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Anon25 [30]
3 years ago
13

Solve the system using substitution. Show your work. x = -4y + 9 x - y = 4

Mathematics
2 answers:
lesya692 [45]3 years ago
7 0
X = -4y + 9
x - y = 4

- rearrange the second equation to x = 4 + y
- then we can plug it into x for the first equation

4 + y = -4y + 9 — then we solve for y
y = -4y + 5
5y = 5 -> y = 1

we can then plug in 1 (our y value) into the original second equation.

x - 1 = 4 -> x = 5

x = 5 & y = 1
you should put it in a coordinate layout so:
(5,1)

hope this helped !!
FromTheMoon [43]3 years ago
6 0

Answer:

please what should we found? is it the value of ×or y

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See attached picture ​
lions [1.4K]

Answer:

ok i see it

Step-by-step explanation:

4 0
3 years ago
-3x-9=-15 solve for x​
qaws [65]

Answer:x=2

Step-by-step explanation:

-3x-9=-15

-3x=-6

x=2

7 0
3 years ago
Read 2 more answers
Determine whether more or less than the percent budgeted was actually spent.
SSSSS [86.1K]

The amount spent as a percentage of the budget can be found from

... (actual amount)/(total budget) × 100%

... = (actual amount)/3600×100%

... = ((actual amount)/36)%

For housing, this is

... (820/36)% = 22.78% . . . . less than budget for housing

For transportation, this is

... (370/36)% = 10.28% . . . . more than budget for transportation

7 0
3 years ago
In the triangle below, 4/5 represents which ratio?
ASHA 777 [7]
<span><u><em>Answer:</em></u>
sin (C)

<u><em>Explanation:</em></u>
<u>In a right-angled triangle, special trig functions can be applied. These functions are as follows:</u>
sin (theta) = </span>\frac{opposite}{hypotenuse}
<span>
cos (theta) = </span>\frac{adjacent}{hypotenuse}
<span>
tan (theta) = </span>\frac{opposite}{adjacent}<span>

<u>Now, let's check the triangle we have:</u>
<u>We have two options:</u>
<u>First option:</u>
5 is the hypotenuse of the triangle
4 is the side adjacent to angle B
Therefore, we can apply the <u>cos function</u>:
cos (B) = </span>\frac{4}{5}<span>

<u>Second option:</u>
5 is the hypotenuse of the triangle
4 is the side opposite to angle C
Therefore, we can apply the <u>sin function</u>:
sin (C) = </span>\frac{4}{5}
<span>
Among the two options, the second one is the one found in the choices. Therefore, it will be the correct one.

Hope this helps :)

</span>
8 0
3 years ago
Read 2 more answers
Help I need a answer
Gre4nikov [31]

Answer:

C

Step-by-step explanation:

The verticle line on the left is the minimum and is 4 for both

7 0
3 years ago
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