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2 years ago

Systems of elimination for 2w-3q=8 3w-7q=7

Mathematics

1 answer:

zlopas [31]2 years ago

8 0

i guess is by multiplying 3by the first equation and multiply 2by the second equation

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Which one is correct A. B. C. D.

timofeeve [1]

I think the correct answer is D

3 0

3 years ago

The elevation E, in meters, above sea level at which the boiling point of a certain liquid is t degrees Celsius is given by the

Anna007 [38]

Answer:

$E(119.5)= 730m$

Step-by-step explanation:

Given

$E(t)= 1200(120-t)+520(120-t)^2$

Required

Determine E(119.5)

$E(t)= 1200(120-t)+520(120-t)^2$

Simply substitute 119.5 for t

$E(119.5)= 1200(120-119.5)+520(120-119.5)^2$

Evaluate the expressions in bracket

$E(119.5)= 1200(0.5)+520(0.5)^2$

Solve 0.5²

$E(119.5)= 1200 * 0.5+520*0.25$

$E(119.5)= 600+130$

$E(119.5)= 730$

Hence;

$E(119.5)= 730m$

5 0

3 years ago

Give an example of an equation with an infinite number of solutions. Then make one change to the equation so that it has no solu

mrs_skeptik [129]

Two equations with infinite solutions would look the exact same. Example:
y=mx+b
y=mx+b
Example 2
y=2x+5
y=2x+5
For an equation with no solution they would have the same slope but different y intercepts. An equation with same slope and same y intercepts would have infinite solutions.

5 0

3 years ago

HELP PICTURE IS SHOWNN

Gnom [1K]

Angle TVU = 1/2 (120 - 12) = 108/2 = 56°

Therefore, the correct answer is D.

7 0

3 years ago

Helppp Plsss Asap!!! Thanks

tester [92]

Answer:

Step-by-step explanation:

The average rate of change is

f(x2) - f(x1)

-----------------

x2-x1

We want to find the change from 1 to 3

f(3) = 8

f(1) = 2

f(3) - f(1) 8-2 6

----------------- = ------------ = ---- = 3

3-1 2 2

4 0

3 years ago