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3 years ago

Pleses help me thank you

Mathematics

1 answer:

OLEGan [10]3 years ago

4 0

when solving for y

y = -7x/3-6

so y does not vary directly with x

the answer is no

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Please help me I don’t understand this question and it’s a quiz

Taya2010 [7]

Answer:

7+2+2

Step-by-step explanation:

6 0

3 years ago

It took John 12 hours riding his bike to make the round trip to his uncle's. If he averaged 20 mph out and 30 mph back, how long

notsponge [240]

Answer:

Step-by-step explanation:

Let the time taken by the john to get to his uncle be x.

Let the time taken by the john to get back from his uncle be y.

So,

x+y=12 ------ equation 1

According to the given velocities:

20x=30y

x=3/2y

Put the value x=3/2y in equation 1

3/2y+y =12

3y+2y/2=12

3y+2y=12*2

5y=24

y=24/5

y=4.8h

Now put the value of y in x=3/2y

x=3/2*4.8

x=14.4/2

x=7.2h ....

6 0

3 years ago

A pyramid has a square base with sides of length s. The height of the pyramid is equal to - of the length of a side on the base.

Vera_Pavlovna [14]

<h3><u>Question:</u></h3>

A pyramid has a square base with sides of length s. The height of the pyramid is equal to 1/2 of the length of a side on the base. Which formula represents the volume of the pyramid?

<h3><u>Answer:</u></h3>

<em><u>The formula represents the volume of the pyramid is:</u></em>

$V=\frac{1}{6}s^3$

<h3><u>Solution:</u></h3>

<em><u>The volume of square pyramid is given by formula:</u></em>

$V = \frac{1}{3} a^2h$

Where, "h" is the height of pyramid

"a" is the length of side of base

Here given that, pyramid has a square base with sides of length s

Therefore,

a = s

The height of the pyramid is equal to 1/2 of the length of a side on the base

$h = \frac{1}{2} \times s\\\\h = \frac{s}{2}$

<em><u>Thus the volume of pyramid becomes:</u></em>

$V = \frac{1}{3} \times s^2 \times \frac{s}{2}\\\\V = \frac{s^3}{6}$

$\boxed{V=\frac{1}{6}s^3}$

Thus the formula represents the volume of the pyramid is $\frac{s^3}{6}$

5 0

3 years ago

Please Help ASAP!! Marking Brainliest!! Divide <img src="https://tex.z-dn.net/?f=12x%5E2%20%2B%204x%5E3%20%2B%2018%20%2B%2016x"

MrMuchimi

Answer:

The answer is C

Step-by-step explanation:

Just calculate it

4 0

3 years ago

the perimeter of a rectangular garden is 84 feet. write and solve the system of equations that can be used to find the dimension

scoray [572]

Answer:

The length is 22.5 and the width is 19.5

Step-by-step explanation:

2L + 2W = P

2L + 2W = 84

W + 3 + W + 3 + W + W= 84

4W + 6 = 84

4W = 78

W = 19.5 L = 19.5 + 3 = 22.5

I hope this helps, have a nice day! :D

6 0

3 years ago