Answer:
15 meters per secondStep-by-step explanation:
aver speed = distance / time
= 600 meters
40 seconds
= 15 meters per second
(7 points) Simplify to create an equivalent expression.{-4(z+3)-4(5-4z)
Answer : 12z - 32
Explaination:
Uhhh yeah math?
A pet shelter maintains a ratio of 5 cats to 8 dogs. If there are 117 total animals in the shelter, how many are dogs? Set up and solve a proportion.
What integer values satisfy both inequalities?
−1 < x ≤ 2
−2 ≤ x < 3
Answer:
0, 1 and 2
Step-by-step explanation:
- 1 < x ≤ 2
has solutions x = 0, 1, 2
- 2 ≤ x < 3
has solutions x = - 2, - 1, 0, 1, 2
Thus the values of x that satisfy both are x = 0, 1, 2
Inequalities are used to represent unequal expressions.
The integer values satisfy both inequalities are 0, 1 and 2
The inequalities are given as:
[tex]\mathbf{-1 < x \le 2}[/tex] and [tex]\mathbf{-2 \le x < 3}[/tex]
First, we list out the elements of both inequalities
[tex]\mathbf{-1 < x \le 2}[/tex]
[tex]\mathbf{x = 0,1,2}[/tex]
[tex]\mathbf{-2 \le x < 3}[/tex]
[tex]\mathbf{x = -2 ,-1, 0, 1,2}[/tex]
0, 1 and 2 are common integers between both inequalities
Hence, the integer values satisfy both inequalities are 0, 1 and 2
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r−5r−6s+8s−15 what is the answer for this equation
Step-by-step explanation:
r-5r-6s+8s-15
-4r+2s-15
= 2s-4r-15
The simplified form of the given expression is -4r+2s-15.
The given expression is r-5r-6s+8s-15.
What is an expression?An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.
The given expression can be solved as follows:
r-5r-6s+8s-15
= -4r+2s-15
Therefore, the simplified form of the given expression is -4r+2s-15.
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Select all intervals in which the function P(t) is decreasing
Answer:
we conclude that the intervals in which the function P(t) is decreasing are:
x < 13 < x < 4Step-by-step explanation:
At x< 1, the function P(t) is decreasing
A function p is an increasing function on an open interval if f(y) > f(x) for any two input values x and y in the given interval where y>xA function p is a decreasing function on an open interval if f(y) > f(x) for any two input values x and y in the given interval where y>xFrom the figure, it is clear that the function seems to be increasing
from (1, 3) and then 4 to onwards.
But it is clear that the function seems to be decreasing from the x < 1 and from the interval (3, 4).
Therefore, we conclude that the intervals in which the function P(t) is decreasing are:
x < 13 < x < 4Brendan just became a personal trainer and is finalizing his pricing plans. One plan is to charge $50 for the initial consultation and then $60 per session. Another plan is to charge $100 for the consultation and $50 per session. Brendan realizes that the two plans have the same cost for a certain number of sessions. After how many sessions will the pricing be the same?
Answer:
1700
Step-by-step explanation:
If (he)={(0,1),(2,3),(-4,1)}, find h^-1(x)
The given function is
[tex]h(x) = \{ (0,1), (2,3), (-4, 1) \}[/tex]
The inverse function is
[tex]h^{-1}(x) = \{ (1,0), (3,2), (1,-4)\}[/tex]
To get the inverse, we swap each x and y coordinate.
The rule is [tex](x,y) \to (y,x)[/tex]
So that's why the point (0,1) becomes (1,0) for instance.
The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is 4959 miles, with a standard deviation of 448.If he is correct, what is the probability that the mean of a sample of 43 cars would differ from the population mean by less than111 miles? Round your answer to four decimal places.
