

h'(x) = (ln x) (-½) (x² + 1)^(-³/₂) (2x) + (1/x) (x² + 1)^(-½)

h'(x) = (-x ln x) (x² + 1)^(-³/₂) + (1/x) (x² + 1)^(-½)

h'(x) = (x² + 1)^(-³/₂) (-x ln x + (1/x) (x² + 1))

h'(x) = (1/x) (x² + 1)^(-³/₂) (-x² ln x + x² + 1)

h'(x) = (-x² ln x + x² + 1) / (x (x² + 1)^(³/₂))

Solution:

h(x) = ln(x)/√x^2+1

h(x) = ln(x) * (x^2 + 1)^-1/2

h(x) = ln(x) * (-1/2) * (x^2 + 1)^-3/2 * 2x + 1/x * (x^2 + 1)^-1/2

h(x) = -x ln(x) * (x^2 + 1)^-3/2 + 1/x * (x^2 + 1)^-1/2

h(x) = (x^2 + 1)^-3/2 * (-x ln(x) + 1/x * (x^2 + 1))

h(x) = -x^2ln(x)+x^2+1/(x(x^2+1)^3/2)

Best of Luck!

A 5000​-seat theater has tickets for sale at ​$28 and ​$40. How many tickets should be sold at each price for a sellout performance to generate a total revenue of ​$153 comma 200​?

Answers

Answer:

Let's denote:

x: number of ticket 28$

y: number of ticket 40$

Then, we have:

x + y =5000

28x + 40y = 153200

=> 28(5000 - y) + 40y = 153200

=> 12y = 153200 - 140000

=> 12y =13200

=> y = 1100 (ticket 40$)

=> x = 5000 - 1100 = 3900 (ticket 28$)

Which piecewise function is shown in the graph

Answers

Answer:

The answer is A

Step-by-step explanation:

just did it on edge

BRAINLIST+11 Pts!!!
Jim just found a job with a take-home pay of $950 per month. He must pay $400 for rent and $100 for groceries each month. He also spends $100 per month on transportation. If he budgets $50 each month for clothing, $100 for restaurants and $50 for everything else, how long will it take him to save $1,800?

Answers

Answer:12 months

Step-by-step explanation:

400+400=800 so  950-800=150 1800/150=12


What can be determined by looking at the factored form of the polynomial f(x) = (x + 7)(x - 2) ?
A
The graph of the polynomial has zeros at (0,-7) and (0,2)
В
The graph of the polynomial has zeros at (7,0) and (-2,0)
C
The graph of the polynomial has zeros at (-7,0) and (2,0)
D
The graph of the polynomial has zeros at (0,7) and (0,-2)

Answers

Answer:

C . The graph of the polynomial has zeros at (-7,0) and (2,0)

Step-by-step explanation:

f(x) = (x + 7)(x - 2)

Zero's obtained:

(x+7)(x-2) = 0x+7 = 0 ⇒ x = -7x-2 = 0 ⇒ x = 2

Coordinates:

(-7, 0) and (2, 0)

Correct answer choice is:

C . The graph of the polynomial has zeros at (-7,0) and (2,0)

What is the amplitude of y=3sin⁡(2x−1)+4?

Answers

Answer:

3

Step-by-step explanation:

Amplitude is the number in front of the sin or the number multiplied by the whole equation.  In this case its 3

PLEASE HELP!!! WILL MARK AS BRAINLIEST!!!

A colony of 300 bacteria doubles in size every 22 minutes can be represented by the exponential function y=300(2)x. If you want to know how many bacteria will be present about 66 minutes, what should you plug in for x?

Answers

Answer:

[tex] y = 300 (2)^x[/tex]

Where x represent the number of period of times of 22 minutes. If we want to know the value of the population after 66 minutes we need to find the value of x on this way:

[tex] x = 66 minutes *\frac{1period}{22 minutes}= 3[/tex]

So then we need to replace the value of x =3 and we got:

[tex] y= 300 (2)^3 = 2400[/tex]

Step-by-step explanation:

For this case we have the following function:

[tex] y = 300 (2)^x[/tex]

Where x represent the number of period of times of 22 minutes. If we want to know the value of the population after 66 minutes we need to find the value of x on this way:

[tex] x = 66 minutes *\frac{1period}{22 minutes}= 3[/tex]

So then we need to replace the value of x =3 and we got:

[tex] y= 300 (2)^3 = 2400[/tex]

Given the speeds of each runner below, determine who runs the fastest.

