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2 years ago

Fifteen more than three times a number is at most seven.

Mathematics

1 answer:

NNADVOKAT [17]2 years ago

5 0

Answer: 3n + 15 ≤ 7

n = number

hope this helped! :D

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Peter plans to build a tree house in his back yard. He needs to know how many square feet of lumber he should buy for the floor.

11Alexandr11 [23.1K]

Answer:

20n

Step-by-step explanation:

Multiply square feet per person times the number of persons to find square feet.

The units analysis looks like this:

$\dfrac{\text{ft}^2}{\text{person}}\times \text{persons}=\text{ft}^2\\\\20\dfrac{\text{ft}^2}{\text{person}}\times n\,\text{persons}=20n\,\text{ft}^2$

4 0

2 years ago

Read 2 more answers

I would if someone could answer this :)

Lina20 [59]

1- 90
2- 60
3- 60
4- 30

4 0

3 years ago

Read 2 more answers

Given it's midpoint and one endpoint apply the midpoint formula and solve for x and y midpoint (22,15) endpoint (18,6

Nutka1998 [239]

Midpoint formula

mid of (x1,y1) and (x2,y2) is
$( \frac{x2+x1}{2}, \frac{y2+y1}{2})$

so

(22,15)= $( \frac{18+x1}{2}, \frac{6+y1}{2})$
therefor

22= $\frac{18+x1}{2}$
and
15= $\frac{6+y1}{2}$

slv each
22= $\frac{18+x1}{2}$
times both sides by 2
44=18+x1
minus 18 both sides
26=x1

15= $\frac{6+y1}{2}$
times both sides by 2
30=6+y1
minus 6
24=y1

the other point is (26,24)

4 0

2 years ago

A right triangle has legs measuring 4.5 meters and 1.5 meters.

sasho [114]

Well,

If the length of the legs of the second triangle are proportional to the lengths of the legs of the first triangle, we could simply multiply both of the dimensions by whole numbers and get an infinite number of proportional lengths.

Example:
4.5 * 2 = 9
1.5 * 2 = 3

A triangle with legs measuring 9 meters and 3 meters will be proportional to the first triangle with leg lengths of 4.5 and 1.5 meters, respectively.

More proportional lengths:
4.5 * 3 = 13.5
1.5 * 3 = 4.5

4.5 * 4 = 18
1.5 * 4 = 6

5 0

3 years ago

11cm by 6 cm rectangle

puteri [66]

Answer:

Question unclear.

If the question was about the perimeter of the rectangle, it is calculated as:

= (Length * 2) + (Height * 2)

= (11 * 2) + (6 * 2)

= 22 + 12

= 34 cm

If the question was bout Area, the area is:

= Length * width

= 11 * 6

= 66 cm²

8 0

3 years ago