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Sophie [7]
2 years ago
11

the diameter of a U.S penny is 3/4 inch. how many pennies would it take to make a row 42 inches long?

Mathematics
2 answers:
lesya692 [45]2 years ago
7 0
42 divided by 3/4 equals 56 pennies
makvit [3.9K]2 years ago
5 0

Answer: 56

Step-by-step explanation:

We are given that ,

The diameter of each U.S. penny = \dfrac{3}{4} inch.

The length of the row of pennies = 42 inches

Then , the number of pennies in that row will be :

=\text{Length of row}\div\text{Diameter of each penny}\\\\=42\div\dfrac{3}{4}\\\\=42\times\dfrac{4}{3}\ \ \text{[Flip divisor fraction, multiply the original number by its reciprocal.]}\\\\=56  

Hence, the required number of pennies. = 56

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6 0
3 years ago
Complete this equation 2 2/3 +4/5= 40/? + 12/? = ?/?
OlgaM077 [116]

Answer:(7/8 - 4/5)^2 = 9

1600

= 0.005625

Step-by-step explanation:

Subtract: 7

8

- 4

5

= 7 · 5

8 · 5

- 4 · 8

5 · 8

= 35

40

- 32

40

= 35 - 32

40

= 3

40

For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of the both denominators - LCM(8, 5) = 40. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 8 × 5 = 40. In the next intermediate step the fraction result cannot be further simplified by cancelling.

In words - seven eighths minus four fifths = three fortieths.

Exponentiation: the result of step No. 1 ^ 2 = (3

40

) ^ 2 = 32

402

= 9

1600

In words - three fortieths squared = nine one-thousand six-hundredths.

6 0
3 years ago
What is the answer to this 6w+5>2(3w+3).
fomenos

Answer:

No Solution

Step-by-step explanation:

So we have the inequality:

6w+5>2(3w+3)

Distribute on the right:

6w+5>6w+6

Subtract 6w from both sides:

5>6

5 is <em>not</em> greater than 6.

Therefore, the answer to this inequality is no solution.

8 0
3 years ago
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