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Phantasy [73]
4 years ago
5

A coin collection is made up of 34 coins comprised of nickels and dimes. The total value of the collection is $1.90. How many di

mes and nickels made up these collections?
Mathematics
1 answer:
riadik2000 [5.3K]4 years ago
7 0

Answer:

x = nickels

y= dimes

x + y = 34

.05x + .10y= $1.90

-.10x - .10y = -3.40

-.05x + .10y = 1.90

-.05x = -1.50

x = 30 nickels

30 + y = 34

y = 4 dimes

(3,4)

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sweet [91]

Answer:

Step-by-step explanation: Area =length × width

7050m^2 = X× 75m

7050 =75X

Divide both sides by 75

7050÷75 =75÷75

74m= X

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Use double angle formulas to find the exact value of sin2x,cos2x, and tan2x
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cos2x = (cosx)^2 - (sinx)^2;
tan2x = (sin2x)/(cos2x);

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=> sin2x = 120/169; 
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3 years ago
A recipe calls for two eggs to make 10 pancakes. How many eggs will you need to make 35 pancakes?
zzz [600]
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5 0
3 years ago
Stacy was born in 1996.When she was, her brother was 7. What year was her brother born
Tasya [4]

Answer:

Her brother was born in 1989

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
Find the ratio y:x, if 3x=11y,
Aleks [24]

Answer:

3:11

Step-by-step explanation:

3x=11y

<u>Rearrange to the format of the ratio.</u>

11y = 3x

<u>Let's find </u><u>y/x</u><u>. </u><u>y/x</u><u> is </u><u>y:x.</u>

11y = 3x

<u>Divide both sides by </u><u>11</u><u>.</u>

11y/11 = 3x/11

y = 3x/11

<u>NOW LET'S DIVIDE BOTH SIDES BY </u><u>x</u><u> TO GET </u><u>x</u><u> AS THE DENOMINATOR OF </u><u>y</u><u>.</u>

y = 3x/11

y/x = (3x/11)/x

y/x = (3x/11) * 1/x

y/x = 3/11

Therefore, y:x = 3:11

Please thank, rate 5 stars, and give brainliest. Thank you.

7 0
3 years ago
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