I need help ASAP please (radical expressions)

Mathematics

1 answer:

amid [387]3 years ago

7 0

Answer:

A. I only

Step-by-step explanation:

We need to start off by taking perfect squares out of these square roots.

Begin with the numerator. It looks like we can take 4 out of the radical: $\sqrt{40} = \sqrt{4*10} = \sqrt{4} * \sqrt{10} = 2 \sqrt{10}$

Now we have

$\frac{2\sqrt{10}}{\sqrt{10} }$

Looks like those $\sqrt{10}$ s can cancel!

= 2

Plug those answers into your calculator. II and III don't equal 2, but I does. This makes sense when we consider the rule that if you're dividing two radicals, you can just pull the radical over the whole expression!

The answer is A. I only.

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Artist 52 [7]

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3 years ago

Solve for p: -9 + p < 15 A. p > 24 B. -p > 6 C. p < 24 D. -p < -6

Soloha48 [4]

Answer:

C. In the given expression -9 + p < 15 , the value of p < 24.

Step-by-step explanation:

Here, the given expression is :

-9 + p < 15

Now, solving for the value of p.

If equals are added to both sides of inequality, the inequality remains unchanged.

Now, -9 + p < 15

⇒ -9 + p + 9 < 15 + 9 (adding +9 on both sides)

or, p < 24

Hence, in the given expression -9 + p < 15 the value of p < 24.

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3 years ago

2(1/4x + 4) = 3(x -2) PLZ HELP

frozen [14]

Distribute 2 and remove parentheses :
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Multiply both sides of equation by 2:
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Move terms:
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Collect like terms:
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Divide both sides:
x=28/5

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2 years ago

Solve for k 4.5+1.5k=18−3k

sertanlavr [38]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{k = 3}}}}}$