2 years ago

Which expression is equivalent to 13 22b

Mathematics

1 answer:

aleksklad [387]2 years ago

4 0

The answer is A, I know those link people get so annoying.

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If f(x) = 2x squared - 5x + 7 what is the value of f(-3)

ch4aika [34]

Answer:

f(-3)=40

Step-by-step explanation:

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2 years ago

How long did it take a biker to travel 20 miles at 12mph

Anika [276]

Time = Distance / speed

Time = 20 miles / 12mph

Time = 1 and 2/3 hours ( 1 hour and 40 minutes)

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2 years ago

the perimeter of a rectangle if the width is w centimeters and the length is 3 cm more than twice the width

lianna [129]

L being the length, W being the width.

So:

if the Length is 8cm more than twice the width, we have:

2W+8

so it's:

perimeter of a rectange = 2(2W+8)+2W

You asked me not to simplify it, so that should be your answer.

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2 years ago

Which expression is equivalent to (81x4y16)12 for all positive values of x and y?<br> 40.5x4y16

IrinaVladis [17]

Answer:

$(81x^4y^{16})^{\frac{1}{2}} = 9 x^2 y^8$

Step-by-step explanation:

Given

$(81x^4y^{16})^{\frac{1}{2}}$

Required

Determine an equivalent expression

Express 81 as $9^2$

$(9^2x^4y^{16})^{\frac{1}{2}}$

Apply law of indices

$9^2^{\frac{1}{2}} * x^4^{\frac{1}{2}} * y^{16}^{\frac{1}{2}}$

$9^{\frac{2*1}{2}} * x^{\frac{4*1}{2}} * y^{\frac{16*1}{2}}$

$9^{\frac{2}{2}} * x^{\frac{4}{2}} * y^{\frac{16}{2}}$

$9^1 * x^2 * y^8$

$9 * x^2 * y^8$

$9 x^2 y^8$

Hence:

$(81x^4y^{16})^{\frac{1}{2}} = 9 x^2 y^8$

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2 years ago

What is a number divided by 9

LuckyWell [14K]

18 divided by 9 is 2

8 0

3 years ago

Read 2 more answers