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3 years ago

2x^2+x=4 How do you determine the solution

Mathematics

1 answer:

zepelin [54]3 years ago

4 0

Answer:

8²+4

16+4

if not 16 do 64

answer would eithaa be 68 or 20

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Answer ASAP 15 points

malfutka [58]

A or 5/7, they’re both odd numbers so it cannot be simplified any further

8 0

3 years ago

A cylindrical swimming pool has a diameter of 20 feet and a height of 3.5 feet. How many gallons of water can the pool contain?

kvasek [131]

Answer:

The swimming pool will contain approx $8243\ gal$ of water.

Step-by-step explanation:

Given the swimming pool is in a cylindrical shape.

And the dimensions are $20\ feet$ diameter with a height of $3.5\ feet.$

Also, $1\ ft^3 =7.5\ gal$

First, we will find the volume of the swimming pool.

The swimming pool is in cylindrical shape.

So, the volume would be $\pi r^2h$

The height $(h)$ is given as $3.5\ feet.$ To calculate radius $(r)$ we will divide the diameter by two.

The radius of the cylinder would be $\frac{20}{2}=10\ feet$

Plug these values in the formula we get,

$\pi r^2h\\=\pi\times 10^2\times 3.5\\=3.14\times 100\times 3.5\\=1099\ ft^3$

Now, it is given $1\ ft^3 =7.5\ gal$

So, $1099\ ft^3 =1099\times 7.5\ gal=8242.5\ gal$

The swimming pool will contain approx $8243\ gal$ of water.

6 0

3 years ago

Which of the value of x satisfies the equation below -2x-7=12

Masteriza [31]

Answer is A.
You start by adding the 7 to the opposite side. Giving you 19. You divide both sides by -2 which gives you x on one side and -9.5 on the other.

-2x-7=12
-2x=12(+7)
-2x=19
x=19/-2
x=-9.5

8 0

3 years ago

Help Please!<br>parallel and perpendicular lines

e-lub [12.9K]

For what problem
Answer pls

5 0

3 years ago

Read 2 more answers

Rewrite 8 1/2 as an improper fraction

g100num [7]

Answer:

17/2

Step-by-step explanation:

8 × 2 = 16 adding 1 = 17

3 0

3 years ago