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2 years ago

Trina's teacher asked her to explain the division problem 48 ÷ 12. Which choice gives the correct explanation?

Mathematics

2 answers:

miskamm [114]2 years ago

6 0

B.) 48 has to be broken up into 12 to get 4

Anna007 [38]2 years ago

3 0

Answer: B) Break 48 into 12 groups of 4.

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given.

48÷12

This expression means dividing the number 48 by 12, or in other words, break 48 into 12 groups of 4.

So, if we solve :

48÷12= 4

In conclusion, the correct option is B)Break 48 into 12 groups of 4.

Feel free to ask for more if it´s necessary or if you did not understand something.

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The Jackson family is driving from Boston to New York for a summer vacation trip. So far, they have driven 84 miles which is 40%

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Answer:

210

Step-by-step explanation:

just use a percentage calculator

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The stream of water from a fountain follows a parabolic path. The stream reaches a maximum height of 12 feet, represented by a v

tia_tia [17]

Answer:

y=-3/16(x-8)^2+12

Step-by-step explanation:

Refer to the vertex form equation for a parabola:

y=a(x-h)^2+k where (h,k) is the vertex.

Therefore, we have y=a(x-8)^2+12 as our equation so far. If we plug in (16,0) we can find a:

0=a(16-8)^2+12

0=64a+12

-12=64a

-12/64=a

-3/16=a

Therefore, your final equation is y=-3/16(x-8)^2+12

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1.625 round to the nearest tenth?need help

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1.625 rounded to the nearest hundredth is 1.63

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Combine the like terms to create an equivalent expression.<br><br> 10k+1+8k+2

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Once you combine like terms you are left with 18k +3.

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(20 pts!) if the base of the roof has length 40 feet and x=30, which of the following gives the height of the roof?

musickatia [10]

Answer:

23.094 ft approximately

(If you want your answer in a different format, let me know please.)

Step-by-step explanation:

I would have solve this using tangent since the side opposite to x is asked for and the adjacent side to side is given as having a measurement of 40 ft.

But I think they want you to use the formula:

$l=\frac{b}{\cos(x)}$ .

$l=\frac{40}{\cos(30)}$

Input into calculator:

$l=46.188$ (approximation)

l represents the length of the roof.

So we have l=46.188 and b=40.

We must use the Pythagorean Theorem to find the height,h, for of the roof.

l is the hypotenuse.

$h^2+40^2=46.188^2$

$h^2+1600=2133.331$

Subtract 1600 on both sides:

$h^2=533.331$

Take square root of both sides:

$h=23.094$

The answer is 23.094 feet for the height that roof reaches on the building.

I want to show you another way:

$\tan(x)=\frac{\text{opposite}}{\text{adjacent}}$

$\tan(30)=\frac{h}{40}$

Multiply both sides by 40:

$40\tan(30)=h$

Input into calculator:

$23.094=h$

I didn't do it this way because your problem suggested you use their formula to find the height.

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