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maksim [4K]
3 years ago
12

Sophie has $4.20 worth of dimes and quarters. She has twice as many quarters as

Mathematics
2 answers:
ikadub [295]3 years ago
7 0

Answer:

Step-by-step explanation:

Gwar [14]3 years ago
4 0

Answer:

q=amount of quarters

d=amount of dimes

0.10d+0.25q=4.20

2d=q

comment "egg" if you're coming here from DeltaMath

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Marcy needs to make 5 lb of a cashew/raisin mixture for a party. Her local grocery store sells raisins for $4.50/lb and cashews
Aloiza [94]

Answer:

Pounds of raisins = 1.5 lb

Pounds of cashew = 3.5 lb

Step-by-step explanation:

Let

Pounds of raisins = x

Pounds of cashew = y

x + y = 5 (1)

4.50x + 9.50y = 40 (2)

From (1)

x = 5 - y

Substitute x = 5 - y into

4.50x + 9.50y = 40

4.50(5 - y) + 9.50y = 40

22.50 - 4.50y + 9.50y = 40

- 4.50y + 9.50y = 40 - 22.50

5y = 17.5

y = 17.5 / 5

= 3.5

y = 3.5lb

Substitute y = 3.5 into

x + y = 5

x + 3.5 = 5

x = 5 - 3.5

= 1.5

x = 1.5lb

Pounds of raisins = 1.5 lb

Pounds of cashew = 3.5 lb

7 0
3 years ago
Your current schedule only lets you take two 1-credit courses every six months. You need 12 credits to get the degree you want.
lianna [129]
So,

Since you can only take two one-credit courses every six months, you can earn 2 credits every six months, and 4 credits in one year.  Multiplying that by 3, you get 12 credits in 3 years.

It will take 3 years to get the degree.
6 0
3 years ago
Solutions of 3x+2y=4 and 6x+4y=8
Alecsey [184]

Answer:

Infinite solutions

Step-by-step explanation:

1) First, you can solve this easily by elimination. Multiply the first equation by -2 in order to cancel out terms when adding to the second equation.

2) Then, add the new set of equations together. However, everything cancels out, bringing us to 0 = 0. This means that the lines the equations make must be the same. Thus, all real numbers must make this equation true, meaning that there are infinite solutions.

4 0
3 years ago
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Lelechka [254]

Answer:

Step-by-step explanation:

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3 years ago
Label the slope and y intercept​
klasskru [66]
Slope is 2 and the y intercept is 4
7 0
4 years ago
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