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Answer:  approximately 3.57 seconds

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Work Shown:

x = number of seconds

distance = speed*time

250 meters = (70 m/s)*(x seconds)

250 = 70x

70x = 250

x = 250/70

x = 3.57142857142858

x = 3.57

It takes approximately 3.57 seconds for the car to travel 250 meters, when it travels a constant speed of 70 meters per second.

Answer:

There are multiple answers

Step-by-step explanation:

Answer:

3.5 inches

Step-by-step explanation:

create a proportion:

inches / miles = inches / miles

let 'x' = distance in inches

1/4 = x

18    252

18x = 252(1/4)

18x = 63

x = 63 / 18

x = 3.5

Answer:

i believe 1-3-5

Step-by-step explanation:

Answer: the 2nd and 6th

Step-by-step explanation:

i did the test thing

Answer:

7 or 8 miles per hour

Step-by-step explanation:

The rate of current or velocity of current upriver is 4.5 miles per hour.

Velocity is the rate of distance covered per time. Velocity could be average or instantaneous.

For example, if a car drives 50 meters for 10 seconds and it is constant then 50/10 = 5 meters/second will be the velocity.

Let's suppose the velocity or speed of the boat (Velocity in still water ) = V miles/hour

Velocity of current = x miles/hour

Given that,

The boat takes 2 hours to travel 15 miles upriver against the current.

15 miles  in 2 hour

⇒ 7.5 miles/hour

Since it is traveling against the current velocity so

V  - x = 7.5

And V = 12 miles/hour

By substitution,

12 - x = 7.5

x = 12 - 7.5

x = 4.5 miles/hour

Hence "The rate of current or velocity of current upriver is 4.5 miles per hour".

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Answer:

Answer:

Order from Least to Greatest

-33/5 < -3.5 < 3.3 < 3 1/3

Step-by-step explanation:

what is this

Step-by-step explanation:

Option #1 – charges 5% simple interest per year; this is a short-term loan for only 5-years.

Option #2 – charges 7% simple interest per year; this is a short-term loan for only 3-years.

Option #3 – charges 3.2% simple interest per year; there is no time limit on this loan (as a group determine how long you think it will take you to make enough money to be able to pay back the loan with interest)

Option #4 - charges 10% simple interest per year; only lasts 10 months

Option what is this

Answer:

Its option one

Step-by-step explanation:

Because 135,000/5=27000 then x5=135,000

Answer:

-2x + 3

Step-by-step explanation:

Perimeter means to add all the sides of the triangle. Simply combine like terms:

(3x) + (2x - 5) + (-7x + 8)

(3x + 2x - 7x) + (-5 + 8)

(5x - 7x) + (8 - 5)

-2x + 3

-2x + 3 is your answer.

~

Answer:

$16

Step-by-step explanation:

[tex]0.75x = 12\\3x = 48\\x = 16[/tex]

Answer:

5/12

Step-by-step explanation:

Probability of getting either heads or tails of a coin : 1/2

Probability of getting 1,2,3,4, or 6 on a dice: 5/6

Multiply those two probabilities : 1/2 * 5/6 = 5/12

You have a 5 out of 12 chances of getting heads on a coin AND any number but a 5 on a dice.

Hope this helps!

Answer: The area is 5x + 20

Step-by-step explanation:

Add all the numbers up.

7 + 4x - 8 = 3

13 + (x + 8) = (x + 21)

Therefore, your answer is 5x + 20

Let me know if you have any questions!

Answer:

E. HL

Step-by-step explanation:

In the diagram given, it is indicated that both right triangles have an Hypotenuse and one corresponding leg that are congruent to each other.

Therefore, based on the Hyotenuse-Leg (HL) Congruence Theorem, both triangles are congruent.

Answer:

9

Step-by-step explanation:

9 +5 = 14

14 +9 = 23

Given:

The area of the rectangle RSTU = [tex]36x^2+25x-25[/tex]

Length of the rectangle RSTU = [tex]4x+5[/tex]

To find:

The width of the rectangle RSTU.

