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Jobisdone [24]
3 years ago
5

12) -7x + y=-19 -2x + 3y =-19 Solve by elimination

Mathematics
1 answer:
asambeis [7]3 years ago
5 0

X = 2

Y = -5

Step-by-step explanation:

We will multiply -7x + y=-19 by 3 so we can make the ys identical with the second equation. This way, its easier to eliminate them;

3(-7x + y=-19) =

-21x + 3y = -57

Then we can eliminate the ys by elimination. Be keen with the sign before each value;

-21x + 3y = -57

-

-2x + 3y =-19

=

-19x = - 38

X = -38 / -19

X = 2

We can substitute the value of x in one equation get the value of y;

-7(2) + y = -19

-14 + y = -19

Y = -19 +14

Y = -5

Learn More:

For more on solving equations by elimination check out;

brainly.com/question/11155931

#LearnWithBrainly

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181.93 divided by -11.3
jonny [76]

Answer:

-16.1

Step-by-step explanation:

4 0
2 years ago
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What is the area of the parallelogram?
nevsk [136]
The length of the parallelogram is  3/4 ft less 1/8 ft, or 6/8 ft less 1/8 ft, or 5/8 ft.

The width is 1/2 ft.

Thus, the area is (5/8 ft)(1/2 ft) = (5/16) ft^2
7 0
3 years ago
Solve for f(2)<br><br> f(x)=2x-4<br><br> f(2)=?
Art [367]

Hello Again! ^^

Jace is here:

The answer to this is:

f(-2)=-8

❄ EXPLANATION:

f(-2)=2(-2)-4

F(-2)=-4-4

f(-2)=-8

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And Tell me if the answer is wrong. . .

Good Luck with your Assessment!

#LearnWithBrainly

Answer:

Jace~

4 0
3 years ago
A) 101* (x+12) <br> B)63* (7x-14) <br> C)(2x+3) (x+41)* <br> Please help :)
IceJOKER [234]

Answer:

A. x+12 = 101

      -12     -12

x=89

B. 7x-14 = 63

       +14   +14

7x=77

/7   /7

x=11

C. 2x+3 = x+ 41

    -x  -3   -x  -3

x=38

im a god *0*

4 0
2 years ago
Helpppp meeeee outttttt pleaseeeee ASAPPPP!!!!
Ilya [14]

Answer:

\boxed{\sf sin\ C =\frac{40}{41}}

Step-by-step explanation:

We need to find out the value of sinC using the given triangle . Here we can see that the sides of the triangle are 40 , 41 and 9 .

We know that the ratio of sine is perpendicular to hypontenuse .

\sf\longrightarrow sin\theta =\dfrac{ perpendicular}{hypontenuse}

Here we can see that the side opposite to angle C is 40 , therefore the perpendicular of the triangle is 40. And the side opposite to 90° angle is 41 . So it's the hypontenuse . On using the ratio of sine ,

\sf\longrightarrow sinC =\dfrac{ p}{h}\\\\\sf\longrightarrow sin\ C =\dfrac{AB}{AC}

Substitute the respective values ,

\sf\longrightarrow \boxed{\blue{\sf sin\ C =\dfrac{40}{41}}}

<u>Hence the required answer is 40/41.</u>

6 0
3 years ago
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