Answer:
A
Step-by-step explanation:
Maria charges $15 for every 2 hours that she babysits. How much would Maria charge for working for 4 hours
Answer:
$30
Step-by-step explanation:
Multiply 15 by 2 because 4 hours is twice as much as 2 hours.
Answer:
30
Explanation:
Hope it helps!
please help! will mark brainliest
Answer:
I think b sorry if im wrong
Find the Mean, Median, Mode and Range of each series. Mean: 126 ÷ 9 = 14 1) 6 , 12 , 8 , 4 , 16 , 16 , 6 , 16 , 9 93 ÷ 9 2) 13 , 4 , 9 , 13 , 1 40 ÷ 5 3) 5 , 12 , 14 , 20 , 5 4) 20 , 18 , 12 , 2 , 13 , 1 66 ÷ 6 5) 14 , 8 , 20 , 12 , 17 , 14 , 5 Median: 5 , 7 , 8 , 10 , 15 , 17 , 21 , 21 , 22
Answer:
129-14 is 115 than minus 6 than add 12
Step-by-step explanation:
Sean answered 18 of 20 quiz questions correctly. What percent of the quiz questions did Sean answer correctly?
Answer:
90%
Step-by-step explanation:
18 divided by 20 = .9 witch means 90% of 1
Which of the following equations has the same solutions as the equation 3x + 2y = -12? Check all that apply.
Answer:
[tex]B.\ -3x - 2y = 12[/tex]
[tex]C.\ 15x + 10y = -60[/tex]
[tex]E.\ 6x + 4y = -24[/tex]
[tex]F.\ 1.5x + y =-6[/tex]
Step-by-step explanation:
Given
[tex]3x + 2y = -12[/tex]
Required
Determine equations with same solution as [tex]3x + 2y = -12[/tex]
For a solution to have the same solution as [tex]3x + 2y = -12[/tex], the equation must be expressed as [tex]3x + 2y = -12[/tex]
[tex]A.\ 3x - 2y = 12[/tex]
This can not be expressed as [tex]3x + 2y = -12[/tex]
[tex]B.\ -3x - 2y = 12[/tex]
Multiply through by -1
[tex]-1(-3x - 2y) = 12 * -1[/tex]
[tex]3x + 2y = -12[/tex]
This has the same solution as the given equation
[tex]C.\ 15x + 10y = -60[/tex]
Divide through by 5
[tex]\frac{15x}{5} + \frac{10y}{5} = \frac{-60}{5}[/tex]
[tex]3x + 2y = -12[/tex]
This has the same solution as the given equation
[tex]D.\ 6x + 2y = -12[/tex]
Divide through by 2
[tex]\frac{6x}{2} + \frac{2y}{2} = \frac{-12}{2}[/tex]
[tex]3x + y = -6[/tex]
This can not be expressed as [tex]3x + 2y = -12[/tex]
[tex]E.\ 6x + 4y = -24[/tex]
Divide through by 2
[tex]\frac{6x}{2} + \frac{4y}{2} = \frac{-24}{2}[/tex]
[tex]3x + 2y = -12[/tex]
This has the same solution as the given equation
[tex]F.\ 1.5x + y =-6[/tex]
Multiply through by 2
[tex]2*1.5x + 2*y =-6*2[/tex]
[tex]3x + 2y =-12[/tex]
This has the same solution as the given equation
[tex]G.\ x + \frac{2}{3}y = -12[/tex]
Multiply through by 3
[tex]3 * x + 3*\frac{2}{3}y = -12*3[/tex]
[tex]3x + 2y = -36[/tex]
This can not be expressed as [tex]3x + 2y = -12[/tex]
The equations with the same solution as [tex]3x + 2y = -12[/tex] are the ones that we were able to expressed as [tex]3x + 2y = -12[/tex].
And the equations are:
[tex]B.\ -3x - 2y = 12[/tex]
[tex]C.\ 15x + 10y = -60[/tex]
[tex]E.\ 6x + 4y = -24[/tex]
[tex]F.\ 1.5x + y =-6[/tex]
The average a of two numbers c and d is equal to half the sum of c and d.
Answer:
[tex] \frac{c + d}{2} = \frac{c + d}{2} [/tex]
The required average of the two numbers c and d is a = [c + d] / 2.
To determine the average an of two numbers c and d.
What is average?The average of the values is the ratio of the total sum of values to the number of values.
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Since, from the above definition,
Average = sum of the number / total number
We have c and d, two numbers
Now sum = c + d
Total number = 2
Average = [ c + d ] / 2
Thus, the required average of the two numbers c and d is a = [c + d] / 2.
