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dedylja [7]
3 years ago
10

This the questions that have me stuck​

Mathematics
1 answer:
IRINA_888 [86]3 years ago
4 0
First a and then b.
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What is (4x + 2) - (2x + 1)?
daser333 [38]
2x + 1

You can find that by switching the signs in the second set of parenthesis and then adding. 
7 0
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When I think of a number, double it, then add seven, I get 25. what number did I think of?
sweet [91]

Answer:

9

Step-by-step explanation:

25-7=18

half of 18 is 9

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3 years ago
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I’ll give brainest just help
DENIUS [597]

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B

Step-by-step explanation:

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2 years ago
Find the tangent ratio of angle O. Hint: Use the slash symbol (/) to represent the fraction bar, and enter the fraction with no
katovenus [111]
Answer: Tan(0) = 4/3

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Tan = Opposite/ Adjacent
Tan (0) = 4/3
7 0
2 years ago
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Given that Cosecant (t) = negative StartFraction 13 Over 5 EndFraction for Pi less-than t less-than StartFraction 3 pi Over 2 En
Sergio [31]

Answer:

\bold{cot(t) =\dfrac{12}{5}}

Step-by-step explanation:

Given that:

Cosec (t) = -\frac{13}5

for \pi < t < \frac{3 \pi}2

That means, angle t is in the 3rd quadrant.

To find:

Value of cot(t)

Solution:

First of all, let us recall what trigonometric ratios are positive and what trigonometric ratios are negative in 3rd quadrant.

In 3rd quadrant, tangent and cotangent are positive.

All other trigonometric ratios are negative.

Let us have a look at the following identity:

cosec^2\theta -cot^2\theta =1

here, \theta =t

So, cosec^2t-cot^2t=1

\Rightarrow (-\dfrac{13}{5})^2-cot^2t=1\\\Rightarrow (\dfrac{169}{25})-cot^2t=1\\\Rightarrow \dfrac{169}{25}-1=cot^2t\\\Rightarrow \dfrac{169-25}{25}=cot^2t\\\Rightarrow \dfrac{144}{25}=cot^2t\\\Rightarrow cot(t)=\pm\sqrt{\dfrac{144}{25}}\\\Rightarrow cot(t)=\pm\dfrac{12}{5}

But, angle t is in 3rd quadrant, so value of

\bold{cot(t) =\dfrac{12}{5}}

4 0
3 years ago
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