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photoshop1234 [79]
2 years ago
10

How many ways can a person with five ​nickels, three​ dimes, and two quarters make a 75-cent purchase from the​ machine?

Mathematics
1 answer:
DIA [1.3K]2 years ago
8 0
2 quarters, 2 dimes, and 1 nickel
You might be interested in
a rectangle swimming pool is 9 meters wide with a surface area of 3 square meters. what is the length of the pool?
yarga [219]
L*w=A
l*9=3
(l*9)/9=3/9
l=1/3 of a meter.
7 0
3 years ago
Consider the function f(x) = 10x^2 + 6x - 2 when x=3​
Savatey [412]

Answer:

106

Step-by-step explanation:

Substitute x = 3 into f(x) and evaluate , that is

f(3)

= 10(3)² + 6(3) - 2 = 10(9) + 18 - 2 = 90 + 18 - 2 = 106

5 0
3 years ago
1) Helen is 8 years older than Jane. Twenty years ago Helen was three times as old as Jane. How old is each now and what is the
Mice21 [21]

Answer:

Part 1) Helen's age is 32 years old and Jane's age is 24 years old

Part 2) 13 twenty-dollar bills

Step-by-step explanation:

Part 1) Helen is 8 years older than Jane. Twenty years ago Helen was three times as old as Jane. How old is each now and what is the equation?

Let

x----> Helen's age

y---> Jane's age

we know that

x=y+8 ----> equation A

(x-20)=3(y-20) -----> equation B

substitute equation A in equation B and solve for y

(y+8-20)=3(y-20)

y-12=3y-60

3y-y=60-12

2y=48

y=24 years

Find the value of x

x=y+8

x=24+8=32 years

Part 2)

Let

x-----> the number of five-dollar bills

y----> the number of twenty-dollar bills

we know that

5x+20y=305 -----> equation A

y=x+4 ------> x=y-4 ------> equation B

substitute equation B in equation A and solve for y

5(y-4)+20y=305

5y-20+20y=305

25y=325

y=13 twenty-dollar bills

Find the value of x

x=y-4

x=13-4=9  five-dollar bills

5 0
2 years ago
What is the exact value of 11.68 - 0.48 ÷ (-1.6) =
Ann [662]

Answer:

11.93

Step-by-step explanation:

Order of Operations rules require that we do the division first:

-0.48      48

-------- = --------- = 0.3

-1.6        1600

Then we combine 11.68 ad 0.3, obtaining 11.93.

5 0
3 years ago
Read 2 more answers
PLEASE ANSWER QUICKLY
GaryK [48]
We have that
<span>1/4 x + 2/3 y = 5 ----> multiply by 12 both sides---> 3x+8y=60
1/2 x + 3/2 y = 11---> multiply by 2 both sides----> x+3y=22

therefore

the answer is the option
</span><span>B. 3x + 8y = 60 ; x + 3y = 22</span>
8 0
3 years ago
Read 2 more answers
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