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vredina [299]
3 years ago
10

I really need help on this question anyone

Mathematics
1 answer:
Nutka1998 [239]3 years ago
6 0
Well on 3 for the circle its 1/2×15×8=60
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Factorise fully<br>5ac - 10a2b + 30a​
irga5000 [103]

Answer:

5a(c-2ab+6)

Step-by-step explanation:

5a is in all three, then factorise

5 0
3 years ago
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Irene wants to list the factors for 88. She
Paladinen [302]

Almost; she's just missing 1, since 1*88 = 88.

3 0
3 years ago
Who used less sugar 5/10 or 5/6
abruzzese [7]
It would be 5/6 because the denominator Is smaller than 10

can I be brainliest
7 0
3 years ago
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Can you solve this? I need help. I don't understand.
ZanzabumX [31]

Answer:

2 sqrt(5) OR 4.5

Step-by-step explanation:

You have to know Pythagorean theorem to solve this question.

a^2 + b^2 = c^2

To use this theorem you have to have a right triangle. There are two right triangles in your image. The lower (larger) one has two sides labeled, so you can use Pythagorean thm to find the third side. There's a short cut, bc some right triangles have easy-to-memorize lengths of the sides. 3-4-5 is one of these number sets. A multiple of this is 6-8-10. We could've solved:

b^2 + 8^2 = 10^2

But it would've come out the same. The unlabeled side is 6.

We can use the 6 and the 4 on the smaller right triangle and use the Pythagorean thm again to solve for x.

4^2 + x^2 = 6^2

16 + x^2 = 36 subtract 16 from both sides.

x^2 = 20

Take the square root of both sides.

sqrt (x^2) = sqrt 20

x = 2 sqrt(5) which is approximately 4.472.

2 sqrt(5) is an exact answer if that is what they are asking for. 4.472 is an approximation to the nearest thousandth. It would be 4.47 to the nearest hundredth or 4.5 to the nearest tenth.

8 0
2 years ago
What is x in the equation in -4(3x+7)= 4
Nana76 [90]

Answer:

-12x-28=4

-12x=32

x=-16/3

Step-by-step explanation:

7 0
3 years ago
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