2 years ago

What is the value of the angle marked with xxx?

Mathematics

1 answer:

Mice21 [21]2 years ago

5 0

I have no clue what to answer 9

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The product of 9 and a number is 12 less than three times that number. What is the number?

Murrr4er [49]

X - a number

$9x=3x-12|-3x\\ 6x=-12|:6\\
x=-2

$

8 0

3 years ago

155%of 80 is what number

brilliants [131]

Recall that the conversion of 155% to decimal is to divide by 100. Thus, 155%=1.55.

Now, multiply this by 80: $1.55 * 80=124$

So our answer is 124.

8 0

3 years ago

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How to solve this equation 18.5 = -4.5 + 7(k + 6)

yawa3891 [41]

1. Add -4.5 to 18.5
2. Divide 23 by 7
3. Then subtract 6 from -2.7

8 0

3 years ago

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Help pleaseeee- it’s for an assessment :/

rusak2 [61]

Answer:

y=2x+0

Step-by-step explanation:

8 0

3 years ago

Help with trigonometry

Oksanka [162]

Answer:

○B. $\frac{\sqrt{6}}{2}$

Step-by-step explanation:

Trigonometric Identities

$\frac{y}{r} = sin\:θ$

$\frac{x}{r} = cos\:θ$

$\frac{y}{x} = tan\:θ$

$\frac{r}{x} = sec\:θ$

$\frac{r}{y} = csc\:θ$

$\frac{x}{y} = cot\:θ$

Radius Formula

${y}^{2} + {x}^{2} = {r}^{2}$

${[-\sqrt{15}]}^{2} + {[-\sqrt{10}]}^{2} = {r}^{2} → 15 + 10 = {r}^{2} → 25 = {r}^{2}\\ \\ 5 = r$

* Since we are talking about radii, we only want the NON-NEGATIVE root.

In this case, we will not be using the radius in our ratio, according to the trigonometric identity above because we are using the tangent ratio:

$\frac{\sqrt{6}}{2} = \frac{-\sqrt{15}}{-\sqrt{10}} = \sqrt{1\frac{1}{2}}$

I am joyous to assist you anytime.

4 0

3 years ago