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
Zinaida [17]
3 years ago
7

URGENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
bija089 [108]3 years ago
6 0

Answer:

14 hours

Step-by-step explanation:

So we know that it take him 1 hour to paint half of a painting and he has 7 to do all you have to do is multiply 7 times 2 because it takes 2 hours to do 1 painting.

koban [17]3 years ago
5 0

Answer:

I believe it should take an artist 14 hours. It's 14

Step-by-step explanation:

I did the math and got 14. I hope you have a good day!

You might be interested in
Manchu has drawn a
timama [110]

Answer:

Height of each triangle: 14cm

Area of each triangle: 168cm²

Step-by-step explanation:

So we know that the base of the area is 24. Lets find the height.

336 ÷ 24 = 14

If he makes two triangles out of the rectangle that just means he cuts it in half.

To find the area of one triangle lets do:

336 ÷ 2 = 168

Let's double check our answer:

(14 × 24) ÷ 2 = 168

Seems great!

6 0
3 years ago
What are the solutions of -1 <=x-3<4? help asap ​
viva [34]
I think the answer is -1=x-3<4
4 0
2 years ago
An artificial soccer pitch is 91 meters long and 43 meters wide. If the cost of the pitch is AED 20 per square meter. What is th
Novosadov [1.4K]

The Cost of installing the artificial soccer pitch is $5360

A rectangle is a quadrilateral (has four sides and four angles) in which opposite sides are parallel and equal.

The soccer pitch us rectangle in shape. Hence:

Perimeter of soccer pitch = 2(length + width) = 2(91 + 43) = 268 meters

Cost of installing the pitch = $20 per meter * 268 meters = $5360

The Cost of installing the artificial soccer pitch is $5360

Find out more on perimeter at: brainly.com/question/16596982

6 0
2 years ago
In a sample of 42 burritos, we found a sample mean 1.4 lb and assumed that sigma equals.5. In a test of the hypothesis H subscri
Sergio [31]

Answer:

D. 0.9953 (Probability of a Type II error), 0.0047 (Power of the test)

Step-by-step explanation:

Let's first remember that a Type II error is to NOT reject H0 when it is false, and the probability of that occurring is known as β. On the other hand, power refers to the probability of rejecting H0 when it is false, so it can be calculated as 1 - β.

To resolve this we are going to use the Z-statistic:

                                           Z = (X¯ - μ0) / (σ/√n)

where  μ0 = 1.2

            σ = 5

            n = 42

As we can see in part A of the attached image, we have the normal distribution curve representation for this test, and because this is a two-tailed test, we split the significance level of α=0.01 evenly into the two tails, 0.005 in each tail, and if we look for the Z critical value for those values in a standard distribution Z table we will find that that value is 2.576.

Now we need to stablish the equation that will telll us for what values of X¯ will we reject H0.

Reject if:

Z ≤ -2.576                                                          Z ≥ 2.576

We know the equation for the Z-statistic, so we can substitute like follows and resolve.

Reject if:

(X¯ - 1.2) / (5/√42) ≤ -2.576                          (X¯ - 1.2) / (5/√42) ≥ 2.576

X¯ ≤ -0.79                                                         X¯ ≥ 3.19

We have the information that the true population mean is 1.25, so we now for a fact that H0 is false, so with this we can calculate the probability of a Type II error:  P(Do not reject H0 | μ=1.25)

As we can see in part B of the attached image, we can stablish that the type II error will represent the probability of the sample mean (X¯) falling between -0.79 and 3.19 when μ=1.25, and that represents the shaded area. So now we now that we are looking for P(-0.79 < X¯ < 3.19 | μ=1.25).

Because we know the equation of Z, we are going to standardize this as follows:

P ( (-0.79 - 1.25) / (5/√42) < Z <  (3.19 - 1.25) / (5/√42) )

This equals to:

P(-2.64 < Z < 2.51)

If we go and look for the area under the curve for Z positive scores in a normal standart table (part C of attached image), we will find that that area is 0.9940, which represents the probability of a Type II error.

Therefore, the power of the test will be 1-0.9940 = 0.006

If we look at the options of answers we have, there is no option that looks like this results, which means there was a probable redaction error, so we are going to stay with the closest option to these values which is option D.

3 0
3 years ago
A certain manufacturer sells a television for $170. One online retailer has a standard markup of 27% and charges an additional 1
blondinia [14]

Answer:

(a) $248.285

(b) $249.441

(c) I will prefer to buy the television from online store.

Step-by-step explanation:

The manufacturing price of a television is $170.

(a) The online retailer charges a standard makeup of 27% and an additional 15% charge for shipping and tax.

Therefore the final price will be $[170(1+\frac{27}{100})](1+\frac{15}{100} )

= $(170 × 1.27 × 1.15)

= $248.285

(b) Now, the superstore has makeup of 34% and then 9.5% charges for state tax.

So, the final price becomes $[170(1+\frac{34}{100} )](1+\frac{9.5}{100})

= $(170 × 1.34 × 1.095)

= $249.441

(c) So, I will prefer to buy the television from the online store because the final price is less and also the shipping charges are included in the final price. (Answer)

6 0
3 years ago
Other questions:
  • Please help 50 Points. im desperate
    9·2 answers
  • Snslsndodndidndkdndkdndldkdkdmdldmdd pls hell
    6·1 answer
  • 5x-6-3(x+4)=3(1-5)-7
    7·1 answer
  • Lin Created a scaled copy of triangle A with an area of 72 units
    14·1 answer
  • Please help hurry!!!!!!!
    9·1 answer
  • What value of x makes the equation true?<br> 5(x-3)-2x=6
    15·2 answers
  • Apples cost $0.95 per pound and bananas cost $1.10 per pound. Brian bought a total of 10 pounds of apples and bananas for $9.95
    6·1 answer
  • A toy that originally sold for 12 dollars went of sale for 8 dollars what was the percent discount? Remember to show your work!
    9·1 answer
  • The function g(x) is a transformation of the cube root parent function f(x)= sqrt[3] x . What function is g(x) ?
    6·1 answer
  • Hurry for Brainlist =Accurate Answer
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!