Step-by-step explanation:

We have,

[tex]36x^2+25x-25[/tex]

Splitting the middle term, we get

[tex]=36x^2+45x-20x-25[/tex]

[tex]=9x(4x+5)-5(4x+5)[/tex]

[tex]=(4x+5)(9x-5)[/tex]

We know that, the area of a rectangle is

[tex]Area=Length \times width[/tex]

Area of rectangle is product of (4x+5) and (9x-5).

Since (4x+5) is the length of the rectangle, therefore, (9x-5) is the width of the rectangle RSTU.

Answer:

Perimeter = 65.12 in

Area = 292.48 in^2

which agrees with the second answer choice

Step-by-step explanation:

The perimeter is going to be the addition of the sides of the rectangle external to the composite figure ( 12 + 16 + 12 = 40) PLUS the length of half of the circumference or radius 8 inches  (which is pi * radius = 3.14 * 8 = 25.12 in)

Then the total perimeter is:

Perimeter = 40 in + 25.12 in = 65.12 in

The are is going to be the area of the rectangle (12 * 16 = 192 square inches) PLUS the area of the semicircle of radius 8 in (pi *radius^2 /2 = 100.48 square inches).

Therefore the total area is:

Area = 192 + 100.48  = 292.48 in^2

Answer:

if you download the app photomath it will help you

Step-by-step explanation:

I promise!

Step-by-step explanation:

x=27 and y= 44

.......................

Answer:

Typist A can type faster

Step-by-step explanation:

Replace the t in w = 50t with any numbers and graph the points you get

You can see that typist A can type 50 words per minute when typist B can only type 40

Answers:

slope = -5

y intercept = 18

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Work Shown:

Solve for y

10x+2y = 36

2(5x+y) = 36

5x+y = 36/2 .... dividing both sides by 2

5x+y = 18

y = 18-5x .... subtract 5x from both sides

y = -5x+18

The last equation is in slope intercept form y = mx+b.

We have m = -5 as the slope and b = 18 as the y intercept.

The slope -5 can be written as -5/1 to indicate "go down 5, go over to the right 1".

Answer:

-15x²y²+3xy

Step-by-step explanation:

((−3x)(y))(5xy−1)

=((−3x)(y))(5xy+−1)

=((−3x)(y))(5xy)+((−3x)(y))(−1)

=−15x²y²+3xy

Answer:

Step-by-step explanation:

Taking the determinant of the matrices we will have;

= 4x(5y) - 2x(3y)

= 20xy - 6xy

= 14xy

Given x = -2 and y = 3

Determinant = 14(-2)(3)

Determinant = -28*3

Determinant = -84

Answer:

45/8

Step-by-step explanation:

Answer:

Both are 77

Step-by-step explanation:

103 + 103 = 206

360 - 206 = 154

154/2 = 77

Answer:

Step-by-step explanation:

-5.25+2.25         - 3

1-0.5                 = 0.5

=-6 =m

y=-6x

3 is the value of k in the Linear equation .

What in mathematics is a linear equation?

An algebraic equation with simply a constant and a first-order (linear) component, such as y=mx+b, where m is the slope and b is the y-intercept, is known as a linear equation.

                                   Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables. Equations with variables of power 1 are referred to be linear equations. One example with only one variable is where ax+b = 0, where a and b are real values and x is the variable.

equation 42 ÷ k = 14

              42/k = 14

                42 = 14 * k

                 k = 42/14

                 k = 3

Learn more about Linear equation

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Answer:

18ft

Step-by-step explanation:

Diameter is double the radius.

36/2=18

Answer:

r = 18 ft

Step-by-step explanation:

The radius is 1/2 of the diameter

r = 1/2 d

r =1/2 ( 36 ft)

r = 18 ft

Answer:  0.00435 If you do it by one.

                0.0087 if you do it by two. And-

                 0.01304 if you do it by three.

              I really hope this helps have a good day :))  (pls make brainliest im trying to each a goal!)

Step-by-step explanation:

Answer:

D 18 percent

Step-by-step explanation:

So a percent s out of a hundred and you have 50 so it is more easy to double everything and make it a hundred

the equation should be 18 is what percent of 100 which is the same thing as 18/100

18 divided by 100 is .18