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2 years ago

If x = 8 and y = -3, evaluate the following expression: 20 - 5y + 2x

Mathematics

1 answer:

solniwko [45]2 years ago

8 0

Answer:

Step-by-step explanation:

Given the following question:

$20-5y+2x$
$x=8$
$y=-3$

Substitute and solve using PEMDAS:

$20-5y+2x$
$20-5(-3)+2(8)$
$5\times-3=-15$
$20--15+2(8)$
$2\times8=16$
$20-(-15)+16$
$20--15=35$
$35+16=51$
$=51$

Your answer is "51."

Hope this helps.

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Step-by-step explanation:

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3 years ago

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3 years ago

What are the coordinates of the endpoints of the mid segment of triangle ABC that is parallel to line AB?

MrMuchimi

Answer:

$(4.5,4)$ and $(4.5,6.5)$

Step-by-step explanation:

we have the coordinates

A(2,7),B(2,2),C(7,6)

we know that

The mid segment of triangle ABC that is parallel to line AB is located between the mid point AC and the mid point BC

The formula to calculate the midpoint between two points is equal to

$(\frac{x1+x2}{2},\frac{y1+y2}{2})$

step 1

Find the mid point AC

we have

A(2,7),C(7,6)

substitute in the formula

$(\frac{2+7}{2},\frac{7+6}{2})$

$(4.5,6.5)$

step 2

Find the mid point BC

we have

B(2,2),C(7,6)

substitute in the formula

$(\frac{2+7}{2},\frac{2+6}{2})$

$(4.5,4)$

therefore

The endpoints of the mid segment of triangle ABC that is parallel to line AB are $(4.5,4)$ and $(4.5,6.5)$

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3 years ago

If x = 8 and y = -3, evaluate the following expression: 20 - 5y + 2x​

If x = 8 and y = -3, evaluate the following expression: 20 - 5y + 2x