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Rufina [12.5K]
3 years ago
10

Use elimination to solve the system of equations

Mathematics
1 answer:
Phantasy [73]3 years ago
6 0

Answer:

A (-5,2)

Step-by-step explanation:

5x+y=-23

7x-3y=-41

3×(5x+y)=3×(-23)

15x+3y=-69

<u>+</u><u>7x-3y</u><u>=</u><u>-41</u>

<u>22x</u>=<u>-110</u>

22. 22

x=-5

5x+y=-23

5(-5)+y=-23

-25+y=-23

<u>+25</u><u>.</u> <u>+25</u>

y=2

When using elimination you add both equations together so that one variable cancels out the other. In this situation, y can be the variable. You must get the y-variables to cancel out leaving just the x- variables to solve for.

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WILL GIVE BRAINLIEST
eduard

Answer:

uh thats not really an actual question but k...

Step-by-step explanation:

there are no operations

3 0
3 years ago
Riley is placing the game board shown on his bedroom wall. What area of the wall will the game board cover? Use 3.14 for π and r
Levart [38]

Answer:

The answer is 5 ft squared

Step-by-step explanation:

so you have the find the area of the circle first and you do that by starting with the formula which is

pi r2

the diameter is 2.45 so you divide that by to to get the radius and get 1.25

the you would multiply 1.25 times 1.25 times 3.14, and get 4.91 which rounds to by the nearest whole umber as 5 ft 2.

4 0
4 years ago
The school band is ordering health bars to sell for a fundraiser. The company that sells the bars charges $0.40 per bar plus $20
Pepsi [2]

Answer: They can order from 0 to 449 bars, but no more.

Step-by-step explanation:

Given: The school band is ordering health bars to sell for a fundraiser. The company that sells the bars charges $0.40 per bar plus $20.00 for shipping regardless of the size of the order. The band must spend less than $200.00 on bars for the fundraiser.

The inequality below relates x, the number of bars that could be ordered, with the shipping costs and their spending requirements.

0.40x+20

To solve for x,  subtract 20 on both sides, we get

0.40x

Divide 0.40 on both sides, we get

x......... → the number of  bars that could be ordered, with the shipping costs and their spending requirements must less than 450.

Thus, they can order from 0 to 449 bars, but no more.

4 0
4 years ago
Read 2 more answers
How do you solve 224/7 using distributive property?
Nadusha1986 [10]
I think the solution you are looking for is this :

224\quad =\quad 7\cdot 32\\ \\ \frac { 224 }{ 7 } =\frac { 7\cdot 32 }{ 7 } \\ \\ \frac { 7\cdot 32 }{ 7 } =\quad \frac { 7 }{ 7 } \cdot 32\quad =\quad 1\cdot 32=\quad 32
4 0
4 years ago
Read 2 more answers
Can you guys distribute this problem and then figure out how many solutions does this problem have 5(m-3)=7m-17
Cloud [144]
                         5 (m - 3)  =  7m - 17

Eliminate
parentheses:        5m - 15  =  7m - 17

Subtract 5m
from each side:          - 15  =  2m - 17

Add 17
to each side:                  2  =  2m

Divide
each side
by  2 :                            1  =  m  

No more solutions.
Only one.

6 0
4 years ago
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