2 years ago

Find the quotient 7/9 divided by 5/6

Mathematics

1 answer:

Blizzard [7]2 years ago

3 0

7/9 divided by 5/6 = 14/15
in decimal for it would be 0.93

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from a window 24 feet above the ground, the angle of elevation to the top of another building is 38 degrees. The distance betwee

Delvig [45]

Answer:

The height of the building is $73.2\ ft$

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

In the right triangle ABC

$tan(38\°)=\frac{BC}{AB}$

we have

$AB=63\ ft$

substitute and solve for BC

$tan(38\°)=\frac{BC}{63}$

$BC=(63)tan(38\°)=49.2\ ft$

Find the height of the building

The height of the building (h) is equal to

$h=BC+24=49.2+24=73.2\ ft$

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2 years ago

What is the complete factorization of r2 - 6r - 9s2 + 9? A) (r - 3 + 3s)(r - 3 - 3s) B) (r + 3 + 3s)(r - 3 - 3s) C) (r - 3 + 3s)

nikitadnepr [17]

$r^2-6r-9s^2+9=r^2-6r+9-9s^2=r^2-2\cdot r\cdot3+3^2-9s^2\\\\\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\=(r-3)^2-9s^2=(r-3)^2-(3s)^2\\\\\text{use}\ a^2-b^2=(a-b)(a+b)\\\\=(r-3-3s)(r-3+3s)\to A$

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2 years ago

Solve the inequality x+2 1/2 >-1/2.graph the solution set on a number line. Show your work.

Ainat [17]

Answer:

x > -11

Step-by-step explanation:

The way fractions type on here are weird, so i typed it on a different website i think this is right though.

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1 year ago

Find the product. 1/2 - y (2y * 3 - 8) a) -y 4 + 4y b) y 4 + 4y c) -2y 3 + 4

aivan3 [116]

1/2 - y (6y - 8)
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the answer is A

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2 years ago

Perform the indicated operation. (-6)(4) 10 -10 24 -24

Ray Of Light [21]

Answer:

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Step-by-step explanation:

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7 0

2 years ago