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yKpoI14uk [10]
3 years ago
14

Hi I need HELP with this question​

Mathematics
1 answer:
myrzilka [38]3 years ago
8 0

Answer:

B

Step-by-step explanation:

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Kevin and Randy Muise have a jar containing 70 coins, all of which are either quarters or nickels. The total value of the coins
Nikitich [7]

Answer:

50 nickels, 20 quarters.

Step-by-step explanation:

System of equations (q = # of quarters, n = # of nickels):

<em>q + n = 70, 0.25q + 0.05n = 7.50</em>

the first equation can be changed to q = 70 - n, so we are able to <em>substitute q with 70 - n</em>.

So, it will look like <em>0.25*70 - 0.25n + 0.05n = 7.50</em>. This can be simplified to <em>0.2n = 10</em>, which means that n = 50.

Knowing that we can solve <em>q + 50 = 70</em>, which means that q = 20.

6 0
3 years ago
Round to the place value of the underlined digit 862,840 underlined 6
omeli [17]

Answer:

900,000

Step-by-step explanation:

there you go bud

4 0
3 years ago
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Marina86 [1]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
Michelle drew a scale drawing of a swimming pool she used the scale 14 millimeters 5 meters in the drawing the pool is 42 millim
Lera25 [3.4K]

EXPLANATION

Let's see the facts:

The scale is---> 14 milimeters ----> 5 meters

Width = 42 milimeters

Applying the unitary method, the actual width of the pool is:

Actual_{}width=42\text{ mm}\cdot\frac{5m}{14\text{ mm}}=15m

The width of the pool is 15m

6 0
11 months ago
Find -3(6m-8)+(-4+2m).
mamaluj [8]

Answer: − 16 m + 20

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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