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Viefleur [7K]
2 years ago
11

N is the midpoint of AC; AN = 4x - 7 and NC = 5x - 15 Find NC=

Mathematics
1 answer:
coldgirl [10]2 years ago
4 0

Answer:

A____N____C

AN= NC

4x-7=5x-15

5x-4x= 15-7

x= 8

NC = 5x-15=5(8) – 15 = 40 – 15 = 25

I hope I helped you^_^

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Elena bought a backpacking tent to take with her on hiking trips.
Masteriza [31]

Answer:

Question 1 = c) Medium: 88 ft²

Question 2 = d) 46.7 ft³

Step-by-step explanation:

Question 1

We would be solving this question by finding the surface area of the tent. The shape of the tent is a square based pyramid.

The surface area of a square based pyramid(tent) =

a² + 2ah

Where in the diagram,

a = base length = 4 ft

h = height of the pyramid (tent ) = 9ft

Surface area = 4² + 2 × 4 × 9

= 16 + 72

= 88ft²

Therefore, the size tarp should she purchase is Medium: 88 ft²

Question 2

For question 2, from the attached diagram, we can see that the diagram is a square based pyramid.

To calculate the amount of water that would fill the square based pyramid, we would have to find the Volume of the tent(square based pyramid).

The formula for the Volume of the tent(square based pyramid) = 1/3(a²h)

Where a = base edge

h = height of the pyramid.

From the diagram,

a = base edge => 4ft.

From the question,

h = height of the tent is given as how tall the tent is = 8.75ft.

Therefore, 1/3(a²h)

1/3 × (4ft)²× 8.75ft

= 46.67ft³

Approximately = 46.7ft³

Therefore, the amount of water it would it take to fill the tent, if the tent is 8.75 ft tall is 46.7ft³

3 0
3 years ago
I can decide on the answer
maxonik [38]

Answer:

X=9

Step-by-step explanation:

3x-15=12

Add 15 to both sides which makes it

3x=27

Divide by 3, which gives you 9

7 0
3 years ago
Please help me, I will give brainliest and Ill give 15 points. PLEASE HELP ASAP!!!!!!!!!!!!
Svet_ta [14]

Answer:

Formula: 2\pir

Subsitute: 2\pi2

Solve: (2)(3.14)(2) = 12.56= circumference

In terms of pi: 4\pi

Step-by-step explanation:

8 0
2 years ago
Luis is saving money to purchase a new video game. He has a total of 30 coins consisting of nickels and dimes. The value of the
scoundrel [369]
A) N + D = 30
B) .05N + .1D = 2.20

Multiplying equation A by -.05
A) -.05N  -.05D = -1.50 then adding it to B
B) .05N + .1D = 2.20
.05D = .70
Dimes = 14

Nickels = 30 -14 = 16

4 0
2 years ago
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Evaluate the numerical expression. −2.2(1.1 − 6.6)
Arisa [49]
The answer is -6.7 i am pretty sure that is
6 0
3 years ago
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