3 years ago

Help me i really need this .no spam

Mathematics

1 answer:

Naya [18.7K]3 years ago

4 0

Question : 8

$11 \sqrt{5} + 4 \sqrt{7}$

Question : 9

$x = - 1$
$y = - 3$

Question : 11

LHS isn't equal to RHS

Question : 12

$x = \dfrac{ \sqrt{3} }{2 \sqrt{2} }$

Solution is in attachment ~

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Dagne measures and finds that she can do a vertical jump that is 27.5% of her height. If Dagne is 48 inches tall, how high can s

larisa [96]

Answer:

She can jump 13.2 inches.

Step-by-step explanation:

In order to compute how high Dagne can jump we must find how much is 27.5% of 48 inches. We can do that by applying a rule of three, where 48 inches is to 100% as x inches is to 27.5%. In this case x will be the height of her jump. So we have:

48 inches -> 100%

x inches -> 27.5%

x = (48*27.5)/100 = 13.2 inches

She can jump 13.2 inches.

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4 years ago

A train travels 18 kilometers in 12 minutes. At this rate, how far does the train travel in 1 minute?

bulgar [2K]

The answer is 1.5 kilometers per minute

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3 years ago

What is the product of 8 times 4 minus the sum of 12 and 7?

klio [65]

Answer:

Step-by-step explanation:

8 × 4 = 32

12 + 7 = 19

32 - 19 =13

5 0

3 years ago

Americans who are 65 years of age or older make up 13.2% of the total population. If there at 30.3 million american in this age

zhannawk [14.2K]

Given:

Americans who are 65 years of age or older make up 13.2% of the total population.

Required:

The total u.s. population

Explanation:

Let the total population of u.s be x.

According to the given condition.

$13.2\text{ \% of x = 30.3 billion}$

Therefore,

$\begin{gathered} \frac{13.2}{100}\text{ }\times\text{ x = 30.3} \\ x\text{ = }\frac{30.3\text{ }\times\text{ 100}}{13.2} \\ x\text{ = 229.55 billion} \end{gathered}$

Answer:

Thus the total population of u.s is 229.55 billion.

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1 year ago

Can you please help me ?

OLEGan [10]

I hope this helps you

6 0

3 years ago

Help me i really need this .no spam​

Help me i really need this .no spam