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3 years ago

Sin 20 = cos a Find aPlease be sure to show your work.

Mathematics

1 answer:

mezya [45]3 years ago

8 0

Answer:

Step-by-step explanation:

cos a=sin20=sin (90-70)=cos 70

a=70°

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Darren is finding the equation in the form y = m x b for a trend line that passes through the points (2, 18) and (–3, 8). Which

Lera25 [3.4K]

B is consider to be the y-intercept. If you plot those two points and draw a line connecting the two. The line would go through (0,14). Making 14 the y-intercept and the correct answer.

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2 years ago

to gather data for a statistics project, a student asked 10 friends how many hours of sleep they got on the previous night. The

vovikov84 [41]

Answer:

Step-by-step explanation:

Given the data: 7 6 5 9 3 4 7 9 5 8

INTERQUARTILE RANGE (IQR) = Q3 - Q1

Rearranging the data: 3, 4, 5, 5, 6, 7, 7, 8, 9, 9

Q3 = 0.75(n+1)th term

Q3 = 0.75(10 + 1) th term

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4 years ago

The salsa recipe uses green pepper, onion and tomato in the extended ration 3:7:11. How many green peppers are needed to make 18

jeka94

It's just ratio ,

so 3x+7x+11x=189
so, 21x=189
x=9

therefore green pepper= 3x=3×9=27

so the answer is B and you can go for that !

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3 years ago

Read 2 more answers

Quadrilateral ABCD is a a square and the length of BE is 6 cm.<br><br>What is the length of AC?

Aloiza [94]

The answer is: 12 centimeters.

The explanation is shown below:

1. By definition, all four sides of the square are equal and the diagonals are equal too.

2. Keeping the information above on mind, you know that AC and BD are equal:

$AC=BD$

3. Then, the length of BD is twice BE. So, you can calculate it as following:

$BD=2BE$

$BD=2(6cm)\\BD=12cm$

4. Therefore, the lenght of AC is:

$AC=12cm$

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4 years ago

You are asked to draw a triangle using three of the following angles: 0°, 30°, 45°, 55°, 60°, 80°, 90°, 105°. Which triangle can

mart [117]

The answer is D. All you have to do is add all of the angles for each choice you're given. It has to add up to exactly 180, because every triangle is 180 degrees.

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3 years ago

Sin 20 = cos a Find aPlease be sure to show your work.​

Sin 20 = cos a Find aPlease be sure to show your work.