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Semmy [17]
3 years ago
5

Substitution 3x+y=-8, -8x-3y=21 PLEASE HELPP ME<3

Mathematics
1 answer:
vekshin13 years ago
6 0

Answer:x=92

y=−255

Step-by-step explanation:

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Rewrite the equation of the parabola in vertex form.
aleksandrvk [35]
The answer would be y=(x+4)^2-37
5 0
3 years ago
The sides of a triangle are in the ratio of 4:5:7 and its perimeter is 64. Find its sides
mel-nik [20]

Answer:

16,20,28

Step-by-step explanation:

64 /(4+5+7)

64/16= 4

sides of triangle=4×4 :5×4: 7×4

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3 0
3 years ago
Read 2 more answers
Evaluate the following expression using the values given.find 2x2 − 2z4 y2 − x2 z4 if x = −4, y = 3, and z = 2.numerical answers
aleksley [76]
To answer the question above, substitute the values of the variables x, y and z given to the equation.  
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Thus, the numerical answer to the question above is -296. 
7 0
4 years ago
Find the distance, c, between (–3, –4) and (1, 5) on the coordinate plane. Round to the nearest tenth if necessary.
nexus9112 [7]

Answer:

I believe the answer 16

Step-by-step explanation:

All you have to do is count.

8 0
3 years ago
What is the value of y for the line that has a slope of 1 and goes through the points (-4, y) and (-2, 8)?
Pavel [41]

Answer:

y = 6

Step-by-step explanation:

To write the equation of a line, calculate the slope between points (-4,y) and (-2,8). Substitute m = 1 and solve for y.

m = \frac{y_2-y_1}{x_2-x_1}\\\\ 1 = \frac{y-8}{-4--2}\\\\ 1 =\frac{y-8}{-2}\\\\-2=y-8\\\\6=y

6 0
4 years ago
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