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3 years ago

6

You place a ladder against the top of a 18-foot building. The bottom of the ladder is 8.5 feet from the bottom of the building.

How long is the ladder? Show your work for full credit.

1 answer:

Kruka [31]3 years ago

8 0

Answer: 26.5 feet

Step-by-step explanation:

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Find the population variance and standard deviation.<br> 8, 17, 29, 35, 41

anyanavicka [17]

Answer:

53

Step-by-step explanation:

By taking the number "41" and minus it with "35" and you'll get 12. Take the number "12" and plus with "41" and you'll get the answer.

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3 years ago

One 50 pound of grass seed is enough to seed 10,000 square feet of ground. If your lawn is 400 feet by 285 feet how many package

marshall27 [118]

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4 years ago

Solve ABC <br>c=10, B=35°, C=65%

NISA [10]

Answer:

Part 1) The measure of angle A is $A=80\°$

Part 2) The length side of a is equal to $a=10.9\ units$

Part 3) The length side of b is equal to $b=6.3\ units$

Step-by-step explanation:

step 1

Find the measure of angle A

we know that

The sum of the internal angles of a triangle must be equal to 180 degrees

so

$A+B+C=180\°$

substitute the given values

$A+35\°+65\°=180\°$

$A+100\°=180\°$

$A=180\°-100\°=80\°$

step 2

Find the length of side a

Applying the law of sines

$\frac{a}{sin(A)}=\frac{c}{sin(C)}$

substitute the given values

$\frac{a}{sin(80\°)}=\frac{10}{sin(65\°)}$

$a=\frac{10}{sin(65\°)}(sin(80\°))$

$a=10.9\ units$

step 3

Find the length of side b

Applying the law of sines

$\frac{b}{sin(B)}=\frac{c}{sin(C)}$

substitute the given values

$\frac{b}{sin(35\°)}=\frac{10}{sin(65\°)}$

$b=\frac{10}{sin(65\°)}(sin(35\°))$

$b=6.3\ units$

5 0

3 years ago

What is equivalent to — 19 — 11

satela [25.4K]

Answer:

-30 ?

Not really sure what you mean by that but, -19-11= -30 is all I know.

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3 years ago

D is the centroid. Find Q D if DK =6.5.

Xelga [282]

Answer:

QD = 13

Step-by-step explanation:

According to the Centroid theorem of a triangle, the Centroid is ⅔ of the distance from every vertex angle to the midpoint of the side opposite to each of them.

By this we can deduce that:

QD = ⅔(QD + DK)

Substitute

QD = ⅔(QD + 6.5)

Multiply both sides by 3

3*QD = 2(QD + 6.5)

3QD = 2QD + 13

Subtract both sides by 2QD

3QD - 2QD = 13

QD = 13

3 0

3 years ago