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3 years ago

What is the answer to this question?

Mathematics

2 answers:

pochemuha3 years ago

4 0

Answer: A

I'd have to say a because it's the closest answer or best estimate.

olasank [31]3 years ago

4 0

45 you have to round The first book to $9 the second to$14 and the third to $22 add them all up and you have 45

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Help me please,Thanks

Ann [662]

The answer is 24m^2 i just finished that test and that was the answer.<span />

4 0

3 years ago

Determine the value of variables a, b, and c that make each equation true.

dybincka [34]

Corrected Question

Determine the values of a, b and c that make each equation true.

$(x^a)^6=\dfrac{1}{x^{30}} \\\\(x^{-7})^{-4}=x^b\\\\(x^{-2})^c=x^{22}$

Answer:

a=-5, b=28 and c=-11

Step-by-step explanation:

To solve for a,b and c, we apply the following laws of indices

$\dfrac{1}{x^y}=x^{-y} \\\\(x^m)^n=x^{m X n}\\\\$If x^m=x^n,$ then m=n$

Therefore

$(x^a)^6=\dfrac{1}{x^{30}}\\x^{a*6}=x^{-30}\\6a=-30\\a=-5$

To solve for b

$(x^{-7})^{-4}=x^b\\x^{-7*-4}=x^b\\x^{28}=x^b\\b=28$

To solve for c

$(x^{-2})^c=x^{22}\\x^{-2*c}=x^{22}\\-2c=22\\c=-11$

4 0

3 years ago

Write an expression that represents the area of a rectangle with length 4ab^2 and width 2ab

Allushta [10]

The expression would be:

A = 1/2 (4ab^2) (2ab)

Hope this helps!

3 0

4 years ago

SOMEONE PLEASE HELP ME ASAP PLEASE!!!

Kaylis [27]

Answer:

A = 45 units^2

Step-by-step explanation:

This is a trapezoid

A = 1/2 (b1+b2) h

b1 is the top = 7

b2 is the bottom = 11

h = 5

A = 1/2 ( 7+11) *5

A = 1/2 ( 18)*5

A = 45 units^2

7 0

4 years ago

PLEASE HELP <br> 5|12-r|>15

Novay_Z [31]

Step-by-step explanation:

5.|12 - r| > 15

|12 - r| > 15/5

|12 - r| > 3

12 - r < -3 or 12 - r > 3

-r < -3 - 12 or -r > 3 - 12

-r < -15 or -r > -9

r > 15 or r < 9

4 0

2 years ago