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poizon [28]
2 years ago
15

√32+√42 ÷ √8 +√12 simplify

Mathematics
1 answer:
pav-90 [236]2 years ago
5 0

Note: It should be 48 instead of 42 because √42 cannot be simplified.

Given:

Consider the given expression is

\dfrac{\sqrt{32}+\sqrt{48}}{\sqrt{8}+\sqrt{12}}

To find:

The simplified form of the given expression.

Solution:

We have,

\dfrac{\sqrt{32}+\sqrt{48}}{\sqrt{8}+\sqrt{12}}

It can be written as

=\dfrac{\sqrt{16\times 2}+\sqrt{16\times 3}}{\sqrt{4\times 2}+\sqrt{4\times 3}}

=\dfrac{4\sqrt{2}+4\sqrt{3}}{2\sqrt{2}+2\sqrt{3}}

=\dfrac{4(\sqrt{2}+\sqrt{3})}{2(\sqrt{2}+\sqrt{3})}

=\dfrac{4}{2}

=2

Therefore, the simplified form of the given expression is 2.

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7. A cheetah ran 300 feet in 2.92 seconds. What was the cheetah’s average speed in miles per hour? Show your work.
ANTONII [103]
300 feet * mile / 5,280 feet = <span> <span> <span> 0.0568181818 </span> </span> </span> miles

2.92 seconds * hour / 3,600 seconds = <span> <span> <span> 0.0008111111 </span> </span> </span> hours

<span> <span> 0.0568181818 </span> </span> miles / <span> <span> 0.0008111111 </span> </span> hours =
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5 0
3 years ago
Words<br> a. Divide the difference<br> between 1,200 and 700 by 5
dexar [7]

Answer:

<em>100</em>

Step-by-step explanation:

1,200 - 700 = 500

500/5 = 100

Btw, uan got to, but I would really appreciate it if u marked me brainliest cuz I need one more nd I tried

6 0
3 years ago
Susan will rent a car for the weekend. She can choose one of two plans. The first plan has an initial fee of $70 and costs an ad
swat32

Answer:

350 miles

Step-by-step explanation:

Let x represent the miles driven

The cost with the first plan will be represented by 0.40x + 70

The second plan will be represented by 0.60x

Set these 2 expressions equal to each other and solve for x:

0.40x + 70 = 0.60x

70 = 0.20x

350 = x

So, Susan will have to drive 350 miles for the cost to be the same

4 0
3 years ago
Pencils cost $0.20 each.
blsea [12.9K]
A) f(x)=0.2x
B)f(12)=0.2(12)=2.4 dollars
7 0
2 years ago
Estimate the answer to the following problem to the nearest 10 13+46+87= a. 130 b.155 c.160 d.150
Lunna [17]
150

13+46= 59
59+87= 146

Round 46 to the nearest ten, which in this case would be 50 because the last number is larger than a 5. 

Then add the 1 back in to make it 150.
3 0
3 years ago
Read 2 more answers
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