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Alinara [238K]
2 years ago
6

The value of coin A is twice the value of coin B. Together, the total value of the two coins is $27.00 What is the value of each

coin ?
Mathematics
1 answer:
elena-14-01-66 [18.8K]2 years ago
5 0

Answer:

27÷2=$13.50

Step-by-step explanation:

Easy

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The mean score on a set of 17 test is 72. Suppose two more students take the test and score 68 and 63. What is the new mean?
Masja [62]

Answer:

New mean=71.32

Step-by-step explanation:

The expression for the total initial score is;

T=M×S

where;

T=total initial score

M=mean score

S=number in the set

replacing;

T=unknown

M=72

S=17

replacing;

T=72×17=1,224

The total initial score=1,224

Determine the total score by;

total score=total initial score+total final score

where;

total initial score=1,224

total final score=(68+63)=131

replacing;

total score=1,224+131=1,355

Determine the new mean;

New mean=total score/new number

where;

total score=1,355

new number=(17+2)=19

replacing;

new mean=1,355/19=71.32

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3 years ago
The Jones family bought 3 drinks (d) and 3 snacks (s) for $21. The Davis family bought 2 drinks (d) and 3 snacks (s) for $18. Le
mario62 [17]
3d+ 3s = $21 because they bought three drinks and three snacks
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2 years ago
Write an integer to describe:The stock market increased 75 points
vladimir1956 [14]
The stock market increased 75 point: = +75 or 75
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Find the square of 3a_4b
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(3a-4b)²
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Sarai is mixing a solution. She pours all the liquid from a full small beaker into a larger beaker. The liquid fills the large b
n200080 [17]

Answer:

2000 ml

Step-by-step explanation:

Given: Sarai pours all the liquid from a full small beaker into a larger    beaker.

           The liquid fills the large beaker to 15% of its capacity.

            The small beaker holds 300 ml.

Lets assume capacity of large beaker to hold be "x".

As given, Sarai pours all the liquid from a full small beaker into a larger beaker

∴ 15\% \times x= 300\ ml

⇒ 0.15x= 300

Dividing both side by 0.15

⇒x= \frac{300}{0.15}

∴ x= 2000\ ml

Hence, the large beaker can hold 2000 ml of liquid.

3 0
3 years ago
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