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3 years ago

What is a simpler form of the following expressions?

Mathematics

1 answer:

nadezda [96]3 years ago

6 0

Answer:

D. 49p² - 64

Step-by-step explanation:

(7p - 8)(7p + 8)

Solving this requires the 'difference of squares' concept which states;

If (a - b)(a + b)

Then the solution must be a² - b²

Considering (7p - 8)(7p + 8) then the answer is;

(7p)² - 8² = 49p² - 64

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Change each improper fraction into an equal mixed number.

Dmitriy789 [7]

Answer:

A. 3 3/4

B. 4 5/9

C. 8 3/8

D. 12 3/11

E. 5 7/20

F. 2 145/174

Hope That Helps!

8 0

3 years ago

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Solve the system of equations below.<br> x + y = 5<br> -4x – 2y = -8

mel-nik [20]

Answer:

x = -1 , y = 6

or (-1, 6)

Step-by-step explanation:

First solve for "y" in the second equation:

$-4x-2y=-8\\-4x+8=2y\\y=-2x+4$

and now, use this result as a substitution for "y" in terms of "x" in the first equation:

$x+y=5\\x+(-2x+4)=5\\x-2x+4=5\\-x=5-4\\-x=1\\x=-1$

Knowing the value of "x", now we place it in the substitution equation to find "y":

$y=-2x+4\\y=-2(-1)+4\\y=6\\$

6 0

3 years ago

What multiplies to -144 and adds to 7?

DaniilM [7]

-9 and 16 add to make 7 and multiply to make -144

3 0

3 years ago

Read 2 more answers

Please can somebody help me out ASAP

zysi [14]

Answer:

5/3.14= 1.6

Step-by-step explanation:

6 0

4 years ago

A pizza is an example of a circular object. For each part of the circle in the table, provide a description of where you see

shusha [124]

Answer:

radius = length of one straight edge of one slice of pizza

minor arc = sum of the lengths of the curved edges of 1, 2, or 3 adjacent slices of pizza

diameter = length of 2 straight edges of 2 opposite slices of pizza

major arc = sum of the lengths of the curved edges of 5, 6 or 7 adjacent slices of pizza

semicircle = sum of 4 adjacent slices of pizza

3 0

2 years ago