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
BabaBlast [244]
3 years ago
15

Mandy built a pyramid for her project on Egypt with a

Mathematics
2 answers:
motikmotik3 years ago
6 0

Answer:

The area of the base of the pyramid is 9.6 square inches.

Step-by-step explanation:

Given : Mandy built a pyramid for her project on Egypt with a  volume of 48 in.

To find : The area of the base of the  pyramid ?

Solution :

The formula of volume of pyramid is

V=Bh

where, B is the area of the base

and h is the height

The volume is 48\ in^3.

The height is 5 inches.

Substitute the value,

48=B\times 5

B=\frac{48}{5}

B=9.6

Therefore, the area of the base of the pyramid is 9.6 square inches.

Mekhanik [1.2K]3 years ago
3 0

Answer:

A )Use the formula V = one-third B h to solve the problem.

B )The volume of the pyramid is 48 and three-fourths in.3

C) The height of the pyramid is 6 inches.

D) Substitute the values for V and h into the formula, and then solve for B

F) The area of the base of the pyramid is 24 and StartFraction 3 over 8 EndFraction in.2

HOPE IT HELPED

You might be interested in
How did you apply proportional reasoning as you worked through these problems?
pogonyaev

Answer:

youll have to show the problems to get an answer!

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
An automobile manufacturer who wishes to advertise that one of its models achieves 30 mpg (miles per gallon) decides to carry ou
Katyanochek1 [597]

Answer:

t=\frac{29.35-30}{\frac{1.365}{\sqrt{6}}}=-1.17  

p_v =P(t_{(5)}  

If we compare the p value and the significance level given \alpha=0.05 we see that p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis.  

We can say that at 5% of significance the true mean is not significantly less than 30 so then the claim that true average fuel efficiency is (at least) 30 mpg makes sense

Step-by-step explanation:

Data given and notation  

The mean and sample deviation can be calculated from the following formulas:

\bar X =\frac{\sum_{i=1}^n x_i}{n}

s=\sqrt{\frac{\sum_{i=1}^n (x_i -\bar X)}{n-1}}

\bar X=29.35 represent the sample mean  

s=1.365 represent the sample standard deviation  

n=6 sample size  

\mu_o =30 represent the value that we want to test  

\alpha=0.05 represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the true mean is lower than 30 or no, the system of hypothesis are :  

Null hypothesis:\mu \geq 30  

Alternative hypothesis:\mu < 30  

Since we don't know the population deviation, is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}} (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic  

We can replace in formula (1) the info given like this:  

t=\frac{29.35-30}{\frac{1.365}{\sqrt{6}}}=-1.17  

P-value  

We need to calculate the degrees of freedom first given by:  

df=n-1=6-1=5  

Since is a one-side left tailed test the p value would given by:  

p_v =P(t_{(5)}  

Conclusion  

If we compare the p value and the significance level given \alpha=0.05 we see that p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis.  

We can say that at 5% of significance the true mean is not significantly less than 30 so then the claim that true average fuel efficiency is (at least) 30 mpg makes sense

5 0
2 years ago
Solve for the value of k.
OLEGan [10]

Answer:

The value of K is 5

Step-by-step explanation:

I reversed it.

The tiny squares means 90⁰, so 90+49=139

All of these angles add up to 180⁰

So 180-139=41

The k equation equals 41⁰, so reverse it to find answer

41-1=40

40÷8=5

7 0
2 years ago
Read 2 more answers
Simplify this expression <br> 7z+5+6z-9
Simora [160]

Answer:

7z + 5 + 6z - 9  (Add 7z and 6z, subtract 9 from 5)

<em>13z - 4  </em>(Can't be simplified further)

8 0
2 years ago
Someone help need this done right now I’ll mark u brainliest
Ad libitum [116K]

Answer:

89 meters

Step-by-step explanation:

We know it's 9 + "the height of the triangle".

Fortunately, the height of the triangle (let's call it y) can be computed from:

y^2 + 18^2 = 82^2 (Pythagoras theorem).

y^2 = 82^2 - 18^2 = 6724 - 324 = 6400

y = 80 (or y = -80 but it doesn't make sense in geometry).

so x = y + 9 = 89;

3 0
2 years ago
Other questions:
  • Which of the following equations has an infinite solution set?
    15·1 answer
  • Two linear are parallel if and only if their slopes are
    10·1 answer
  • Marie spends 14 dollars on lottery tickets every week and spends $128 per month on food. On an annual basis, the money spent on
    15·1 answer
  • 1 cm = 18 feet 1 cm = 3 feet above are two different models of the same rectangle. if the length of the model on the top is 5 cm
    9·1 answer
  • Record the product 8x43 using expanded form to help
    12·1 answer
  • Question 134 (plz help) (ps I luv u)
    9·1 answer
  • Compute the total cost of the meal to the nearest cent: meal costs $29.78 plus 5% tax and 15% tip.
    9·1 answer
  • What does interior angle A of the polygon in the figure equal?
    13·2 answers
  • Help me PLS! Anyone !!!!!!
    5·1 answer
  • Using the recurrence relation s(1) = 2 and s(2)=3, s(k) =s(k-1)+2s(k-2)+6, find the fourth term
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!