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Vikki [24]
2 years ago
14

9n · 5n · 8 with work to show

Mathematics
1 answer:
valina [46]2 years ago
6 0

Answer:

360 is answer

Step-by-step explanation:

45n.8

360n

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5 x 20 x a³ = 72900 what does a equal
Basile [38]

Answer:

9

Step-by-step explanation:

a^3=72900/100

a=(729)^1/3

a=9

3 0
3 years ago
Define a variable, write an inequality, and solve each problem. Check your solution.
grandymaker [24]

Answer:

Step-by-step explanation:

7 0
3 years ago
How to solve 45y to the second power plus 15y minus 10 ?
Lerok [7]

Answer:

Either y =\frac{-2}{3} or, y =\frac{1}{3}

Step-by-step explanation:

We have to solve the following quadratic equation  

45y² + 15y - 10 =0

Now, dividing both sides with 5 we get, 9y² + 3y -2 =0

Hence, to solve the above equation we have to factorize the left-hand part of the equation.

So, 9y² + 3y - 2 =0

⇒ 9y² +6y -3y -2 =0

⇒ (3y +2) (3y -1 ) =0

⇒ Either (3y +2) =0 or (3y -1) =0

⇒ Either y =\frac{-2}{3} or, y =\frac{1}{3} (Answer)

4 0
3 years ago
A rectangular swimming pool is twice as long as it is wide. A small concrete sidewalk surrounds the pool and is a constant 2 fee
Naddika [18.5K]

Answer:

The dimensions of the pool are:

Width: 8.944 feet

Length: 17.888 feet

Step-by-step explanation:

From Geometry, the area of a rectangle (A), measured in square feet, is determined by the following equations:

A = w\cdot l (1)

Where:

w - Width, measured in feet.

l - Length, measured in feet.

If we know that w = x, l = 2\cdot x and A = 160\,ft^{2}, then we get the following second order polynomial:

2\cdot x^{2}-160 = 0 (1)

And we solve the expression for x:

2\cdot x^{2} = 160

x^{2} = 80

x = \sqrt{80}\,ft

x \approx 8.944\,ft

Then, the dimensions of the pool are, respectively:

w \approx 8.944\,ft and l \approx 17.888\,ft

5 0
3 years ago
HELP PLSSS THIS IS HARD SOMEONE
mariarad [96]

Answer:

The 4th option

Step-by-step explanation:

Mark me as brainliest please

5 0
3 years ago
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