Answer: 9b-4c=2a
Change from addition to subtraction problem to make 2a the answer.
Thirty out of 40 students passed the algebra test in their math class. what percentage of the students didnt pass the test?
Answer: 25%
Step-by-step explanation: 40-30= 10 10/40= .25
Answer: 90%
Step-by-step explanation:
Main and helping words sorry i meant English
not math
Answer:
its in the link
Step-by-step explanation:
Every New Year's Day, Jennifer brings 13 candies for each of her grandchildren and 20 more candies for the adults to share.
Let g represent the number of Jennifer's grandchildren and c represent the total number of candies she brings.
Find the value of c when g=9.
Answer:
We can use the given information to set up a system of two equations:
c = 13g + 20
c - 13g = 20
The second equation is obtained from the first equation by subtracting 13g from both sides.
To solve this system, we can use substitution.
First, we solve the second equation for c.
c = 20 + 13g
Then, we substitute this expression for c into the first equation.
20 + 13g = 13g + 20
Then, we simplify.
20 = 20
So, the value of c when g = 9 is 20 + 13 * 9 = 20 + 117 = 137.
Step-by-step explanation:
The average daily temperature in a city is 55° in May. The average daily temperature in that same city is −3° in December. Which of the following represents the difference in degrees of these average temperatures? |55| − |−3| = 52° |55| + |−3| = 58° 55|−3| = 52° |−55| − |−3| = 58°
Answer:
-3°
Step-by-step explanation:
Explain how the percent equation relates proportional quantities
the percent equation being
PART = PERCENT * WHOLE
Answer: This is the best I could find for you
Step-by-step explanation:
"When the ratio of part to whole is equal to the ratio of a percent to 100, shows a percent equal to an equivalent ratio, we call it a percent proportion. A percentage is a fraction expressed with 100 as the denominator. When two ratios are equal, they are said to be in proportion."
When the ratio of part to whole is equivalent to the ratio of a percent to 100, shows a percent equal to an equivalent ratio, we call it a percent proportion. A percentage is a fraction expressed with 100 as the denominator. When two ratios are equal, they are said to be in proportion.
Hope this helps :)
Select the correct answer.
Each unit on the graph is equal to 1 block. How many blocks does Ben need to walk from his house to reach the supermarket?
A 4 blocks
B 5 blocks
C 7 blocks
D 9 blocks
These are homework questions I don't understand- can I please get help?
WARNING: ANSWER NOT NOT BE RIGHT! Answer: 1- A I really hope this helps! Im not good at this stuff, but I hope I did good! This not be right!
Answer:
1. a. draw 5 boxes with 7ś in them and x=7
2. number 7. x+x+x=9 that is A. and x+3=9 for B.
3. part a: x+9=16 draw a box with x+9=16 and x=7
3. part b: 4(x)=28 draw a bout that matches that and x=7
Step-by-step explanation:
1. the value of x is seven because 5x = 35 divide x on both sides is 7
2. number 7. x+x+x=9 that is A. and x+3=9 for B.
3. part a: x+9=16 draw a box with x+9=16 and x=7
3. part b: 4(x)=28 draw a bout that matches that and x=7
Tell whether ratios form a propotion
1/4; 3/12
54/10; 81/15
18/24; 15/20
someone help me pls:(
Answer: Ratios form a proportion if they are equal when cross-multiplied.
1/4 and 3/12
Cross-multiply these ratios to compare them: 1/4 * 12 = 3, 3/12 * 4 = 3.
So they are equal and form a proportion.
54/10; 81/15
Cross-multiply these ratios to compare them: 54/10 * 15 = 81, 81/15 * 10 = 54.
So they are equal and form a proportion.
18/24; 15/20
Cross-multiply these ratios to compare them: 18/24 * 20 = 15, 15/20 * 24 = 18.
So they are equal and form a proportion.
Hence, all the ratios mentioned above form a proportion.
Step-by-step explanation:
atch
to any like terms in Group 2. Select all that apply.
A.
2.8y
B.
3x
C.
12
D.
2.9y
E. -1.0
0.1
F.1/3x
The like terms to 4/5 in the group 2 are given as follows:
D. -0.1.
F. 12.
What are like terms?Like terms are terms that have the same letter and the same exponent, as thus they can be either added or subtracted to simplify expressions.
The most basic example of like terms are constants, as they can always be added or subtracted.
In group 2, the terms that are constant are the terms -0.1 and 12, hence they are like terms to the fraction 4/5, meaning that the correct options are given by options D and F.
The like terms to -2.1x would be of 3x and also x/3, as they would have the same variable x with exponent 1.
Missing InformationThe problem is given by the image presented at the end of the answer.
More can be learned about like terms at https://brainly.com/question/17471184
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PLEASE HELP! I WILL GIVE BRAINLY ALSO SUMMARIZE!! (if u troll ill report!)