Learn more about average here:
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The ratio of the number of girls to the number of boys was 3 to 7. If 2,520 students were present, how many were girls and how many were boys
Answer: 756: 1764
756 girls and 1,764 boys
Step-by-step explanation:
Girls to boys- 3:7
Total Students: 2,520
Using the information given, you will create an equation.
3x + 7x = 2,520
10x = 2,520
X = 252
Now you plug-in 252 for x in your ratio
X is the the number of people
3(252) : 7(252)
756: 1764
Now when you add these numbers, you get 2,520 which is the total number of students in all. This proves your answer to be correct.
Hope this helps!
The number of girls were in the class is 756 and the number of boys were in the class is 1764.
What is the ratio?The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.
Given that, the ratio of the number of girls to the number of boys was 3 to 7.
2,520 students were present
Now, 3+7 =10
Number of girls =3/10 ×2,520
= 756
So, the number of boys =2520-756
= 1764
Therefore, the number of girls were in the class is 756 and the number of boys were in the class is 1764.
To learn more about the ratio visit:
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PLSSSSS HELPPPPP ASAPPPP
Answer:
wait hold on how much money does she have in total?
Step-by-step explanation:
Answer:
20 < x < 50
Step-by-step explanation:
The least she will buy is 4, so multiply that by 5 to get 20.
The most she will buy is 10, so multiply that by 5 to get 50.
So:
20 < x <50
How would I graph y -1 =-5(x- 2)
Help please I'm crying over this problem I'm so cnfused
Answer:
D
Step-by-step explanation:
Since we start with 10,080 gallons after 0 minutes pass, we see the next point. Luckily, we are given an exact point of a number between 10,080 and 8640. The difference of those two numbers is 1440, and divide that by 2 to get 720. So we drain 720 per hour. HOWEVER, it says "minutes", so we divide 720 by 60 (hour -> minutes) to get 12.
*The reason I divided by 2 was to get the number of gallons after 1 hour passes*
Answer:
D. water is draining at a rate of 12gal/min
hope this helps
Step-by-step explanation:
PLLZZ HELP ASAP 10 POINTS! :( its math and plz do both <3 ):
Answer:
8(x-6) at x=-1 is -56 & 2a² - 2a - 15 at a =13 is 297
Step-by-step explanation:
sub x = -1 into 8(x-6) which becomes 8(-1-6) which is equal to 8 x -7 = -56
Sub a = 13 into 2a²-2a-15 = 2(13²) - 2(13) - 15 = 338 - 26 - 15 = 297
I need help ASAP!
A milk truck delivers 357 dozen gallons of milk to stores in 1 day. Write and solve an equation to find n, the number of gallons of milk the milk truck delivers in 1 day.
Answer:
357÷12
Step-by-step explanation:
You need to figure out how many are in one so you would have to divide it by 12 to get your answer.
look at picture correct answer gets brainlist
Answer:
option C is correct
4 degree polynomial with 4 terms
HELP
Please don’t answer if you don’t know it.
Answer:
d=5
Step-by-step explanation:
Answer: d= 5
Step-by-step explanation:
I did this test on edgunity if you need a step by step I can leave it in the comments below. Good luck
Corrado has 27 books in his room that he has already read. He wants to give them away to his 3 younger siblings. How many books will each of Corrado's siblings receive?
If b represents the number of books each sibling receives, which equation could be used to solve the problem?
Answer:
3b = 27
Step-by-step explanation:
They will each receive 9 books
The average score of all high school students in math and science is 150 with a standard deviation of 25. A random sample of 125 students in a district shows an average score of 158. At 95%, is the difference significant? Follow the five-step one-sample test and write your conclusion.
Answer:
The difference is significative we reject H₀
Step-by-step explanation:
Normal Distribution
Population mean X₁ = 150
Population standard deviation σ = 25
Sample size n = 125
Sample mean X₂ = 158
1.-CI = 95 % significance level α = 5% α = 0,05
From z-table α = 0,05 z(c) = 1,64 ( the test is one-tail test to the right)
2.-Hypothesis Test
Null Hypothesis H₀ X₂ = X₁
Alternative Hypothesis Hₐ X₂ > X₁
3.-To compute z(s)
z(s) = ( X₂ - X₁ ) / σ/√n
z(s) = 8 * 11,14 /25
z(s) = 89,12/25
z(s) = 3,56
4.- Comparing z(s) and z(c)
z(s) > z(c)
Then z(s) is in the rejection region we reject H₀
what percentage of his monthly budget does tyrone spend on car expenses
Answer:
the answer is 13%
Step-by-step explanation:
bhurasi got 85%marks in s.l.c. examination if the total marks was 800,how many marks did she obtain
Answer:
680
Step-by-step explanation:
total percent=85%
total marks=800
obtain marks = total percent % 100 mutiply by total marks
U3LT8
Factor completely
11) 18x2 – 3x -6
I
ULT9
Solve by factoring
12) 2-8n=0
Find C.
