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3 years ago

HELP PLS ASAP -3(3x - 5y - 9) + 7x + 7 =

2 answers:

6 0

Use the -69th rule when solving, it will eliminate any divisible invisible future prime numbers. That being said, your answer is infinity.

monitta3 years ago

6 0

Answer:

8..

Step-by-step explanation:

-3x-5y=61

7x-5y=-9

-10x=70

x=-7

y=-8..

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Helpppppppp

wel

The hypotenuse can be solved by this formula. X^2 = 6^2 +6^2

X^2=64
Usually you cut it down to 8 but it wants the squared form so 64.

6 0

3 years ago

PLEASE HELPP I WILL MARK YOU GOOD

djverab [1.8K]

Answer:

Volume: 41.643

Surface area: 119.04 (nearest tenth... I don't know...sorry)

Step-by-step explanation:

I didn't know if you need volume or surface area so you got both!

4 0

3 years ago

Two people are standing on opposite sides of a hill. Person A makes an angle of elevation of 65° with the top of the hill and pe

8090 [49]

Answer:

Option 3. 71 ft. is the distance between B and top of the hill.

Step-by-step explanation:

Let the height of the hill is h ft and the distance of A from the hill be x ft and distance from B to hill is y.

It is given distance between A and B is 45 ft. ∠BAO = 65° and ∠ABO = 80°.

We have to find the distance of B from the top of the hill.

Now from ΔACO $tan 65 = \frac{h}{45-x} = 2.14$

$h=2.14(45-x)$

From ΔBCO $tan80 = \frac{h}{x} = 5.67$

h = 5.67x

Now h = 5.67x = 2.14(45-x)

5.67x = 96.3 - 2.14x

2.14x + 5.67x = 96.3

7.81x = 96.3

x = 96.3/7.81 = 12.33 ft

Therefore $cos80 = \frac{x}{OB}$

$0.174 = \frac{12.33}{OB}$

$OB = \frac{12.33}{.174}=70.86=71ft.$

Therefore 71 ft is the distance between B and the top of the hill.

3 0

3 years ago

2.952 + 39.24 = A: 42.192 B: 68.76 C: 6.876 D: 687.6 E: 36.288 F: 42.76

kirill [66]

Answer:

The answer to this question is A

4 0

3 years ago

Read 2 more answers

PLS I NEED HELP ASAP THERE IS A TIMER

emmasim [6.3K]

Answer:

(0.4) . (0.1) = (0.04)

Step-by-step explanation:

6 0

2 years ago