A sports medicine major wanted to conduct an experiment to determine if there is a correlation between the members of the soccer team's leg strength and the time it takes for them to sprint 40 yards. He sets up the following test and records the data:
The time for 22 leg-press reps is 11.9 seconds.
Step-by-step explanation:The lines of best fit is the trend line of the dataset.
The equation of line of best fit is y = 0.120x + 9.274The time for 22 leg-press reps is 11.9 seconds(A) The equation of the line of best fitThe table is given as —
(x) : 12 32 7 26 28 15 1
(y) : 8.6 14.6 7.1 8.3 11.9 19.4 9.5
To determine the equation of line of best fit, we make use of a regression calculator.
Enter the above dataset in a regression calculator, the equation is: y = 0.120x + 9.274 (Approximated to Three Decimal Places / Rounded of to the Thousandths Place)
(B) The number of seconds for 22 leg-press repsThis means that x = 22.
So, we have:
y = 0.120 * 22 + 9.274
= 2.640 + 9.274
= 11.914
(Approximate to the nearest hundredths)
= 11.9
Hence, the time for 22 leg-press reps is 11.9 seconds.
Hope my answer helps you.
:)
Please mark my answer as the BRAINLIEST. Plssssssssssssssssssss
Rita made 4 bowls of fruit salad. She used 0.4 kilograms of melon in all. How many kilograms of melon, on average, were in each bowl?
Answer:
0.1 kilograms of melon in each bowl.
Step-by-step explanation:
[tex]\frac{0.4}{4}[/tex] = 0.1
Answer:
0.1 kilogram of melon are on each bowl
Step-by-step explanation:
[tex]\frac{4}{0.4} = 0.1[/tex]
find rate of change AND initial value
Answer: (1,2) and or (-1.-2)
Step-by-step explanation:
if you look at the graph and go to a point that is on a corner of a square like (0.-4) you count all the squares tell you hit the next point just like the last
A theater sold 85% of the tickets for a
play. If 170 tickets were sold, how many
tickets were originally put up for sale?
Answer:
200 tickets.
Step-by-step explanation:
85% = 85/100 = 0.85
170/0.85 = 200
= 200
Check:
200*0.85 = 170
Answer: hope this helps ♡
200 tickets were originally put up for sale.
Step-by-step explanation:
85% = 170
(we divide 85 and 170 by 85)
1% = 2
(now multiply 1 and 2 by 100)
100% = 200
(double check: 85% from 200 → (85×200) ÷ 100 = 170 ✓)
In baseball, each time a player attempts to hit the ball, it is recorded. The ratio of hits compared to total attempts is their batting average. Each player on the team wants to have the highest batting average to help their team the most. For the season so far, Jana has hit the ball 12 times out of 15 attempts. Tasha has hit the ball 9 times out of 10 attempts. Which player has a ratio that means they have a better batting average?
A:Tasha, because she has the lowest ratio since 0.9 > 0.8
B:Tasha, because she has the highest ratio since 27 over 30 is greater than 24 over 30
C:Jana, because she has the lowest ratio since 0.9 > 0.8
D:Jana, because she has the highest ratio since 27 over 30 is greater than 24 over 30
Answer: A) Tasha, because she has the lowest ratio since 0.9 > 0.8
Step-by-step explanation:
what is the answer to 9/10=8/a+6
Answer: 2.8, hope it helps.
Look at the graph of a function below.
Which set builder notation represents the domain of the function in the graph?
A. {y|−1≤ y ≤ 3}
B. {y|1 ≤ y ≤ 9 }
C. {x|−1 ≤ x ≤ 3}
D. {x|1 ≤ x ≤ 9}
the answer to your question is c
helppp pleaseeeeeeeee fastttttttttttt
pls help me I need the help
Answer: 1/4, 16/3, 3
Is x = 6 a solution to the equation 5(x – 3) = x + 13?
Follow the steps to find out.
Show step by step how you apply the various properties (i.e. properties of equality, distributive property, etc).
1. Simplify both sides. Show your work. (2 points)
Answer: 6 is not a solution
Step-by-step explanation:
5(x – 3) = x + 135(6 - 3) ? 6 + 135(3) ? 1915 ≠ 19ALEKS
(screenshot)
Thanks! : )
Answer:
[tex]\frac{9}{1}[/tex]
Step-by-step explanation:
54÷6=9
--> 9:1
Similar figures review
Answer:
#5 = option a (129.38 miles):
We are told that the cities are 17.25 inches apart, and that 2 inches equal 15 miles. First we have to divide 17.25 inches by 2 we end up with 8.62500 inches (not simplified yet). Next, we just take 8.62500 inches and multiply that with 15, which leaves us with 129.37500 inches. Then we just round that to the nearest hundredth which will give us 129.38 inches which means 129.38 miles as well!
