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borishaifa [10]
3 years ago
6

5(n+4)/3=n-8 A.-24 B.24 C.22 D.-22 PLEASE HELP

Mathematics
1 answer:
arsen [322]3 years ago
6 0

Start with

\dfrac{5(n+4)}{3} = n-8

Multiply both sides by 3:

5(n+4) = 3(n-8)

Expand both sides:

5n+20 = 3n-24

Subtract 3n from both sides:

2n+20 = -24

Subtract 20 from both sides:

2n = -44

Divide both sides by 2:

n = -22

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Each story of a building is 14.3 feet tall. If the height of the building is 185.9 feet, how many floors does the building have?
zvonat [6]

Answer:

D 13

Step-by-step explanation:

To find out how many floors the building has, we take the height of the building and divide by the size of each floor

floors = 185.9 ft / 14.3ft per floor

           = 13 floors

3 0
3 years ago
Read 2 more answers
: Cho tam giác ABC vuông tại C, trong đó AC = 0,9m, BC = 1,2m. Tính các tỉ số lượng giác của góc B, từ đó suy ra các tỉ số lượng
Xelga [282]

Answer:

Step-by-step explanation:

Vì tam giác ABC vuông tại C nên ta áp dụng định lí pitago=> AB²=AC²+BC²=0.9²+1.5²=3.06=>AB= (3 căn bậc hai của 34)/10

sin B=AC/AB=(3 căn bậc hai của 34)/34

cos B=BC/AB

tan B= AC/BC

cot B= BC/AC

Tương tự suy ra tỉ số lượng giác góc A

5 0
3 years ago
Franklin rode his bike 6 5/6 miles on Tuesday. He also rode his bike 5 5/6 miles on Thursday. What is the difference between the
11Alexandr11 [23.1K]
The difference = miles rode on Tuesday - miles rode on Thursday.
6 5/6 - 5 5/6 = 1 mile


3 0
4 years ago
Find the distance between the points. (Round your answer to two decimal places. (9.7, - 2.8), (- 3.2, 8.8)
Dmitry [639]

Answer:

Rounding it to two decimal places, we get distance, d=17.35

Step-by-step explanation:

Given:

The two points are (9.7, -2.8)\textrm{ and }(-3.2, 8.8)

The distance between the two points can be obtained using the distance formula which is given as:

d=\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

Here, for the points, (9.7, -2.8)\textrm{ and }(-3.2, 8.8)

x_{1}=9.7,x_{2}=-3.2,y_{1}=-2.8,y_{2}=8.8

Therefore, the distance between the points is:

d=\sqrt{(-3.2-9.7)^2+(8.8-(-2.8))^2}\\d=\sqrt{(-12.9)^2+(8.8+2.8)^2}\\d=\sqrt{(12.9)^2+(11.6)^2}\\d=\sqrt{166.41+134.56}\\d=\sqrt{300.97}=17.348

Rounding it to two decimal places, we get d=17.35

7 0
3 years ago
3. To buy a car, Jessica borrowed $15,000 for 3
elena55 [62]
A)15000 x (9 : 100) x 3 = 4050
B) 15000 + 4050 = 19050

I hope it is correct ❤️
7 0
3 years ago
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