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SpyIntel [72]
3 years ago
14

Miranda is taking tennis lessons in one lesson, she returned 36 balls out of all the balls served to her. If she returned 40% of

the balls, how many balls were
served to her?
Mathematics
1 answer:
iragen [17]3 years ago
4 0

Answer:

90 balls

Step-by-step explanation:

Set up proportion

36/x = 40/100

Cross multiply: 40x=3600

Solve for x

x=90

To check work:

40 percent of 90 would be 36

90(0.4)=36

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3 years ago
Find all values of k for which the equation 3x^2−4x+k=0 has no solutions.
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The given equation has no solution when K is any real number  and k>12

We have given that

3x^2−4x+k=0

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<h3>What is the condition for a solution?</h3>

If Δ=0, it has 1 real solution,

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We get,

Δ=k^2−144 here Δ is not zero.

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Therefore the given equation has no solution when K is any real number.

To learn more about the solution visit:

brainly.com/question/1397278

5 0
2 years ago
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garik1379 [7]

Answer:

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so, solving for x in 2x+9,

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now, 31 + 3y+2 =  180

3y = 180 - 33

y = 147/3 = 49

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Answer:

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Step-by-step explanation:

Hope it helps!

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Answer:

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Step-by-step explanation:

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2 years ago
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