1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pychu [463]
3 years ago
7

PLZ ANSWER 75 POINTS FAST!!!!!!!!!!!!!!!!

Mathematics
2 answers:
Contact [7]3 years ago
5 0

Answer:

6 inches

Step-by-step explanation:

The volume of a triangular pyramid can be found using

v=1/3bh

where b is the area of the base, and h is the height

We know the volume is 12, so let's find the area of the base

The area of a triangle can be found using:

a=bh/2

We know the base is 4, and the the height is 3, so we can substitute them in

a=4*3/2

a=12/2

a=6

Now, we can solve for the height

v=1/3bh

Substitute 12 in for v, and 6 in for b

12=1/3(6h)

Multiply both sides by 3

3*12=1/3(6h)*3

36=6h

Divide both sides by 6

h=6

The height is 6 inches

german3 years ago
4 0

First, find the area of the base of the pyramid.

A = (4)(3)/2

A = 12/2

A = 6in²

Second, solve for h in the volume formula [ V = 1/3bh ]

12 = 1/3(6)(h)

12 = 2h

12/2 = 2h/2

6 = h

Therefore, the answer is 6 inches.

Best of Luck!

You might be interested in
The area of a rectangle is 4x+32. The length is 4. Find the width.
marissa [1.9K]

\bf \textit{area of a rectangle}\\\\ A=Lw~~ \begin{cases} L=length\\ w=width\\[-0.5em] \hrulefill\\ A=4x+32\\ L=4 \end{cases}\implies 4x+32=4w \\\\\\ \cfrac{4x+32}{4}=w\implies \cfrac{~~\begin{matrix} 4 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ (x+8)}{~~\begin{matrix} 4 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}=w\implies \boxed{x+8=w}

7 0
4 years ago
Caleb wants to work as a dog walker. One client offers him $10 per day to walk his dog Puff, and wants Caleb to walk Puff every
aksik [14]

Answer:

he will earn more from walking Puff

Step-by-step explanation:

if he is walking Puff for ten dollars 7 days a week, thats 70 dollars.

the other dog would get him 60 dollars a week.

8 0
3 years ago
Identify whether the problem is a percent increase or a percent decrease. Your $1000 investment earned 5% interest.
wolverine [178]

Answer:

Precent Increase

Step-by-step explanation:

8 0
3 years ago
The length of human pregnancies from conception to birth varies according to an approximately normal distribution with a mean of
Varvara68 [4.7K]

Answer:

A) 68.33%

B) (234, 298)

Step-by-step explanation:

We have that the mean is 266 days (m) and the standard deviation is 16 days (sd), so we are asked:

A. P (250 x < 282)

P ((x1 - m) / sd < x < (x2 - m) / sd)

P ((250 - 266) / 16 < x < (282 - 266) / 16)

P (- 1 < z < 1)

P (z < 1) - P (-1 < z)

If we look in the normal distribution table we have to:

P (-1 < z) = 0.1587

P (z < 1) = 0.8413

replacing

0.8413 - 0.1587 = 0.6833

The percentage of pregnancies last between 250 and 282 days is 68.33%

B. We apply the experimental formula of 68-95-99.7

For middle 95% it is:

(m - 2 * sd, m + 2 * sd)

Thus,

m - 2 * sd <x <m + 2 * sd

we replace

266 - 2 * 16 <x <266 + 2 * 16

234 <x <298

That is, the interval would be (234, 298)

6 0
3 years ago
Determine the domain and range of each relation
blondinia [14]
Domain is the x and the range is the y, that being said, 1) domain: 1,3,5 range: 2,4,6
2) you need to solve for x then plug x in and solve for y when solving for x you can plug in a number like 1
3) same circumstance as number 2!
Hope this helped!
5 0
4 years ago
Read 2 more answers
Other questions:
  • What is 21.6 percent as a fraction
    10·1 answer
  • How much is a dozon worth
    9·1 answer
  • Which of the following are roots of the following polynomial x^3-11x^2+33x+45
    8·1 answer
  • Beth wants to earn $500 to purchase a new phone. She earns $11 an hour at her job. The function B(h)=11h represents the amount o
    6·1 answer
  • Find the factors in the expression: 3x( x +4)
    11·1 answer
  • What is the probability of rolling two dices whose sum is prime
    15·1 answer
  • CANT GET WRONG ANGEL Q..
    8·1 answer
  • Ivan earns $8 each time he walks his neighbor's dog. He already walked the dog 5 times. How many more times does he need to walk
    15·2 answers
  • Số điểm cực trị của hàm số
    12·1 answer
  • Which of the following expressions are equivalent to -2(5 - 3)
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!