Answer:
0.8958
Step-by-step explanation:
Given that:
The mean [tex]\mu[/tex] = 4959
The standard deviation [tex]\sigma[/tex] = 448
The sample size n = 43
[tex]\mu_{\overline x} = \mu = 4959[/tex]
[tex]\sigma __{\overline x}} = \dfrac{\sigma}{\sqrt{n}}= \dfrac{448}{\sqrt{43}}[/tex]
By applying the central limit theorem;
[tex]\overline X \sim N \bigg( \mu_{\overline x} = 4959 , \sigma_{\overline x} = \dfrac{448}{\sqrt{43}}\bigg )[/tex]
The purpose of this question is to calculate the probability that the mean of a sample of 43 cars would differ from the population mean by less than111 miles.
This implies that;
[tex]P( |\mu-\overline x| <111) = p( 4959-111 < \overline X < 4959 +111)[/tex]
[tex]= P( 4848 < \overline X < 5070)[/tex]
[tex]= P \bigg ( \dfrac{ \overline x - \mu_x }{ \dfrac{\sigma}{\sqrt{n}}} < Z < \dfrac{ \overline x - \mu_x }{ \dfrac{\sigma}{\sqrt{n}}} \bigg )[/tex]
[tex]= P \bigg ( \dfrac{4848 -4959 }{ \dfrac{448}{\sqrt{43}}} < Z < \dfrac{5070 -4959 }{ \dfrac{448}{\sqrt{43}}} \bigg )[/tex]
[tex]= P \bigg ( \dfrac{-111 }{ 68.319} < Z < \dfrac{111 }{68.319} \bigg )[/tex]
[tex]= P ( -1.6247< Z < 1.6247 )[/tex]
= P ( Z < 1.627 ) - P(Z < -1.627)
From the standard normal tables
= 0.94791 -0.05208
= 0.89583
≅ 0.8958 to four decimal places.
Given: a mod 7 = 5 and b mod 7 = 6 Find (a + b)mod 7. Do not use specific numbers for a and b. Consider a, b as generic particulars. Show steps but you do not need to provide reasons.(7 points)
Answer:
wouldn't it be 77
Step-by-step explanation:
If 7 = 5 is a and 7 = 6 is b and you add them you will get 11 then multiply it by 7 which would give you 77
or If you add 7 + 7 = 14 multiply 11
Or the answer is 154
Mario has $15. He spends $6.25 on admission to the ice skating rink. How much money does he
have left?
Answer:
$8.75 is the answer hope this helps
boys:total students = 2:9, girls = 21, boys =
Answer:
6 boys
Step-by-step explanation:
Subtract to find the total number of girls.
9 - 2 = 7 girls
Write a ratio from boys to girls.
2:7
Divide to find the scale factor.
21 / 7 = 3
Multiply to find the total number of boys.
3 * 2 = 6
Best of Luck!
There are 24 students in the class. They had the choice to buy supplies from two different stores, Store A and B. Each of them bought 2 binders and 5 notebooks. The students have a total of $420 to spend.
Answer:
Step-by-step explanation:
There's 24 students so I would do 5 × 24 which equals 120 so 420 - 120 is 300. Then 2 × 24 is 48. Now 300-48 is 252. They would have $252 left.
There are 210 calories in a 12 ounce drink if Katie drinks 5 ounces how many calories did she drink
Answer:
she drank a total of 87.5 calories
Step-by-step explanation:
you divide 210 by 12, and multiply by 5! :)
Answer:
87.5
Step-by-step explanation:
calories per oz is 210/12=17.5 then 5x17.5=87.5
What is 166.15801966 rounded
Sally has the following spinner for a game. Is this a fair spinner?
A)
No, there are more red and yellow regions than purple and blue regions.
B)
No, the yellow and red regions are too small.
Yes, all the colors have equal region sizes.
Help please
D)
There is not enough information to tell
Answer:
A
Step-by-step explanation:
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match each linear model to its inverse.
Answer:
4x + 3y = 6 is: y = 3/4x - 3/2
3x + 4y = -6 is: y = 4/3x - 2
3x - 4y = 6 is: y = 4/3x + 2
4x - 3y = -6 is: -3/4x - 3/2
Hope this helps! :)
The correct matches are,
4x + 3y = 6 is: y = 3/4x - 3/2
3x + 4y = -6 is: y = 4/3x - 2
3x - 4y = 6 is: y = 4/3x + 2
4x - 3y = -6 is: y=-3/4x - 3/2
We have given that,
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
What is the linear model?
