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Travka [436]
3 years ago
6

5a-(-4a-7) i need this its so confusing

Mathematics
2 answers:
earnstyle [38]3 years ago
6 0
I put this into the app Photomath and got the answer of 9a+7 which might be right but so sure I’ve never done a problem like this before
g100num [7]3 years ago
5 0
5a-(-4a-7)
-(-4a-7) = 4a + 7
= 5a + 4a + 7

Then we will add the similar elements:
5a + 4a = 9a
Plus the seven we had:

Final answer: 9a + 7.

I hope I helped.
If you have any questions, please let me know! :)
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Elena bought a backpacking tent to take with her on hiking trips.
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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

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Answer:

Step-by-step explanation:

Hi guy I just wanted to say have a very good day and I hope you are alright today and I hope this helped out your day alright peace out

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