Noah runs 15 feet per second.\text{Noah runs 15 feet per second.}

Noah runs 15 feet per second.

Jake runs 101 feet in 8 seconds.\text{Jake runs 101 feet in 8 seconds.}

Jake runs 101 feet in 8 seconds.

Debbie runs 1 mile in 455 seconds.\text{Debbie runs 1 mile in 455 seconds.}

Debbie runs 1 mile in 455 seconds.

Stephanie runs 869 feet in 1 minute.\text{Stephanie runs 869 feet in 1 minute.}

Stephanie runs 869 feet in 1 minute.

Answers

Answer:

Stephanie runs the fastest.

Step-by-step explanation:

Answer:

noah

Step-by-step explanation:

Giving brainliest for CORRECT awnser.

Answers

Answer:

64

Step-by-step explanation:

x^2 +16x+c

Take the coefficient of x

16

Divide by 2

16/2 =8

Square it

8^2 = 64

This is c

Answer:

c = 64

Step-by-step explanation:

The value for c is A. 64.  That comes from the process of completing the square where you take half the linear term, square it, and add it in.  Our linear term is 16.  Half of 16 is 8, and 8 squared is 64. 

What’s the correct answer for this?

Answers

Answer:

c

Step-by-step explanation:

In the right triangle shown DF=EF=3. How long is DE?

Answers

Answer:

4.24

Step-by-step explanation:

To solve this, use the Pythagorean therom. A^2 + b^2 = C^2

in this case a = 3  and b = 3

so 9 + 9 =  sqrt 18  

4.24

Answer:3√(2)

Step-by-step explanation:

DF=3

EF=3

DE=√(3^2 + 3^2)

DE=√(3x3 + 3x3)

DE=√(9+9)

DE=√(18)

DE=√(2 x 9)

DE=√(2) x √(9)

DE=√(2) x 3

DE=3√(2)

A movie theater decreased the size of its popcorn bags by 20%. If the old bags held 15 cups of popcorn, how much do the new bags hold

Answers

Answer:

Your answer will be [tex]12[/tex] cups of popcorn.

Step-by-step explanation:

To find out how much the new bags hold, you need to find out the discount.

[tex]\frac{20}{100 } = .2[/tex]

[tex]15 * .2 = 3[/tex]

We know that the discount is [tex]3[/tex].

To figure out how much the new bags hold, subtract by the old bags.

[tex]15 - 3 = 12[/tex]

The new bags hold 12 cups of popcorn.

For the functions f(x)=6x−4 and g(x)=2x2+5, find (g∘f)(x).

Answers

Answer:

72x^2-96x+37

Step-by-step explanation:

The moon has a diameter of approximately 2,200 miles. If the circumference of a circle can be found using the formula C = πd, what is the circumference of the moon? (Use 3.14 for π)

Answers

Answer:6908 (miles) ^2

Step-by-step explanation:

diameter=2200 miles

π=3.14

Circumference=π x diameter

Circumference=3.14 x 2200

Circumference=6908 (miles)^2

Answer:

The circumference is 6908 miles.

Step-by-step explanation:

so your answer is B.

How far can a dog run into the woods?

Answers

Answer:

Half way

Step-by-step explanation:

Half way, because the dog can run all the way through the woods, but only half of the time he is going in, the rest of the time he is going out.

A bag contains 3 red marbles and 6 blue marbles. A second bag contains 6 green marbles and 4 yellow marbles. You choose a marble from bag A and then a marble from bag B, what would be the probability of selecting one blue marble and one yellow marble?

