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adoni [48]
3 years ago
12

Question 11(Multiple Choice Worth 1 points) (07.01 MC) The picture shows a barn door: A barn door has two parallel bars, each of

length 4 feet. A support AB runs across the diagonal between the two parallel bars. The angle made by the diagonal with the parallel bar on top is 45 degrees.
Mathematics
2 answers:
WINSTONCH [101]3 years ago
6 0
Hypotenuse= 9/sin 60=10.39 ft.
the length of the support AB is 10.39 ft.
SOVA2 [1]3 years ago
6 0

Answer:

The answer is 7/sin45 degrees

Step-by-step explanation:

I took the test and got it right.

The options were:

A.) 7/cos 45-degrees

B.) 7 tan 45-degrees

C.) 7/sin 45-degrees

D.) 7 cos 45-degrees

C will be your answer :)

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Simple drawing shows that measure interior angle at B is 25 degrees.

Easily seen from a drawing are that measure of angle CBD is 25 degrees, and measure of angle CAD is 65 degrees (which was already given).

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Step-by-step explanation:

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Solve the following system of equations and show all work.<br> y = 2x^2 +9x<br> y = 4x + 25
Genrish500 [490]

Answer:

x = 5/2 thì y = 35 và x = -5 thì y = 5

Step-by-step explanation:

thay y = 4x + 25 vào phương trình y = 2x ^ 2 + 9x ta có:

4x + 25 = 2x ^ 2 + 9x

⇒2x ^ 2 + 5x - 25 = 0

⇒ x = 5/2 và x = -5

thay x = 5/2 vào phương trình y = 4x + 25 ⇒ y = 4*(5/2) + 25 = 35

thay x = -5 vào phương trình y = 4x + 25 ⇒ y = 4*(-5) + 25 = 5

7 0
3 years ago
What's (7 x 100) + (4 x /100) + (8 x 1/1000) in standard form?
IceJOKER [234]

Answer:

(7*100) can be written as 7*10^2

4 * / 100 i don’t know

if it was 4 * 100 then it’s 4*10^2

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