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2 years ago

A swimmer swam 48 kilometers in d days. What is the value of d if the averge amount swan was 3.2 kilometers?

Mathematics

1 answer:

AnnZ [28]2 years ago

3 0

To find the number of days, divide the total swam by the average:

Days = 48 / 3.2 = 15

They swam for 15 days.

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Anthony has been saving nickels dimes quarters over the last year he knows that he has twice as many nickels as quarters. change

OLga [1]

Answer:

The number of nickel's coin is 150

The number of dime's coin is 35

The number of quarter's coin is 75

Step-by-step explanation:

Let

x ----> the number of nickel's coin

y ---> the number of dime's coin

z ---> the number of quarter's coin

Remember that

$1\ nickel=\$0.05$

$1\ dime=\$0.10$

$1\ quarter=\$0.25$

we know that

$x+y+z=260$ ----> equation A

$0.05x+0.10y+0.25z=29.75$ ----> equation B

$x=2z$ ----> equation C

substitute equation C in equation A and equation B

$2z+y+z=260$

$3z+y=260$ ---> equation A1

$0.05(2z)+0.10y+0.25z=29.75$

$0.35z+0.10y=29.75$ -----> equation B1

Solve the system of equations A1 and B1 by graphing

Remember that the solution is the intersection point both graphs

The solution is the point (75,35)

see the attached figure

z=75, y=35

<em>Find the value of x</em>

$x=2(75)=150$

therefore

The number of nickel's coin is 150

The number of dime's coin is 35

The number of quarter's coin is 75

8 0

2 years ago

If a magazine has 65 pictures on 10 pages, what is the unit rate of the number of pictures to pages?

love history [14]

Hello there,

The answer to your question is:

<span>The unit rate of the number of pictures to pages is ====> 6.5

Hope this answer helps.
</span>

3 0

2 years ago

Read 2 more answers

I need help with this problem it’s due at midnight and I’m so tired of trying. Thanks it’s number 4 btw

bearhunter [10]

Answer:

Look below

Step-by-step explanation:

8 + 9 + 10 = 27

9 + 10 + 11 = 30

10 + 11 + 12 = 33

B. Every answer is divisible by 3, every consecutive answer is also 3 more than the one before it.

C. Yes

19 + 20 + 21 = 60

D. No

8 is not divisible by 3. Also, the closest you can get is 6 (1 + 2 + 3) or 9 (2 + 3 + 4).

I hope this helped! If you need anything else, let me know in the comments. :)

6 0

2 years ago

(GIVING BRAINLIEST!!)

AysviL [449]

Answer:

1 3/10

Step-by-step explanation:

Find the common denominator.

6/15 times 2

12/30

3/10 times 3

9/30

3/5 times 6

18/30

Add.

12/30 + 9/30 + 18/30 = 39/30

Simplify

13/10 = 1 3/10

3 0

2 years ago

a train is traveling from New Orleans to Memphis at a constant speed of 79 miles per hour.New Orleans and Memphis are 395.1 mile

alexdok [17]

Just use the formula time = distance / speed

395.1/79= 5.001

It will take the train approximately five hours to reach Memphis

5 0

2 years ago