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3 years ago

36x - 8y2 when x=3 an y= -6

Mathematics

1 answer:

Alex17521 [72]3 years ago

7 0

Hey there!

First off, I’m going to assume that the 2 in the second term is an exponent. If it isn’t, let me know and I’ll fix the answer.

Anyways, let’s start by plugging the values for the variables into the equation.

36(3)-8(-6)^2

Square -6

108-8(36)

Multiply.

108-288

Subtract.

-180

Your answer is -180.

Hope this helps!

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Multiply. <br> 8 1/2 -2 2/3

MrRissso [65]

Answer: $-\frac{68}{3}$ or $-22\ 2/3$

Step-by-step explanation:

To solve this problem you must:

- Convert the mixed numbers to fractions, as following:

$8\ 1/2=\frac{((8*2)+1)}{2}=\frac{17}{2}$

$2\ 2/3=\frac{((3(2)+2)}{3}=\frac{8}{3}$

- Multiply both fractions. Mutilply the numerators and the denominators:

$(\frac{17}{2})(-\frac{8}{3})=-\frac{136}{6}$

- Simplify. Therefore, you obtain that the answer is:

$-\frac{68}{3}$ or $-22\ 2/3$

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2 years ago

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Draw a rectangle that is 3 squares long and 1/2 of a square wide. Then add up the partial squares to find the area. Multiply to

nataly862011 [7]

Answer:

3/2 or 1 1/2 squares.

Step-by-step explanation:

It says it on the image attached. Also, it's what you get when you multiply

$3*\frac{1}{2}$ .

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2 years ago

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3. The sum of a number of 2 digits and of the number formed by reversing the digits is 110, and the difference of the digits is

VladimirAG [237]

Answer:

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3 years ago

Determine which lines in the diagram are parallel. A) a || b B) b || c C) a || c D) b || d

spayn [35]

Line a and line c are parallel lines that are given as a || c. Then the correct option is C.

<h3>How are parallel straight lines related?</h3>

Parallel lines have the same slope since the slope is like a measure of steepness and since parallel lines are of the same steepness, thus, are of the same slope.

Since the given parallel line has equation y = 2x + 2, thus its slope is 2 and thus, the slope of the needed line is 2 too.

Then we have

The distance between line a and line c is constant. Then line a and line c are parallel lines.

Line a || line c. Then the correct option is C.

Learn more about parallel lines here:

brainly.com/question/13857011

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2 years ago

How tall is a tree which is 15 feet shorter than a pole that is 3 times as tall as the tree?

Citrus2011 [14]

<h2>Height of tree is 7.5 feet</h2>

Step-by-step explanation:

Let t be the height of pole.

Given that the tree is 5 feet shorter than a pole.

Height of pole = t + 15

Also given that the pole is 3 times as tall as the tree.

Height of pole = 3t

So we have

t + 15 = 3t

2t = 15

t = 7.5 feet

Height of tree = 7.5 feet

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3 years ago