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Rasek [7]
3 years ago
10

Write an expression in expanded form that is equivalent to 3(7d + 4e)

Mathematics
2 answers:
Vladimir79 [104]3 years ago
8 0
21d+12e
answer mine pleadw
Leto [7]3 years ago
4 0
21d + 12e is correct
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Varvara68 [4.7K]
If the angle in B is 45º, that means the angle in A is also going to be 45º, considering it's a right triangle, so AC and BC are they have the same length.
Then using Pythagoras, you'll get that AC^{2} + BC^{2} equals AB^{2} .
Now, you know that AC=BC and that AB=24.
So you'll get 2AC^{2} =24^2 . You do the square root in both sides and you get that 2AC=24 and AC=12.

Now that you know that both AC and BC equal 12, you can find the area by just multiplying them and then diving them by 2. (The formula for the area of a triangle is half base multiplied by height, and in a right triangle, if a cathetus is the base, the other cathetus<span> will be the height)

And so the area is equal to 72.</span>
8 0
3 years ago
Any tips on how to do this?? i have no clue how
Black_prince [1.1K]

Answer:

6.7

Step-by-step explanation:

For this questions we have the oppsotie side and need the adjacent

out of SOH, CAH, TOA we will sue TOA

tan(56)=10/x

tan(56)/10=1/x

10/tan(56)=x

x=6.745 which rounds to 6.7

8 0
3 years ago
How to factorise 5a squared - 4ab
Marizza181 [45]
You can take the a out of both values. There are no other factorable parts of this expression. Your factored version would look something like this- a(5a-4b)
Hope that helped you out a bit nuzhat! ☺️
8 0
3 years ago
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If the area of the Arctic Ocean is 16% of the area of the Atlantic ocean what is the area of the Arctic Ocean
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Idk how big is 16% is 16% like 20

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telo118 [61]

Answer:the slope would be 7/3

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