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3 years ago

15 points. Need help with this math test

Mathematics

1 answer:

laiz [17]3 years ago

5 0

Answer:

por fa en español no entiendo ingles

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For an acute angle 0, the equation sin(0) = cos(6) is true. What is the value of ? Show or explain your answer

weqwewe [10]

Answer:

$\theta =84$

Step-by-step explanation:

Given

$sin(\theta) = cos(6)$

Required

Find $\thata$ $\theta$

In trigonometry:

If sin(A) = cos(B), then

$A + B = 90$

So, we have:

$\theta + 6 = 90$

Collect Like Terms

$\theta + 6 -6= 90-6$

$\theta = 90-6$

$\theta =84$

6 0

3 years ago

Which of the following possibilities will form a triangle?

Alenkinab [10]

I think the answer is A but I could be wrong

4 0

3 years ago

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What is the equation of the line i slope intercept form of the line passing throughoints (-5, -2)) and (3,-14).

Paraphin [41]

STEP 1

Write out the formula needed

$\begin{gathered} m=\frac{y_2-y_1}{x_2-x_1} \\ \text{Also, m=}\frac{y_{}-y_1}{x_{}-x_1} \end{gathered}$

STEP 2

Equate both equations together then substitute the values of the points into the equation.

$\begin{gathered} \frac{y_2-y_1}{x_2-x_1}=\frac{y_{}-y_1}{x_{}-x_1} \\ \frac{-14-(-2)}{3-(-5)}=\frac{y-(-2)}{x-(-5)} \\ \frac{-14+2}{3+5}=\frac{y+2}{x+5} \\ -\frac{12}{8}=\frac{y+2}{x+5} \\ -\frac{3}{2}=\frac{y+2}{x+5} \\ \text{Cross multiply} \\ -3(x+5)=2(y+2) \\ -3x-15=2y+4 \\ 2y=-3x-15-4 \\ 2y=-3x-19 \\ \text{Divide both sides by 2} \\ y=-\frac{3x}{2}-\frac{19}{2} \end{gathered}$

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10 months ago

The markup at Total Jewelry is 70%. If the wholesale price of a necklace is $130, what will the store charge as the retail price

o-na [289]

The answer is c.

I took 130 and multiplied by 1.7 (.7 because of the mark up and 1 because I don't want to add the original back to the answer) and I got 221

You could also take 130 times .7 then add 130 to get the same answer.

I hope this helps.

3 0

3 years ago

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Help help please thanks

Helen [10]

it is c or b but i think c it is not b

3 0

2 years ago