2 years ago

I’m confused on this one

Mathematics

1 answer:

Vinil7 [7]2 years ago

8 0

Here is a general rule for sin and cos

sin x = cos (90 - x)

cos x = sin (90 - x)

These rules are complementary, so for your problem

cos 75 = sin (90 - 75) = sin 15 as your answer.

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What is 3:120 equivalent to

fenix001 [56]

1:40 because if we think of this just like a fraction $\frac{3}{120}$ that simplifys down to $\frac{1}{40}$ and because fraction simplifications are similar (related to each other) we can concur that these would be too.

Enjoy!=)

6 0

3 years ago

Read 2 more answers

Evaluate the expression 3(7 + 4)2 − 14 ÷ 7. 50 361 363 586

Kipish [7]

It appears that none of your option choices are correct,, are you sure you copied them right ? I will show you how to solve this and how I got my answer.
The first step for solving this is to add the numbers in the parenthesis.
3 × 11 × 2 - 14 ÷ 7
Divide -14 by 7.
3 × 11 × 2 - 2
Divide the first 3 numbers together.
66 - 2
Subtract the numbers together to get your final answer.
64
Let me know if you have any further questions.
:)

4 0

2 years ago

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HELP!! Given f(x)=5x squared and g(x) = x squared + 2x squared - 5x, what is F (x) * g(x)?

TEA [102]

X^2+2x^2-5x

((x^2)+2x^2)-5x

Pull the factors out

3x^2-5x=x(3x-5)

x(3x-5)

x(3x-5)*5x^2

5x(3x-5)*x^2

Final

5x^3*(3x-5)

8 0

2 years ago

In triangle NLM, point S is the centroid, QS = (3x – 5) cm, and NS = (4x) cm. What is NS? 5 cm 10 cm 20 cm 30 cm

RUDIKE [14]

Answer:

20 cm hope i helped