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timama [110]
4 years ago
15

Need help with these 3 questions (giving brainiest if you can answer with equations)

Mathematics
1 answer:
Tpy6a [65]4 years ago
8 0

Problem 10

<h3>Answer: approximately 57.39159 km</h3>

Explanation: You'll use the equation cos(28) = d/65 to solve for d to get d = 65*cos(28) = 57.39159 approximately. We use the cosine ratio because it ties together the adjacent and hypotenuse.

=====================================

Problem 11

<h3>Answer: approximately 10.46162 meters </h3>

Explanation: This time we use the sine rule. We have the height as the opposite side (which is unknown, call it x) and the hypotenuse is the ladders length (11). So we have sin(72) = x/11 which solves to x = 11*sin(72) = 10.46162

=====================================

Problem 12

<h3>Answer: approximately 16.05724 cm</h3>

Explanation: Now we use the tangent rule to connect the opposite and adjacent sides.

tan(37) = 12.1/x

x*tan(37) = 12.1

x = 12.1/tan(37)

x = 16.05724 approximately

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Which is greater? -7 or -6?
Elenna [48]

When discussing "greater" and "lesser", the term "greater" means
'more positive'. So although 7 is a bigger number than 6 ... that is
7 has the bigger absolute value ... -6 is more positive than -7, so
-6 is the 'greater' of those two numbers.

8 0
3 years ago
Shawna got a manicure for $22 she left an 18% tip for the manicurist. what is the total amount that she paid?
Morgarella [4.7K]

Answer:

$25.96

Step-by-step explanation:

So Shawna's manicure was $22 dollars, and she left and 18% tip. In other words, she added 18%, or 0.18 to the total original price. We can represent this with an expression:

1.18 * 22

As she pays 100%, or 1, plus another 18%, or 0.18 to the original price of $22.

Thus her total amount was $25.96

Hope this helps!

8 0
3 years ago
Read 2 more answers
I need help with this if you do thank you so much!!!???
elena-s [515]
4 chairs. He makes 20 dollars profit on each chair but it takes 4 chairs (80 dollars of profit ) to cover the 75 dollar fee of the booth
4 0
3 years ago
Seven more than the product of twenty eight and thirty one
Mariulka [41]
The equation should look like this: (28*31)+7= 875

Unless i've completely misunderstood the basis of the equation. 
6 0
3 years ago
Need help on question 15
NARA [144]

Answer:

A. 16/36

B. 28/36

C. 24/36

D. 8/36

Step-by-step explanation:

Above I have the probability chart. Their are 36 students so that’s the ’out of’ thing I used, for instance, Answer A:  the probability of you meeting a student who only eats lunch is: 16 out of 36 (16 students who eat lunch, while 36 altogether.)

I wish you luck on this homework!!!!

5 0
3 years ago
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