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Dominik [7]
3 years ago
14

Please help me :(.....

Mathematics
1 answer:
monitta3 years ago
7 0

Answer:

the answer is C.........

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If you had a 15 foot ladder, how far away from the base of a wall would you have to put it to reach a window 12 feet up?
Kruka [31]

Answer:

9.000000001

Step-by-step explanation:

If the hypotenuse is  15, the ladder, facing the right angle, and the opposite is 12 we need to use SOH to find the angle.

sin of angle is opposite / hypotenuse

sin of angle is 12 / 15

12/15 = 0.8

sin^-1 of 0.8 = 53.13010235

Angle is that

Then we do this again but a different equation

cos of angle is adjacent (x which we are looking for) / hypotenuse

cos of 53.13... is x / 15

(15 x cos of 53.13... )is x

So 15 x cos of 53.13... is 9.000000001 feet away.

5 0
2 years ago
Complete the table with the number of sit-ups you have to do sunday so that the mean number of sit-ups per day is 100
marissa [1.9K]

The mean is the average of the numbers.

It is easy to calculate: add up all the numbers, then divide by how many numbers there are.

Let the number of sit-ups you have to do Sunday be x. Then the sum of all sit-ups is

100+65+120+150+90+0+x=525+x.

The number of days is 7.

Thus, the mean is

\text{mean}=\dfrac{525+x}{7}.

You know that the mean number of sit-ups per day is 100, equate these two means and solve the equation:

\dfrac{525+x}{7}=100,\\ \\525+x=700,\\ \\x=700-525,\\ \\x=175.

Answer: 175 sit-ups

5 0
2 years ago
How many solutions does this system have 2x + y = -1 -4x - 2y = -5
postnew [5]
5. There’s your answer buddy
6 0
3 years ago
Determine the type of triangle that is drawn below. PLZZ ASAP
Vitek1552 [10]

Answer:

saclene obtuse

Step-by-step explanation:

sides all different and one angles is obtuse

6 0
2 years ago
Rational numbers-oh my!
Anna [14]
What is the question can't help with ought it
8 0
3 years ago
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