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2 years ago

This is for homework

Mathematics

1 answer:

zalisa [80]2 years ago

5 0

Answer:

What grade is this?

Step-by-step explanation:

I don't understand.

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Can someone help me with this question please.

Daniel [21]

For part A. 0.85

For part b. 11.9

Explain

Cost of each track in album A= total cost downloading album a/ total number of track

The problem give us a has 11 trackers and the total cost of download is 9.35 pounds

9.35/11

= 0.85

Now we are given each track cost in album b cost the same as track on A

Cost of each track in album B is 0.85

Now we are given if Jane download album B , B will be 14 tracks

Total cost of downloading is album B= number of tracks in album Bx cost of each track in album B

14x0.85 pound

= 11.9

7 0

3 years ago

How do I show my work for solving the radius of a circle if the area is 78.5 cm^2

SIZIF [17.4K]

9514 1404 393

Answer:

radius = 5 cm

Step-by-step explanation:

The point of "show your work" is to have to do exactly that. If you know the answer to the problem, you are being requested to show how you got it. If you got it by using a web calculator, then show your input and its result.

If you worked the problem yourself, you probably did it by filling in numbers in the equation for the area of a circle:

A = πr²

78.5 = 3.14×r²

Dividing both sides by 3.14 gives the square of the radius:

78.4/3.14 = r² = 25

Taking the positive square root gives the radius:

r = √25 = 5

The area is in square centimeters, so the radius is in centimeters:

radius = 5 cm

7 0

2 years ago

X2-8x+10=0 solve for x

Oksi-84 [34.3K]

Answer: x = 5/3

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Penelope made note of all the bicycles and cars she could see parked or locked on acertain city block. All the cars had exactly

lesantik [10]

Given:

The number of cycles is, n (s) = 7.

The number of wheels in the cycle is, n (sw) = 2.

The number of cars is, n (c) = 15.

The number of wheels in the car is, n (cw) = 4.

The obective is to find the total number of wheels.

The total number of wheels is,

$\begin{gathered} T=n(sw)\cdot n(s)+n(cw)\cdot n(c) \\ =2\cdot7+4\cdot15 \\ =14+60 \\ =74\text{ whe}els \end{gathered}$

Hence, there are 74 wheels in the block.

If there are x bicycles and y cars, the equatioin will be,

$\begin{gathered} T=n(sw)\cdot x+n(ce)\cdot15 \\ T=2x+4x \end{gathered}$

Hence, the number of wheels for x bicycles and y cars is 2x+4x.

6 0

1 year ago

If you travel 40 miles at 45 miles per hour, how many minutes will that take you?

GenaCL600 [577]

Ok so im not good with words and math, but i am going to try my best to explain it. first you will take 45/60 which is the 45 miles per hour. next you will put it equal to 40/x. x is how many minutes. they are set equal to each other because they are the same ratio. (i honestly dont know why you cross multiply, but you just do). you then multiply 40*60 and 45*x. this gives you 2400=45x. you then divide both sides by 45 and get 53 1/3 minutes. or 53 minutes and 20 seconds

7 0

3 years ago