Answers

Answer:

4/15

Step-by-step explanation:

Bag A

3 red marbles and 6 blue marbles.  = 9 marbles

P(blue) = blue/total =6/9 = 2/3

Bag B

6 green marbles and 4 yellow marbles.  = 10 marbles

P(yellow) = yellow/total=4/10 = 2/5

P(blue,yellow) = 2/3 * 2/5 = 4/15

what kind of novel is nutshell? ​

Answers

Answer:

i dont know what is it

den

Other Questions
Can someone plz help me with this question In the following sentence, which word is the adjective?I love the clear waters of the Caribbean. click the statement box Hancock Medical Supply Co., earned $90,500 of revenue on account during Year 1, its first year of operation. During Year 1, Hancock collected $71,400 of cash from its receivables accounts. The company did not write-off any uncollectible accounts. It estimates that it will be unable to collect 1% of revenue on account. What is the net realizable value of receivables that will be reported on the balance sheet at December 31, Year 1 How are laws made,who enforces and leads the nation, how are disputes settled Read the excerpt from A Black Hole is NOT a Hole.However, near a black hole, gases and dust and stars encounter its tug. Some things may be hurtling by so fast they won't get pulled into the black hole. Other things may not be as swift. They will be drawn in.Closer and closer, the tugging force gets stronger and stronger. Close enough, the black hole no longer acts like a whirlpool.With a whirlpool, there's always a fast-enough fishor a fast-enough somethingthat moves so quickly it won't be pulled all the way into the center.Not so with a black hole! Within a certain distance the black hole's power is so strong, nothing is fast enough to zip away.What is being compared or contrasted in this excerpt?A. A comparison between the power of a star and the power of a whirlpool is being made.B. A contrast between the power of a star and the power of a whirlpool is being made.C. A comparison between the power of a black hole and the power of a whirlpool is being made.D. A contrast between the power of a black hole and the power of a whirlpool is being made. 1. Which muscles are being used when doing a push-up?A.Pectorals, Deltoid, TricepsB.Hamstrings, Quadriceps, GastrocnemiusC.Glutes, Achilles tendonD.Abdominals, Glutes, Hamstrings Which of these structures are found in plant cells but not animal cells? A. Gogi apparatusB. mitochondriaC. lysosomesD. cell wall Find the value of the variables for each set or similar figures Fourteen subtracted from the product of a number and -3 is 25 Which sentence from Defoe's Robinson Crusoe best illustrates the conceptsfound in the Great Chain of Being? what is the equation for the graph shown below ?? Mrs Andrews had 1 2/8 pizzas left after her pizza party.After giving some to mr.Andrews,she had 6/8 left.What fraction of the pizza did she give to mr.Andrews?Use the fraction models to help you solve the problem. ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? Qu1) Which of the equivalent expressions for P(x) reveals the price which gives a profit ofzero without changing the form of the expression?a)b)P(x) = -3x2 + 432x - 1680P(x) = -3(x - 4)(x - 140)P(x) = -3(x - 72)2 + 13872 what excerpt from the lliad by homer would reference to folklore? Scientists working in southern Mexico have discovered a tomb. The scientists are archaeologists--they study pastcultures. They believe that the tomb could be thousands of years old. They found it accidentally. Digging into theruins of a pyramid, they came across a stone wall. More digging showed that the wall was part of a stone roomcontaining four skeletons. Wooden roof supports had been used to frame the tomb. But the wood had fallendown long ago. The pyramid's weight had been too great.The tomb is___A.perfectB.famousC.ancientD.shallow Given the partial equation: MnO4+ SO32 Mn2++ SO42, balance the reaction in acidic solution using the half-reaction method and fill in the coefficients. The missing blanks represent H2O, H+, or OH-, as required to balance the reaction. Enter the coefficients as integers, using the lowest whole numbers. If the coefficient for something is "1", make sure to type that in and not leave it blank. Enter only the coefficients. a hot liquid located under earth's surface? What was the Reagan administration hoping to achieve by deregulating some American industries?Choose 1 answer:Choose 1 answer:(Choice A)AA greater supply of oil from American wells, which were hampered from reaching their full potential due to environmental regulations(Choice B)BHigher wages for employees as minimum wages were set too low by state governments(Choice C)CIt hoped to lower costs for employers, leading to cheaper consumer goods.