Solve the system by substitution.
1. y= 7x
x − 7y = -48
Screen Shot of answer
source:Mathwa.y
Answer:
x=1
y=7
Explaination:
y=7x---------(1)* *First equation
x-7y=(-48)----(2)* *Second equation
Put (1)* into y on (2)*
x-7(7x)=(-48)
x-49x=(-48)
-48x=(-48)
48=48x
48÷48=x
1=x or x=1--------(3)* *Third equation
Put (3)* into (1)*
y=7(1)
y=7
feel free to ask me
Cynthia's older cousin sold her his collection of Pokemon cards. She paid him $9.50 and he charged her $0.10 per card. How many Pokemon cards did she buy?
Answer:
95$
Step-by-step explanation:
The solid figure is separated along the dotted line into two rectangular prisms.
What are the volumes of the two rectangular prisms?
What is the volume of the solid figure?
Use the drop-down menus to show your answer.
The volume of two rectangular prisms are
(put the answer)
cubic inches and 128 cubic inches. The volume of the solid figure is
(put the answer)
cubic inches.
Answer:
its b easy dubs
Step-by-step explanation:
PLEASE HELP NO LINKS OKAY!!
Find area of square
Pls help
Answer:
49/64 yd²
Step-by-step explanation:
since where finding a square we do
A = bxh
A = 7/8×7/8
A = 49/64
What is the fourth term of (d + 4b)3?
Answer:
The answer is in the screen shot. You're welcome
Step-by-step explanation:
18x2 = 2x18 is the associative property?
Answer:
yes
Step-by-step explanation:
the product does not change
Answer:
yes
Step-by-step explanation:
the difference is same, since the product can't change
Gary's parents want him to attend The University of Houston. They opened a college savings account 15 years ago. Today, average yearly tuition and fees for one year at the university are about $10,350. Based on this information, about how much should Gary's parents have saved each of the 15 years to cover the cost of 4 years at The University of Houston?
Answer:
Results are below.
Step-by-step explanation:
Giving the following information:
Today, average yearly tuition and fees for one year at the university are about $10,350.
I will assume a yearly interest rate of 8%.
First, we need to calculate the total amount needed:
Future value (FV)= 10,350*4= $41,400
Now, using the following formula, the annual deposit required:
FV= {A*[(1+i)^n-1]}/i
A= annual deposit
Isolating A:
A= (FV*i)/{[(1+i)^n]-1}
A= (41,400*0.08) / [(1.08^15) - 1]
A= $7,194.22
Please help me please
Answer:
2x+8x+6
Step-by-step explanation:
PLZS ANSWER I NEED HELP
Answer:
107
Step-by-step explanation:
the line is an 180 degree angle so it would be 180-73 which equals to 107! :)
have a good day!!
Answer:
107
Step-by-step explanation:
I think bc
the entire thing is 180 degrees and then just do 180 - 73
sry if its wrong
If the diameter of a penny is 19.05 mm on each penny is 1.52 mm thick, what is the approximate volume of the roll of the roll of pennies? Use 3.14 for pie and round your answer to the nearest tenth.
Answer:433.0mm3
Step-by-step explana
I am confused please help. don’t use me for points.
Answer:
1. 17.2
2. 113
Step-by-step explanation:
the median of a data set is 100 which statement about the data set must be true? A. the data set has an average of 100 B. Half the data values are greater than 100 C.The minimum value is 80 and the maximum value is 120 D. Only one of data points in the data points in the data has a value of 120
Answer:
B
Step-by-step explanation:
The median value is in the middle.
what 2 numbers have a product of -36 and a sum of 9
Answer: -3 and 12
Step-by-step explanation: -3+12=9 and -3(12)=-36
Evaluate the expression for K=-16,m=-22,and n=-23.k+m+n
Answer:
-16-22-23= -61
Step-by-step explanation:
Hope it was helpful .
HELP ASAP!!! THE BEST ANSWER GETS BRAINLIST! (15 POINTS)
(07.05A HC)
The following table shows the values of y for different values of x:
x y
0 -5
1 0
2 5
Which statement best explains whether the table represents a linear function or a nonlinear function?
It represents a linear function because its points are on a straight line.
It represents a linear function because its points are not on a straight line.
It represents a nonlinear function because its points are on a straight line.
It represents a nonlinear function because its points are not on a straight line.
Help mee on this part I’m stuck on this problem and I’m confused
Answer:
point D = (2, -4)
Step-by-step explanation:
It's asking the dot's location.
pls help immediately! this is due in 3 mins :/. (pls don’t give a link, i’ll give brainiest for the correct answer just pls help!)
Answer:
50 i think but i'm not 100 % sure i'm sorry
Step-by-step explanation:
QUICK!!! ASAP!! BRAINLIST GETS 10 POINTS!! PLEASE I NEED THIS QUICK!
What is the initial value of the function represented by this graph?
