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3 years ago

Two angles are complementary. If on angle measures 71 degrees, what is the measure of the second angle

Mathematics

2 answers:

Diano4ka-milaya [45]3 years ago

7 0

39 degrees angle... :)

nekit [7.7K]3 years ago

7 0

A complementary angle adds up to 90° so 90-71=19°

Hope this helps ;)

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FOLLOW MY TWITCH zolvitic

Lera25 [3.4K]

Answer:

i dont have twitch rn but when i do i have ur acoount in mind

Step-by-step explanation:

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3 years ago

What is the solution of the system? y=9x-2 y=7x+3

Sonja [21]

What is the solution of the system? y=9x-2 y=7x+3

b.(5/2,41/2)

The table below shows the height (in inches) and weight (in pounds)of eight basketball players.
Height=67, 69, 70, 72, 74, 78, 79 Weight=183, 201, 206, 240, 253, 255 what is the correlation of the set of data? Round your answer to the nearest thousandth.

d.0.981

3.The table below shows the average height of a species of tree (in feet) after a certain number of years.
Years=1, 2, 3, 4, 5, 6, 7, 8 Height=2.1, 3.2, 6.8, 7.3, 11.2, 12.6, 13.4, 15.9 about how tall would you expect one of these trees to be after 22 years?

c.44.25ft

4.You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is 0.984. How confident can you be that your predicted value will be reasonably close to the actual value?

c.I can be very confident; it will be close, but it probably won't be exact.

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3 years ago

I WILL MARK BRINLIEST

lisov135 [29]

Answer:

bicycle 24 x2= 48

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Step-by-step explanation:

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3 years ago

Tim must read 2 books from a list of 7 recommended books for his summer reading program. In how many different ways can Tim choo

Marianna [84]

There are 21 ways Tim choose 2 books from the 7 recommended book

Solution:

Given that Tim must read 2 books from a list of 7 recommended books for his summer reading program

To find: different ways can Tim choose 2 books from the 7 recommended books

This is a combination problem

A combination is a selection of all or part of a set of objects, without regard to the order in which objects are selected

The formula for combinations is:

$n C_{r}=\frac{n !}{r !(n-r) !}$

where n represents the number of items, and r represents the number of items being chosen at a time

Here we have to choose 2 books from 7 books

Therefore, n = 7 and r = 2

Substituting values in above formula, we get

$\begin{aligned}&7 C_{2}=\frac{7 !}{2 !(7-2) !}\\\\&7 C_{2}=\frac{7 !}{2 ! \times 5 !}\end{aligned}$

For a number n, the factorial of n can be written as,

$n !=n \times(n-1) \times(n-2) \dots \dots \times 2 \times 1$

Therefore, we get

$7 C_{2}=\frac{7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1}{2 \times 1 \times 5 \times 4 \times 3 \times 2 \times 1}\\\\7C_2 = 7 \times 3 = 21$

Thus there are 21 ways Tim choose 2 books from the 7 recommended book

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3 years ago

What percentage of Coach passengers did not check bags

Andreyy89

Answer:

Step-by-step explanation:

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4 years ago