3 years ago

I'm really bad at math

Mathematics

1 answer:

Lynna [10]3 years ago

6 0

What chapter is this?

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Help me plssssss!!!!!!!!!

maksim [4K]

Answer:

Step-by-step explanation:

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3 years ago

Which expression is equivalent to 9 x squared minus 2 y + 3 x squared minus 3 y?

lyudmila [28]

Answer:

The correct answer is 11 x squared + 2 y + x squared minus 3 y

Step-by-step explanation:

Just took the test on Edg. Hope it helps :)

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3 years ago

Read 2 more answers

Use the distributive property to rewrite the expression 3 (2+11)

kolbaska11 [484]

Answer:

3(2+11) = 3x2 + 3x11

Step-by-step explanation:

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2 years ago

-5=-10+<br><br> I don’t understand this can someone please help me with this?? Thank you

likoan [24]

Answer:

im pretty sure its 5+

Step-by-step explanation:

8 0

3 years ago

Which of the following correctly expresses sin (70) + sin(30) as a product?

JulsSmile [24]

Answer:

2sin50 cos20

Step-by-step explanation:

We need to write sin (70) + sin(30) as a product. The formula used here is :

$\sin A+\sin B=2\sin (\dfrac{A+B}{2})\cos(\dfrac{a-b}{2})$

Here, A = 70 and B = 30

So,

$\sin 70+\sin 30=2\sin (\dfrac{70+30}{2})\cos(\dfrac{70-30}{2})\\\\\sin 70+\sin 30=2\sin 50\cos20$

So, the value of sin (70) + sin(30) is 2sin50 cos20. Hence, the correct option is (c).

7 0

3 years ago