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Svetlanka [38]
3 years ago
12

Evaluate the following: 3 Squared ÷ (2 + 1). 2 3 4 5

Mathematics
2 answers:
hoa [83]3 years ago
6 0
The answer is 3 hoped that helped
Setler79 [48]3 years ago
3 0
The final anwers is 3.
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People drive, on average, 14,579 miles per year. About how many mile each week is that? (Note: there are 52 weeks in a year)
Vikki [24]

Answer:278.44

Step-by-step explanation:

Divide the miles per year by months

6 0
2 years ago
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Given the formula D = ABC what is the formula for C
Andru [333]
In order to solve for C, you need to get it by itself. You would do this by dividing both sides by A and B. if you do this you get C=D/AB. Therefore, your answer would be D
6 0
3 years ago
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the ratio of sallys height is 7:8. if the sum of their heights is 90 inches. how tall are sally and jack?
pickupchik [31]

Answer:

Sally is 42 in. tall, and Jack is 48 in. tall.

Step-by-step explanation:

There are some words missing in the problem.

Perhaps the problem was meant to read:

"The ratio of Sally's height to Jack's height is 7:8. If the sum of their heights is 90 inches, how tall are Sally and Jack?"

Solution:

The ratio of the heights is 7:8.

Sally could measure 7 inches and Jack 8 inches, but then when you add the heights, 7 in. + 8 in. = 15 in. which is not 90 inches.

If you multiply both numbers in a ratio by the same number, the new numbers are still in the same ratio.

Multiply 7 and 8 by 2. You get 14 and 16. Maybe Sally is 14 in. tall and Jack is 16 in. tall. Add the heights, 14 in. + 16 in. = 30 in. This is also not 90 in.

We can keep on guessing what number to multiply by 7 and 8 by so their sum is 90, but we can use algebra to write an equation and not have to go through many guesses.

There is a number, x, that when you multiply 7 and 8 by x, the sum of the products is 90. We don't know what x is, but we can write an equation and solve for x.

The numbers in the ratio are 7x and 8x.

7x and 8x are still in the ratio 7:8.

Now we add the numbers 7x and 8x and set the sum equal to 90. Then we solve for x.

7x + 8x = 90

15x = 90

x = 6

We get x = 6. Now we know we need to multiply both 7 and 8 by 6 to get the heights we need.

7 in. * 6 = 42 in.

8 in. * 6 = 48 in.

Check: 42 in. + 48 in. = 90 in.

Answer: Sally is 42 in. tall, and Jack is 48 in. tall.

7 0
2 years ago
PLZ HELP WILL MARK!!! <3
Digiron [165]
The equation x^2 - 6x + 9 is a perfect square and when factored out it becomes C. ) It is a perfect square (x - 3)^2
7 0
3 years ago
Need help pls pls!!!!!!
Artyom0805 [142]

Answer:

2916 ft³

Step-by-step explanation:

•the diameter of the sphere is 18 ft , to find the radius(r) you have to divide it by 2 ,

•which gives 9ft .

•And they also told you to take the value of pie as 3.

•So, substitute the values into the formula given for V and you will have your answer.

Hope I was able to help:))

4 0
3 years ago
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