Round to the nearest tenth.
90 ft
55 ft
A
В
50 ft
C = [? ]°
YLaw of Cosines: c2 = a+ b2 - 2ab cos C
9514 1404 393
Answer:
29.4°
Step-by-step explanation:
The equation can be rearranged to give C directly.
C = arccos((a^2 +b^2 -c^2)/(2ab))
C = arccos((90^2 +55^2 -50^2)/(2·90·55))
C = arccos(8625/9900) ≈ 29.4002°
C ≈ 29.4°
[tex]\frac{1}{2}b+2\leq -6[/tex]
Answer:
1/2 b ≤-8
Step-by-step explanation:
The base diameter and the height of a cone are both
equal toX units.
Which expression represents the volume of the cone, in
cubic units?
Answer:
1/12πx³
Step-by-step explanation:
Given that :
Base diameter = x
Height, (h) = x
Volume of a cone (V) :
1/3 πr²h
Where r = radius = diameter / 2 = x/2
Hence,
V = 1/3 * π * (x/2)² * x
V = 1/3 * π * x²/4 * x
V = 1/12 * π * x³
V = 1/12πx³
A team of 5 runners competed in a relay race. Each runner had to run 730 yards. How long was the race? (ANSWER IF YOU KNOW AND HOW YOU GOT THE ANSWER)
Answer:
3650 yds
Step-by-step explanation:
Take the length that each person ran and multiply by the number of runners
5 * 730yds
3650 yds
Answer:
length that was ran along = length the first racer runs
= 1×730
= 730 yards
OK THIS IS SUPER EASY FOR YOU BUT NOT ME HELP!!!!!
Answer:
D
Step-by-step explanation:
What is the probability that a point chosen at random will be in the shaded region?
O 17%
O 83%
O 36%
O 6%
tan45÷tan45= 1 then what is the answer
Answer:
What is your question? You just gave a balanced equation.
A spinner with 6 equally sized slices has 1 blue slice, 2 red slices, and 3 yellow slices. The dial is spun and stops on a slice at random. What is the probability that the dial stops on a blue or red slice? Write your answer as a fraction in simplest form.
Answer:
1/2
Step-by-step explanation:
Step one:
given data
sample space
1 blue slice,
2 red slices, and
3 yellow slices
sample size= 1+2+3= 6
Required:
The probability that the dial stops on a blue or red slice
1. The probability that the dial stops on a blue = 1/6
2. The probability that the dial stops on a red= 2/6= 1/3
Hence The probability that the dial stops on a blue or red= 1/6+1/3
= 1+2/6
=3/6
=1/2
Katie bought 4 sweaters that each cost the same amount and 1 skirt that cost $20. the items she bought cost a total of 160$. write an equation to determine each cost of each sweater.
Answer:
160-20=140. 140/4=$35.
Ratio 54:18 and 18:6 equivalent ?
Answer:
Yess
Step-by-step explanation:
54:18 = 54/18 = 3/1 = 3:1
18:6 = 18/6 = 3/1 = 3:1
54:18 = 18:6 = 3:1 = 3:1
Thus, Both 54:18 and 18:6 are equivalent
-TheUnknownScientist
Read the word problem below.
Antonio has a total of 55 marbles. He has 15 green marbles and 12 red marbles. The rest of the marbles are blue. How many blue marbles does he have?
A student solves this problem by writing an equation. Which strategy could help check the student’s answer?
Check that the sum of the final answer, 12, and 15 is 55.
Check that the difference of 55 and the final answer is 12.
Check that the sum of the final answer, 27, and 15 is 55.
Check that the difference of 55 and the final answer is 15.
This is just built different. Thank you so much if you can figure it out!!!!!
Step-by-step explanation:
I dont know how to choose the answer but I will give my own opinion..
total marble=55
green=15
red=12
blue=?
so: 55-12+15
blue=55-27
so blue =28..
sorry if it is wrong
Answer:
A
Step-by-step explanation: