3 years ago

Factor completely x3 - y3

Mathematics

1 answer:

stealth61 [152]3 years ago

8 0

Answer:

$(x-y)(x^2+xy+y^2)$

Step-by-step explanation:

$x^3 - y^3=(x-y)(x^2+xy+y^2)$

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Calculate the measure of arc AC if the measure of arc CD is 170 degrees and arc AB is 80 and AB||CD.

CaHeK987 [17]

Answer:

AC = 55°

Step-by-step explanation:

In this geometry, arcs AC and BD have the same measure. The sum of the parts of arc CD will total the measure of CD.

AC + AB + BD = CD

2AC +80 = 170

AC = 110/2 = 55

The measure of arc AC is 55°.

5 0

2 years ago

There are 32 students in a class. Of the class, 3/8 of the students bring their own lunches. How many students bring their lunch

OverLord2011 [107]

Answer:

The number of students that bring their lunches is 12

Step-by-step explanation:

Let

x -----> the number of students that bring their lunches

y -----> the total number of students in a class

we know that

The number of students that bring their lunches divided by the total number of students in a class must be equal to 3/8

$\frac{x}{y}=\frac{3}{8}$

$x=\frac{3}{8}y$ -----> equation A

$y=32$ -----> equation B

substitute the value of y in equation A and solve for x

$x=\frac{3}{8}(32)$

$x=12$

therefore

The number of students that bring their lunches is 12

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3 years ago

Which statement about the function is true?

bonufazy [111]

Answer:

The answer is The function is decreasing for all real values of x

where

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Step-by-step explanation:

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3 years ago

A pound of chocolate costs 8 dollars. Ann buys p pounds. Write an equation to represent the total cost c that Ann pay

aleksandrvk [35]

Answer:

Since it is 6 dollars per pound, his total cost c is 6 times p...thus

c = 6p

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3 years ago

If Alberto's bill is $45.47 with tax. And he wants to leave a 20% tip. How much tip will he leave? * round to the nearest dollar

Sindrei [870]

Answer:

i tried but all i got was like 80 percent

Step-by-step explanation:

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2 years ago

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