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SOVA2 [1]
3 years ago
6

Wilma has 28 coins, all nickels, and dimes worth $2.05. How many nickels does she have?

Mathematics
2 answers:
Cerrena [4.2K]3 years ago
4 0

Answer:

15 nickels and 13 dimes

Step-by-step explanation:

5n + 10d = 205 cents

n + d = 28

n = 28-d

5(28-d) +10d = 205

140 -5d + 10d = 205

5d = 65

d = 13

n = 28-d = 28-13 = 15

5n = 5(15) = 75

10d = 10(13) = 130

75+130=205

tiny-mole [99]3 years ago
3 0
15 nickels and 13 dimes
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Whitepunk [10]

Answer:

16/33

Step-by-step explanation:

Tổng của cả 4 tấm thẻ là một số lẻ khi:

Có 1 thẻ là lẻ, 3 thẻ còn lại là chẵn, có: 6C1.5C3=60 cách

Có 3 thẻ là lẻ, 1 thẻ là chẵn, có: 5C1.6C3=100 cách

Suy ra có 160/11C4=16/33 cách

3 0
3 years ago
What is the y-intercept of a line that has a Slope of 3 and passes through point (-1, -7)
Degger [83]

Answer:

B)-4

Step-by-step explanation:

y=mx+c

sub in a point and gradient/slope to get c

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-7=-3+c

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y=3x-4

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6 0
2 years ago
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7 0
2 years ago
Two lines, a and b, are represented by the equations given below:
professor190 [17]

Answer:

-5,-11 because it satisfies both equations

Step-by-step explanation:

Plug -5 into both equations and you get -11

8 0
3 years ago
The nature park has a pride of 7 adult lions and 4 cubs. The adults eat 6 pounds of meat each day and the cubs eat 3 pounds. Sim
Mademuasel [1]

Answer:

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Step-by-step explanation:

Hope I helped pls give brainliest

8 0
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