All categories

3 years ago

Need help due tonight!!

Mathematics

2 answers:

blagie [28]3 years ago

8 0

Answer:

h = 80

Step-by-step explanation:

Remark

The general Volume formula for a pyramid is V = 1/3 * B * h

Givens

base edge = 3 m

V = 240 m^2

Solution

V = 1/3 * B * h

B = s^2

B = base edge^2

B = 3^2

B = 9

240 = 1/3 * 9 * h multiply by 3

240 * 3 = 9 h Divide by 9

80 = h

Nuetrik [128]3 years ago

8 0

Yes the height is 80^^.

You might be interested in

A car starts with a dull tank of gas. After driving around 5he city, 1/7 of the gas has been used. With the rest of the gas in t

Sati [7]

Answer:

$\frac{2}{7}$

Step-by-step explanation:

Given:

A car starts with a dull tank of gas

1/7 of the gas has been used around the city.

With the rest of the gas in the car, the car can travel to and from Ottawa three times.

Question asked:

What fractions of a tank of gas does each complete trip to Ottawa use?

Solution:

Fuel used around the city = $\frac{1}{7}$

Remaining fuel after driving around the city = 1 - $\frac{1}{7}$

= $\frac{7 - 1}{7} = \frac{6}{7}$

According to question:

As from the rest of the gas in the car that is $\frac{6}{7}$ , the car can complete 3 trip to Ottawa which means,

By unitary method:

The car can complete 3 trip by using = $\frac{6}{7}$ tank of gas.

The car can complete 1 trip by using = $\frac{6}{7} \div 3$

= $\frac{6}{7} \times\frac{1}{3}$

= $\frac{6}{21}$

= $\frac{2}{7}$ tank of gas

Thus, $\frac{2}{7}$ tank of gas used for each complete trip to Ottawa.

5 0

3 years ago

The hypotenuse of a right triangle is 10cm long. The longer leg is 2cm longer than the shorter leg. Find the side lengths of the

Crazy boy [7]

We need Pythagoras theorem here
a^2+b^2 = c^2
a, b = legs of a right-triangle
c = length of hypotenuse

Let S=shorter leg, in cm, then longer leg=S+2 cm
use Pythagoras theorem
S^2+(S+2)^2 = (10 cm)^2
expand (S+2)^2
S^2 + S^2+4S+4 = 100 cm^2 [collect terms and isolate]
2S^2+4S = 100-4 = 96 cm^2
simplify and form standard form of quadratic
S^2+2S-48=0
Solve by factoring
(S+8)(S-6) = 0 means (S+8)=0, S=-8
or (S-6)=0, S=6
Reject nengative root, so
Shorter leg = 6 cm
Longer leg = 6+2 cm = 8 cm
Hypotenuse (given) = 10 cm

5 0

2 years ago

What is the percent of 53 out of 191 people

Tomtit [17]

Answer:

101.23

Step-by-step explanation:

Go to https://percentagecalculator.net and enter it!

6 0

3 years ago

How is 2y(z(z+5)+10) gotten from 2yz^2 +10yz +20y ? Please help!!!

Harrizon [31]

Answer:

Adding like terms! Hope this Helps!

6 0

2 years ago

A cube has a side length of 4 feet. What is the volume of the cube?

riadik2000 [5.3K]

Answer:

64 square ft^3

Step-by-step explanation:

If the side lengh is 3 then you would have 4^3 which is 64.

5 0

2 years ago

Read 2 more answers