The term linear model is used in different ways according to the context. The most common occurrence is in connection with regression models and the term is often taken as synonymous with a linear regression model.
Match each linear model to its inverse.
Therefore the correct matches
4x + 3y = 6 is: y = 3/4x - 3/2
3x + 4y = -6 is: y = 4/3x - 2
3x - 4y = 6 is: y = 4/3x + 2
4x - 3y = -6 is: y=-3/4x - 3/2
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Which expression could be used to represent the following situation? A hiker is moving down a mountain 24 feet every
hour for 3 hours
A 3 x 24
B- 3 x 24
C-24 x 3
D-24 x -3
Answer:
A
Step-by-step explanation:
Find the distance between the two numbers on a number line −7,−323
Answer:
-316
Step-by-step explanation:
...................
IM BEING TIMED PLEASE HELP
Which of the 5 point problems are you solving?
A
B
C
Answer:
B. x = 7
Y = 3
Step-by-step explanation:
Sorry Guys, Angle 12 & 10 are effectively corresponding angles, but angle 10 & 7 are alternate interior angles. Anyways, Angle 12 & 10 are congruent and 10 & 7 are congruent. At the end, the three angles 12, 10, and 7 have the same measure. If we put it otherwise, the line B is intersecting line D which form right angles equals to 90 degrees, so angle 12 = 90, and the same happens with angle 10 and 7, so the three angles are congruent, but at the same time, angle 7 is supplementary with angle 12 because their sum is equal to 180, (90 + 90 = 180). If you think from different angles is hard to choose the right answer, so what I guess is that we don't need to take into account the angle 10, just the fact that line A intersect line C, and Line B intersect line D forming right angles, and that angle 7 and 12 are right angles which sum equals 180, therefore, we could say that they are supplementary angles, but also congruent because they measure the same, so at the end, I don't know what answer to choose. Both seems correct to me.
Answer:
d
Step-by-step explanation:Angle 12 & 10 are effectively corresponding angles, but angle 10 & 7 are alternate interior angles. Anyways, Angle 12 & 10 are congruent and 10 & 7 are congruent. At the end, the three angles 12, 10, and 7 have the same measure. If we put it otherwise, the line B is intersecting line D which form right angles equals to 90 degrees, so angle 12 = 90, and the same happens with angle 10 and 7, so the three angles are congruent, but at the same time, angle 7 is supplementary with angle 12 because their sum is equal to 180, (90 + 90 = 180). If you think from different angles is hard to choose the right answer, so what I guess is that we don't need to take into account the angle 10, just the fact that line A intersect line C, and Line B intersect line D forming right angles, and that angle 7 and 12 are right angles which sum equals 180, therefore, we could say that they are supplementary angles, but also congruent because they measure the same, so at the end,
find the slope of the line that passes through (6,4) and (2,5)
Answer:
-1/4
Step-by-step explanation:
you do change in y over change in x which is 4-5 over 6-2
when you do the calculations you get -1/4
Is is 24, 15, 23 or 33
Answer:
33
Step-by-step explanation:
In a sixth grade class the ratio of boys to girls is 4:3 if there are 35 students in the class how many girls are there
Answer:
The given ratio is 3:4 this means there are 7 people in each unit of this ratio.
It is stated that there are 35 students in total . That would mean that there are
5 Total sets of students in this class . When we multiply the numbers in our starting ratio by this multiple of 5 , our ratio now becomes 15 : 20
15 and 20 do indeed add up to 35 … But , our question wants to know how many more GIRLS are in the class . Boys were calculated to be 15 in number .
Girls were calculated to be 20 in number .
We now know there were 5 more girls than boys in that class ..
5 is your answer .
1.3K views
Vivek Sharma
Answered January 9, 2020
total number of student in class=35
let the number of boys be 3x
let the number of girls be 4x
so therefore 3x+4x=35 =>7x=35 =>x=5
so therefore number of boys in class is 3x=>3(5)=15
and number of girls in class is 4x=>4(5)=20
so there are 20–15=5 more girls in class than boys.
