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alexira [117]
3 years ago
7

you have 75 coins, all of which are dimes and half dollars. if you have $22.30 in change, how many of each coin do you have? (so

lve using substitution)
Mathematics
1 answer:
zalisa [80]3 years ago
6 0
I would have 52.7 in each coin
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What is the measure of c?<br> a = 15<br> j = 24<br> k = 32
inessss [21]

Answer:

The answer to your question is c = 20

Step-by-step explanation:

Data

a = 15

j = 24

k = 32

c = ?

Process

Use proportions to solve this problem. Compare the small triangle and the large triangle.

1.- Proportion of the small triangle

             c/15

2.- Proportion of the large triangle

            k/j

3.- Equal but terms and solve for c

            c/15 = k/j

-Substitution

            c / 15 = 32/24

            c = 32(15)/24

-Result

            c = 20

       

4 0
3 years ago
Solve for −4.2y+2.1&gt;−2.52
Alchen [17]

Answer:

y < 1.1

Step-by-step explanation:

<u>Step 1:  Subtract 2.1 from both sides </u>

-4.2y + 2.1 - 2.1 > -2.52 - 2.1

<em>-4.2y > -4.62</em>

<em />

<u>Step 2:  Divide both sides by -4.2</u>

-4.2y / -4.2 > -4.62 / -4.2

<u><em>Since you divided by a negative, that flips the sign.</em></u>

<em>y < 1.1 </em>

Answer:  y < 1.1

4 0
3 years ago
A plant manager needs 75 sq. yds. of fabric and the fabric is only 32 in. wide. How many linear feet must she make to produce 75
il63 [147K]
I think 225 cuz its only asking for the feet needed no the width so thats irrelevant <span />
4 0
3 years ago
Is this linear, exponential, or quadratic?
Lady_Fox [76]


Linear. Each increase of 1 in x means a decrease of 3 in y, so it has a consistent slope of -3
5 0
3 years ago
(a3 + 5a + 6)+(2a2+3-2a2)
fomenos

Answer: a³+5a+9

Step-by-step explanation:

6 0
3 years ago
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