A coordinate grid is shown with x and y axes labeled from 0 to 7 at increments of 1. A straight line joins the ordered pair 0, 1 with the ordered pair 6, 7.
1
5
6
7
Answer:
y = f(x)
Initial value will be the first point: (0,1) = 1
Step-by-step explanation:
Anna, Boris, and Clara thought of 1 number each Ana's number increased by 20 is 21 greater than boris's number decreased by 22. Boris's number decreased by 20 is 21 greater than claras number increased by 22. How much less is claras number than annas number?
Answer:
Clara's number is 42 less than Anna's number
Step-by-step explanation:
We can start this problem out by setting our variables up:
A= Anna's number
B= Boris's number
C= Clara's number
so we can use them to build our equations. We can sepparate the problem into little more understandable pieces of information, let's start with the first piece of information:
- "Ana's number increased by 20"
A+20
- "boris's number decreased by 22"
B-22
- "21 greater than boris's number decreased by 22."
(B-22)+21
- "Ana's number increased by 20 is 21 greater than boris's number decreased by 22."
A+20=(B-22)+21
This is our first important equation here. Let's go with the second part of the problem:
- "Boris's number decreased by 20"
B-20
- "claras number increased by 22"
C+22
- "21 greater than claras number increased by 22"
(C+22)+21
Now the whole thing:
"Boris's number decreased by 20 is 21 greater than claras number increased by 22."
B-20=(C+22)+21
This is our second important equation.
So now we have the following system of equations:
A+20=(B-22)+21
B-20=(C+22)+21
We can now simplify the equations by combining like terms so we get:
Equation 1:
A+20=(B-22)+21
we can get rid of the parenthesis so we get:
A+20=B-22+21
We can subtract a 20 from both sides of the equation so we get:
A=B-22+21-20
We perform the subtractions so we get:
A=B-21
Equation 2:
B-20=(C+22)+21
We get rid of the parenthesis:
B-20=C+22+21
We add a 20 to both sides so we get:
B=C+22+21+20
We can now perform the additions so we get:
B=C+63
And now we can combine the equations. In this case we can substitute equation 2 into equation 1 to get:
A=C+63-21
We combine like terms to get:
A=C+42
We can subtract 42 from both sides to get:
C=A-42
which reads:
Clara's number is 42 less than Anna's number.
Given the equation of a line y = 10x, create a scatter plot of data points that would fit the provided line of best fit. Include a description of the variables in the scatter plot.
Answer:
10xline y =46
Step-by-step explanation:
this is what i got dont thank me im not the best at math
Need asap please just for number 9 please please help wyetwywywywyw
the answer is 2x^2 + 8x + 6
Answer:
2x²+8x+6
Step-by-step explanation:
please like my answer
Could somebody PLZZZZ help me. Correct answers get brainly
1. 6x+11=21
Solution: Explination:
2. 4x+17=23
Solution: Explination:
Answer:
1)x=1 2/3
2)x=1.5
Step-by-step explanation:
1)6x=21-11
6x=10
x=10/6=1 2/3
2) 4x=23-17
4x=6
x=6/4= 1 1/2
15+n=-9 answer first and u will be the top one .
Answer:
[tex]n=-24[/tex]
Step-by-step explanation:
[tex]15+n=-9[/tex]
Simplify both sides:
[tex]n+15=-9[/tex]
Subtract 15 from both sides:
[tex]n+15-15=-9-15\\n=-24[/tex]
n = -24 is your final answer!
Step-by-step explanation:
15+n=-9
n=-9-15
n=-24
=-24
Use either point Bor point Cto find the lengths of the
legs and hypotenuse of a right triangle. Input the
lengths. Then click done.
PLS ANSWER QUICKLY MY CLASS SOON!!!
Answer:
y=10
Step-by-step explanation:
y=|x-5|+|x+5|, if -5<x<5
y=10
i REALLY need answers, like if you see this PLEASE answer it
Leslie rolls two fair number cubes numbered from 1 to 6. She first defines the sample space, as shown below:
(1, 1), (1, 2), (1, 3), (1, 4), (1, 5), (1, 6)
(2, 1), (2, 2), (2, 3), (2, 4), (2, 5), (2, 6)
(3, 1), (3, 2), (3, 3), (3, 4), (3, 5), (3, 6)
(4, 1), (4, 2), (4, 3), (4, 4), (4, 5), (4, 6)
(5, 1), (5, 2), (5, 3), (5, 4), (5, 5), (5, 6)
(6, 1), (6, 2), (6, 3), (6, 4), (6, 5), (6, 6)
Based on the sample space, what is the probability of getting a total of 11? (5 points)
2 over 36
3 over 36
4 over 36
5 over 36
Answer:
67
Step-by-step explanation:
Answer:
2 over 36
Step-by-step explanation:
The only way to get an 11 is with a 5 and a 6 so the probability of rolling a sum of 11 is:
(2/6)(1/6)=2/36
please help me figure this out!!