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3 years ago

For brainiest:):):):):):)

Mathematics

1 answer:

tresset_1 [31]3 years ago

3 0

I would say B..............

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Please help with this

kotykmax [81]

Answer:

A. x = 5, -3

Step-by-step explanation:

The quadratic equation/formula is:

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

The setup is:

$ax^2+bx+c=0$

$4x^2 - 8x -60=0$

Plug in the numbers according to the letter associated:

$x = \frac{8+-\sqrt{-8^2-4(4)(-60)} }{2(4)}$

$x = \frac{8+-\sqrt{1024} }{8}$

$x = \frac{8+-32}{8}$

Solve for addition and subtraction:

$x = \frac{8+32}{8}$ $x = \frac{8-32}{8}$

$x = \frac{40}{8}$ $x = \frac{-24}{8}$

x = 5 x = -3

4 0

3 years ago

Which one pls HELP PLSSSS

Dafna11 [192]

Answer:

Its the first one

Step-by-step explanation:

5(x+y)

-8x

4 0

3 years ago

Read 2 more answers

You have an aquarium in the shape of a rectangular prism. The base is 4 feet by 3 feet. The height is 2 feet. How many square fe

fiasKO [112]

Since it is about only the outer part of the aquarium which is made of glasses we need to calculate the total surface area.

Surface area of the base = 4*3 = 12 square feet

Surface area of the shorter length of wall = 3*2 = 6 square feet
since it has another wall in opposite side. It has to be multiplied with 2.
6*2 = 12 square feet

Surface area of the longer length of wall = 4*2 = 8 square feet
since it has another wall in opposite side. It has to be multiplied with 2.
8*2 = 16 square feet

Therefore the total surface area that need to be covered with glasses
12+12+16 = 40 square feet

6 0

3 years ago

Please take a look at the picture for question

andrey2020 [161]

A

hope i made your day

7 0

3 years ago

5/21 as a decimal rounded to 3 decimal places

Charra [1.4K]

<h2> ~Solution :-</h2>

Here, we know that,

$\frac{5}{21} \\$