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mixer [17]
3 years ago
13

Are all of these correct?

Mathematics
2 answers:
maks197457 [2]3 years ago
8 0

Answer:

all the answers are correct

Step-by-step explanation:

on number eight in the work on the 9x it should say -9x but you fixed it later so the answer is right but the work at that point isnt

aalyn [17]3 years ago
7 0
1. Is correct
2. For this one I got -2+8k(I think that’s the same answer just worded differently
3. Correct!!
4. I got -2-10a(also believe that’s the same)
5. Correct
6. Correct
7. I got 5n+24
8. Correct!!!
GOOD JOB GIRL!!!
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Answer:

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3 years ago
Find the value of t, rounded to the nearest tenth
sergij07 [2.7K]

<u>Given</u>:

Given that RST is a right triangle.

The measure of ∠R is 35°.

The length of ST is 12 units.

The length of the hypotenuse is t units.

We need to determine the value of t.

<u>Value of t:</u>

The value of t can be determined using the trigonometric ratio.

Thus, we have;

sin \ \theta=\frac{opp}{hyp}

where \theta=R, the side opposite to ∠R is ST and hypotenuse is SR.

Substituting these values, we get;

sin \ R=\frac{ST}{SR}

Substituting ST = 12 and SR = t, we get;

sin \ 35^{\circ}=\frac{12}{t}

Simplifying, we get;

t=\frac{12}{sin \ 35^{\circ}}

t=\frac{12}{0.574}

t=20.9

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3 years ago
(2x-10)(x+3)<br> Simplify each expression
irga5000 [103]
2x^2-4x-30 would be your answer

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</span></span></span><span>=<span><span><span><span><span>(<span>2x</span>)</span><span>(x)</span></span>+<span><span>(<span>2x</span>)</span><span>(3)</span></span></span>+<span><span>(<span>−10</span>)</span><span>(x)</span></span></span>+<span><span>(<span>−10</span>)</span><span>(3)
</span></span></span></span><span>=<span><span><span><span>2<span>x2</span></span>+<span>6x</span></span>−<span>10x</span></span>−30
</span></span><span>=<span><span><span>2<span>x2</span></span>−<span>4x</span></span>−<span>30</span></span></span>
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