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3 years ago

The product of x and 9 equals 45

Mathematics

2 answers:

nirvana33 [79]3 years ago

6 0

Answer:

Step-by-step explanation:

adell [148]3 years ago

4 0

Answer:

Step-by-step explanation:

because ?*9=45

45÷9=5

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R 3. The mean of 4 numbers is 8. Three of the numbers add up to 22. What is the last number?

statuscvo [17]

<h2><em><u>Solution</u></em> : </h2>

let the last number be x

we know,

$\boxed{mean = \frac{sum \: \: of \: \: all \: \: observations}{number \: \: of \: \: observations} }$

So,

$\hookrightarrow \: 8 = \dfrac{22 + x}{4}$

$\hookrightarrow \: 8 \times 4 = 22 + x$

$\hookrightarrow \: 32 = 22 + x$

$\hookrightarrow \: x = 32 - 22$

$\hookrightarrow \: x = 10$

therefore, the last number is 10.

7 0

2 years ago

I just am confused what to do on 11-16 and if able to can’t 1-9 be checked

viktelen [127]

Answer:

add all the sides that you have and subtract it from 180

Step-by-step explanation:

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2 years ago

What is the area of this rectangle

Setler [38]

A) 16 in2 :))))))))))))))))))))

3 0

3 years ago

Yash brought apples and bananas to a picnic The number of apples was three more than twice the number of beane Tach brought 11 a

Ivenika [448]

Answer:

25 bananas

Step-by-step explanation:

11 apples doubled is 22 then plus 3 in 25 this he brought 25 bananas

7 0

3 years ago

Dante runs 7 miles in 60 minutes. At the same rate, how many miles would he run in 24 minutes?

denis23 [38]

<h2>Answer: 2.8 miles</h2>

Step-by-step:

We can write it in the proportion $\frac{7}{60} = \frac{x}{24}$

where x is our number of miles trying to find

We now cross multiply or use the butterfly method which I will demonstrate both

<h3>Cross Multiply</h3>

We multiply the numerator with the dominator

so $7 multiplied by 24$

and $60 multiplied by x$

$7*24=60x$

$168=60x$

$\frac{168}{60} =\frac{60x}{60}$

$2.8=x$ or $x=2.8$

Now for the

<h3>Butterfly Method </h3>

You would do 7 times 24 divided by 60 or $\frac{7*24}{60}$

Then $\frac{168}{60}$ simplify

$2.8$ so 2.8 miles in either method

3 0

3 years ago