5.3K viewsView 1 Upvoter
Ashis Ghosh, former Retired officer at State Bank of India
Answered April 8, 2019 · Author has 4.4K answers and 931.6K answer views
Let the number boys in the class be b. So b/(35-b)=3:4, or 105-3b=4b, or 7b=105, or b=15. The number of girls in the class is 35-15=20 20-15=5
Ans: there are 5 more girls than the number of boys in the class.
576 viewsView 1 Upvoter
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Sandy Singh
Answered October 27, 2020 · Author has 460 answers and 35.3K answer views
Boys to girls
= 3:4
girls are 4/7
Number of girls
= 4/7*35/1
= 20 girls
class of 35 girls are 20 then boys will be 15 which makes there are 5 more girls than boys
15 views
Wilfred Lalonde, Project Manager (1991-present)
Answered September 20, 2019
5
274 viewsView 1 Upvoter
Maruprolu Venkata Subbareddy
Answered October 11, 2020
Given that,
Total students =35,
Given ratio=3:4,
3+4=7 parts,
7parts=35
1part=?
35/7=5
Diff b/w boys and girls part=1
So ans 5.
33 views
Bruce Conner, former Director of Business Development (Retired) at A Fortune 500 Company (1980-2016)
Answered June 20, 2019 · Author has 471 answers and 198K answer views
5. 3+4=7
35/7=5
5*3 =15 boys
5*4=20 girls
20–15 =5
371 views
Diana Eade
Answered December 2, 2019
5
Add 4+5 =7
35÷7=5
4×5=20 girls
3×5=15 boys
20-15=5 more girls than boys.
236 views
Hungenahalli Sitaramarao Badarinath, Ph.D. in Civil Engineering. Maths keeps one mentally active.
Answered July 14, 2018 · Author has 28.8K answers and 15.5M answer views
The difference of girls to boys = 35(4–3)/(4+3) = 5.
699 views
Hemant Jaishi
Answered May 8, 2020
five more girls are there in the class.
50 views
David Ong
Answered May 10, 2020
15 Boys, 20 Girls (Ratio 3:4)
Answer: 5.
54 views
Lorine Birir, Admin
Answered January 12, 2020
15 boys and 20 girls this 5 more girls than boys
52 views
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Related Questions
The ratio of boys to girls in a class is 3:2, if there are 12 girls, how many boys are there?
Step-by-step explanation:
538 = ? hundred + ? tens + ? ones
What is the answer?
(I am doing this cause my friend won't stop saying that 8 is in the tens
Answer:
500 (or 5) is in the hundreds place, 30 (or 3) is in the tens place, and 8 is in the ones place.
Step-by-step explanation:
500 is five-hundred, 30 is a ten (10, 20, 30, 40...), and 8 is a one because it is a single digit number and no other numbers come before it, unless it is a decimal.
Can y’all answer the middle one Ill mark you brainlist.
Answer:
4.44 infinet
Step-by-step explanation:
If you are asking and need to round it up it will come up to
4.444
You need to round it up because the 4.444 goes on and on infinitely.
If you needed another answer comment what it is you need and I will answer you on there.
YW
2/5 times 2/3 (28 points)
Answer:
4/15
Step-by-step explanation:
Answer:
2/5 * 2/3= 4/15, cannot be simplified.
Step-by-step explanation:
Multiply the numerators, 2*2
Denominators 5*3
What is the answer please?
Hi I'm struggling with this equation 1/2 * (- 4 + 12) + 3(1/3 * x + 6) = 3/4 * (- 16x + 8) and need help
Answer:
im not sour if this is what you want but i got 1.3 repeating
Step-by-step explanation:
u simplify in ur head
Solve two sevenths plus seven fourteenths
Answer:
Eleven Fourteenths
Step-by-step explanation:
Convert 2/7 into 4/14 to get a common denominator then add 4 and 7 to get 11/14
Answer:
c
Step-by-step explanation:
i took the test
I could really use some help on this problem. I will mark brainliest for the best answer!
Answer:
x2+2x+4
Step-by-step explanation:
(x-2)(x2x+4)
x-2