#2 = option a (2.4 inches)
We know that bigger rectangle's length is 16 inch and that smaller rectangle's length is 3.2 inches. We just have to calculate the decrease of the length and we do that by dividing. We have to do 16 inches divided by 3.2 inches which equals 5. (You can double check that by multiplying 3.2 inches by 5 which would equal 16 inches) Now to find the width of the smaller rectangle, we just have to divide the width of the bigger rectangle, which is 12 inches, by 5 which would give us 2.4 inches!
#4 = ?
#6 = option c (7.2cm)
So basically I just did 25cm divided by 10cm which equals 2.5cm. (You can also do 25cm divided by 2.5cm to get 10cm if you want to double check). Then I just did 18cm divided by 2.5 cm which led me to the answer 7.2cm)
#3 = ?
Answer: A
Step-by-step explanation: 17.25/2=8.652
8.652*15=129...
rounded it would be equivalent to answer choice A.
a/5 divided by 3a/10
if a doesnt equal to 0
Answer:
Step-by-step explanation:
format is if let variables a,b,c,d then, a/b is divided by c/d can be represented as (a*d)/(b*c) so, by this we have according to the question:
(a*10)/(5*3a) = 2/3
Julia's service charge at the salon was $72.60. If she added 20% for tip, how much did she pay total for her service at the salon?
well, is just that much plus the 20%, hmmm what's 20% of 72.60 anyway?
[tex]\begin{array}{|c|ll} \cline{1-1} \textit{\textit{\LARGE a}\% of \textit{\LARGE b}}\\ \cline{1-1} \\ \left( \cfrac{\textit{\LARGE a}}{100} \right)\cdot \textit{\LARGE b} \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{20\% of 72.60}}{\left( \cfrac{20}{100} \right)72.60}\implies 14.52~\hfill \underset{total~pay}{\stackrel{72.60~~ + ~~14.52}{\text{\LARGE 87.12}}}[/tex]
Please help with this question
Answer:
-look below!
Step-by-step explanation:
equation: s=3+4 s=sister
process: you would add 3 to 4 which is 7, the age of Raymond’s sister.
Raymond’s sister is 7 years old.
CREATE THE TABLE
a. you bring 200 cookies to a party. Let n represent the number of people at the party and c represent the number of cookies each person receives
b. you work at a restaurant for 20 hours. let r represent your hourly pay rate and p represent the total amount you earn
c. you are going on a 240-mile trip. Let t represent the number of hours driving and s represent the speed of the car
The expression for the following statements are,
a. c = 200/n.
b. p = 20r.
c. s×t = 240.
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
a. From the information given the numerical form of the statement is,
c = 200/n.
b. From the information given the numerical form of the statement is,
p = 20r.
c. From the information given the numerical form of the statement is,
s×t = 240.
learn more about numerical expressions here :
https://brainly.com/question/29199574
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Which point is a solution to the system of linear equations?
y = −x + 4
x − 3y = 12?
A: (0, 3)
B: (1, 2)
C: (6, −2)
D: (4, −4)
Help..? As soon as possible please tysm :>
Answer:
A. The constant ratio of y/x is 12/5
Step-by-step explanation:
The ratio of y to x is constant which is 12/5. Hence option A is the correct option.
What is a constant?
The term "constant" has several meanings in mathematics. When used as a noun, it can have any of the following two meanings: a constant, clearly defined number or another immutable mathematical object.
Given table is
x y
5/6 2
25/6 10
125/6 50
625/6 250
When x = 5/6 and y = 2:
x/y = (5/6)/2 = 5/12
∴y/x = 5/12
When x = 25/6 and y = 10:
x/y = (25/6)/10 = 25/60 = 5/12
∴y/x = 5/12
When x = 125/6 and y = 50:
x/y = (125/6)/50 = 125/300 = 5/12
∴y/x = 5/12
When x = 625/6 and y = 250:
x/y = (625/6)/250 = 625/1800 = 5/12
∴y/x = 5/12
To learn more about ratio, click on the below link:
https://brainly.com/question/5232821
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29 POINTS TO WHOEVER GETS THIS RIGHT
What is the value of the expression below when w=7 and x=5
3w + 10x
Answer:
3 × 7 = 21
10 × 5 = 50
21 + 50 = 71
Therefore, the answer is 71.
Answer:
41
Step-by-step explanation:
Which simplified ratio correctly compares 12 yards to 20 feet?
A. 3:5
B. 5:9
C. 5:3
D. 9:5
Mrs. Mendez held a reading contest in
her third-grade class. The students read
160 books. The girls read 84 books.
What percent of the books did the boys
read?
Answer:
47.5 percent is correct
Step-by-step explanation: