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Vedmedyk [2.9K]
3 years ago
7

Kelly solved an equation: H/ 4 - 11 = 13 using two inverse operations of adding 11 to both sides of the equations, and then divi

ding both sides by 4. Her answer is H = 6. What is her error?
Mathematics
1 answer:
MariettaO [177]3 years ago
6 0

Answer:

She should have multiplied by 4, not divided

Step-by-step explanation:

Given

\frac{H}{4} - 11 = 13 ( add 11 to both sides ) ← correct

\frac{H}{4} = 24 ( multiply both sides by 4 to clear the fraction )

H = 4 × 24 = 96

H is divided by 4, thus the inverse operation is to multiply

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An office manager estimates that she spends 40% of her 30-minute lunch
Elina [12.6K]

Answer:

answer = 12 min

Step-by-step explanation:

40% of 30 min = ?

10% of 30 min = 3

3*4 = 12

Thus, she spends 12 min of her 30 min lunch driving

P.S.

If the answer is wrong, then multiply it by two and retry

4 0
3 years ago
2.1.39 Tom makes $167.70 in 3 days. How much does he make in 2 days? Tom makes s in 2 days.
Musya8 [376]

Answer: He makes $111.80 in 2 days.

Step-by-step explanation:

Since we have given that

Amount he makes in 3 days = $167.70

Number of days = 3

We need to find the amount he makes in 2 days.

We will use "Unitary method" to find the amount s in 2 days.

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In 1 day, amount is given by

\dfrac{167.70}{3}=\$55.9

In 2 days, amount is given by

s=55.9\times 2\\\\s=\$111.80

Hence, he makes $111.80 in 2 days.

7 0
3 years ago
What is 1,345/99 rounded to the nearest integer?
arlik [135]
\frac{1345}{99} \approx 13.58 \approx \boxed{\bf{14}}
6 0
3 years ago
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Llana [10]
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6 0
4 years ago
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Elis [28]

Answer:

8\frac{1}{2} x - 6\frac{1}{2}

Step-by-step explanation:

Simplification (show.all.of.the.following)\\(3x-4\frac{1}{2})-(-5\frac{1}{2}x-2)\\3x-4\frac{1}{2}+5\frac{1}{2}x-2\\(3x+5\frac{1}{2}x)-(4\frac{1}{2}+2)\\(8\frac{1}{2})-(6\frac{1}{2})

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3 years ago
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