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AleksAgata [21]
3 years ago
5

A school raised $4,000 for its new library. 36% of the money is used to buy reference book. How much money is used to buy refere

nce books?
Mathematics
1 answer:
Blizzard [7]3 years ago
6 0

Answer:

$1440

Step-by-step explanation:

36% of $4,000 is $1440

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Anaika has found 25 coins this week, all quarters and dimes . If total worth of all coins is $4.00, how many of each coin does a
balu736 [363]

Answer:

10 quarters and 15 dimes

Step-by-step explanation:

25 = Quarters +  Dimes

Total worth = $4.00 =  0.25* Quarter +  0.1*Dimes

so...

25 = Q + D ,     D = 25 - Q

4 =  0.25*Q + 0.1 * (25 - Q)

4 = 0.25 * Q + 2.5 - 0.1*Q

1.5 = 0.15Q

Q = 10

D = 15

4 0
3 years ago
Find two consecutive positive integers such that the sum of their squares is 421
alexandr402 [8]
14 and 15
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15^2 = 225
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3 years ago
On Wednesday, a local hamburger shop sold a combined total of 512 hamburgers and cheeseburgers. The number of
Mazyrski [523]

Hey there! I'm happy to help!

Let's call our hamburgers h and our cheeseburgers c and set up a system of equations to solve.

c+h=512

c=3h

Let's plug this value of c into the first equation to solve for h.

3h+h=512

4h=512

Divide both sides by 4.

h=128

Therefore, 128 hamburgers were sold on Wednesday.

Have a wonderful day! :D

3 0
3 years ago
For the following set of data, find the number of data within 1 population standard deviation of the mean. Data Frequency 15 1 1
RUDIKE [14]
The mean age of the frequency distribution for the ages of the residents of a town is 43 years.
Step-by-step explanation:
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Alenkasestr [34]

Answer:

6

Step-by-step explanation:

The ASP of a hexagon is 720 degrees

3 0
3 years ago
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