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
dimaraw [331]
3 years ago
15

Pls help ill give brainly

Mathematics
2 answers:
Phantasy [73]3 years ago
8 0

Answer:

A

Step-by-step explanation:

When you multiply 8 by 2 you get (16) which brings us to A! B is wrong cause it would have to be multiplied by triple instead of 2. C is wrong cause the question is (the metal) but the metal has nothing to do with 48. D (160 ) come on let's be real here. Which brings us to our answer (A)!

deff fn [24]3 years ago
7 0

Answer:

the answer is 48π  in²

explanation:

i took the quiz

You might be interested in
Monica is completing an Algebra test worth 100 points. There are 14 questions on the test that are equally valued. How many poin
Usimov [2.4K]

Answer:

7.1 points

Step-by-step explanation:

100/14=7.1 points

3 0
2 years ago
Suppose an automotive repair company wants to determine the current percentage of customers who keep up with regular vehicle mai
Nina [5.8K]

Answer: 1692

Step-by-step explanation:

Formula to find the sample size :

n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2

Given : Confidence level : (1-\alpha)=0.90

⇒ significance level =\alpha= 0.10

z-value for 90% confidence interval (using z-table)=z_{\alpha/2}=1.645

Prior estimate of the population proportion (p) of customers who keep up with regular vehicle maintenance is unknown.

Let we take p= 0.5

Margin of error : E= 2%=0.02

Now, the required sample size will be :

n=0.5(1-0.5)(\dfrac{1.645}{0.02})^2

Simplify , we get

n=(0.25)(6765.0625)=1691.265625\approx1692

Hence, the required sample size = 1692

8 0
3 years ago
Read 2 more answers
On the first part of her trip Natalie rode her bike 16 miles and on the second part of the trip she rode her bike 42 miles. Her
-BARSIC- [3]

Answer:

14 mph   ( average speed during the second part of the trip )

Step-by-step explanation:

Let´s call  "x"  the average speed during the first part then

t = 5 hours

t  =  t₁  +  t₂        t₁   and  t₂   times during part 1 and 2 respectively

l = t*v           (  distance is speed by time )      t =  l/v

First part

t₁  = 16/x        and      t₂  = 42 / ( x + 6)

Then

t =   5   =  16/x   +   42 /(x + 6)

5 = [ 16 * ( x  +  6 ) +  42 * x ] / x* ( x + 6 )

5 *x * ( x + 6 )  =  16*x  + 96 +  42 x

5*x² + 30*x  - 58*x - 96  =  0

5*x²  -  28*x  -  96  =  0

We obtained a second degree equation, we will solve for x and dismiss any negative root since negative time has not sense

x₁,₂  =   [28 ± √ (28)² + 1920  ] / 10

x₁,₂  = ( 28  ± √2704 )/ 10

x₁  = 28  -  52 /10        we dismiss that root

x₂  = 80/10

x₂  =  8 mph       average speed during the first part, and the average speed in the second part was 6 more miles than in the firsst part. then the average spedd dring the scond part was 8 + 6 = 14 mph

6 0
3 years ago
pascal wanted the area of the door to be 54 square feet and the width still to be 2/3 the length. what would the dimensions of t
dlinn [17]
The floor wood be 81 dimensions.
8 0
3 years ago
Read 2 more answers
Noah's Café sells special blends of coffee mixtures. Noah wants to create a 20-pound mixture with coffee that sells for $9.20 pe
Mashutka [201]

Answer:

Noah needs 8 pounds of the coffee that costs $9.20 per pound and 12 pounds of the coffee that costs $5.50 per pounds

Step-by-step explanation:

Let the number of pounds of the coffee that sells for 9.20 be x while the number of pounds of the coffee that sells for 5.5 be y.

From the question, we know he wants to make 20 pounds of coffee

Thus;

x + y = 20 •••••••••••(i)

Let’s now work with the values

For the $9.20 per pound coffee, the cost out of the total will be 9.20 * x = $9.20x

For the $5.5 per pound coffee, the cost out of the total be 5.5 * y = $5.5y

The total cost is 20 pounds at $6.98 per pound: that would be 20 * 6.98 = $139.6

Thus by adding the two costs together we have a total of $139.6

So we have our second equation;

9.2x + 5.5y = 139.6 •••••••(ii)

From i, y = 20 - x

Let’s substitute this in ii

9.2x + 5.5(20-x) = 139.6

9.2x + 110 -5.5x = 139.6

9.2x -5.5x = 139.6-110

3.7x = 29.6

x = 29.6/3.7

x = 8 pounds

Recall;

y = 20 - x

y = 20-8

y = 12 pounds

7 0
3 years ago
Other questions:
  • The line parellel to 2x+y=5 and passing through (5,4) has equation
    10·1 answer
  • Maggie has $14,100 to invest, and wishes to gain $4,000 in interest over the next eight years. Approximately what is the minimum
    15·1 answer
  • Find the volume. Round to 1 decimal place
    12·1 answer
  • The sum of two consecutive even integers is 26. Find the number
    8·1 answer
  • (tan theta+sec theta-1)/(tan theta-sec theta+1)=sec theta+tan theta
    7·1 answer
  • I really need help!!
    5·1 answer
  • If x = -6, which inequality is true? A -5-3x>10 B -3-5x 13 D 2-x<-3
    6·1 answer
  • you have 1,000,000 number cubes, each measuring one inch on a side. if you arranged the cubes on the floor to make a square what
    14·1 answer
  • HELPPP ASAPPPP PLSSSS Which of the following statements are true? Check all that apply.
    15·1 answer
  • I don’t understand this, can somebody help?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!