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irina1246 [14]
3 years ago
12

N/-3 - 2 = 8 n=___ help

Mathematics
2 answers:
koban [17]3 years ago
8 0

Answer:

\frac{n}{ - 3}  - 2 = 8 \\  \frac{n}{ - 3}  = 8 + 2 \\  = 10 \\ n = 10 \times  - 3 \\ n =  - 30

lys-0071 [83]3 years ago
7 0

Answer:

-30

Step-by-step explanation:

\frac{N}{-3} -2 =8 ( Add 2 on both sides)

\frac{N}{-3} = 10 ( Multiply by -3 on both sides)

N = -30

<u>Verify:</u>

<u />\frac{-30}{-3} =10 (Correct<u>)</u>

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allsm [11]
Answer- 0.034090909090909, rounded is 0.034
4 0
3 years ago
Read 2 more answers
Solve for b.<br> 16 = a² + b^2
laiz [17]

Answer:

\sqrt{(4-a)(4+a)} =b

Step-by-step explanation:

16 = a^2 + b^2

16 - a^2 =b^2

4^2 - a^2 = b^2

\sqrt{4^2 - a^2} =b

\sqrt{(4-a)(4+a)} =b

7 0
2 years ago
A rectangular lawn, 100 feet long by 50 feet wide, is to have two sidewalks installed that will cut the lawn in half both ways,
Damm [24]

Answer:

3.41 feet

Step-by-step explanation:

Area = Length × Breath

Area of the rectangular lawn = 100 × 50

                                                = 5000 feet²

The sidewalk must occupy an area no more than 10% of the total lawn area.

So, the area of the sidewalk would be not more than  = 10% × 5000

                                                                                         = 0.10 × 5000

                                                                                        = 500 feet²

Let the width of the sidewalk = x feet

area of the side walk = (L×W of the long way) + ((L-x)×W of the short way)

(100 × x) + ((50 - x) × x) < 500

100x + (50-x)(x) < 500

-x²  + 150x < 500

-x² + 150x = 500

-x² + 150x - 500 = 0

By using quadratic formula

x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}

x=\frac{(-150)\pm\sqrt{(150)^2-4(-1)(-500)} }{2(-1)}

x=\frac{-150\pm \sqrt{20500} }{-2}

x=75-5\sqrt{205} or x=75+5\sqrt{205}

x = 3.41089 ≈ 3.41 feet  or  x = 146.58

Therefore, width of the sidewalk would be 3.41 feet.

5 0
3 years ago
Please help please cfgyy
Alenkinab [10]
3x- 11 +59 = 90
3x + 48 = 90
3x +48-48 =90-48
3x = 42
3x/3 = 42/3
x= 14

<MNQ = 3x -11
<MNQ = 3(14)-11
<MNQ = 42-11
<MNQ = 31
7 0
3 years ago
What is the coeficient of a+3b
stiks02 [169]

Answer:

The coefficient is 3

Step-by-step explanation:

The definition of a coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g. 4 in 4xy).

6 0
3 years ago
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