3 years ago

Hey really need help asap solve for x

Mathematics

1 answer:

igomit [66]3 years ago

4 0

Answer:

60 multiply 7

Step-by-step explanation:

420

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10 workers take 5 days at 3 hours per day to repair abroad. How many days for two road workers at 5 hours each day?

dusya [7]

Answer:

$\huge\underline\color{skyblue}{Answer ☘}$

$10 \: people \times 3 \: hrs/day = \\ 30 \: man \: hrs/ \: day \\ \\ 2 \: people \times 5 \: hrs/day = \\ 10 \: man \: hrs \: per/day \\ \\ 2 \: people \: work \: 5 \: hrs \: a \: day, \: so \: they \: \\deliver \: 10 \: man \: hours \: a \: day. \\ To \: finish \: a \: work \: of \: 100 \: man \: hours , \\ they’ll \: need \\ \\ \frac{100}{10} = 10 \: days$

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3 years ago

The sum of 28 consecutive odd positive integers is a perfect cube. Determine the smallest possible set? What is the first and la

aleksandrvk [35]

Answer:

71 + 73 + ..... + 125 = 2,744 = $14^{3}$ .

Step-by-step explanation:

The smallest set starts at 71. The last term is 125.

The total is 2,744, which is $14^{3}$ .

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3 years ago

What is the recursive formula for the sequence 3, 12, 48, 192, 768...? a1 = 3, an = (an - 1)(-4) a1 = 3, an = (an - 1) - 4 a1 =

denis23 [38]

Answer:

a1 =3

an = an-1 * 4

Step-by-step explanation:

a1 =3

we are multiplying by 4 to get the next number in the series

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6 0

3 years ago

On anne's bicycle, the ratio of pedal turns to rear-wheel turns in second gear is 4 to 7. if her rear wheel turns 875 times per

quester [9]

Let the number of times she turns the pedal in one mile be x.

Given that her rear miles turns 875 times in one mile and the ratio of pedal turns to rear wheel turns is 4 to 7, then

$\frac{4}{7} = \frac{x}{875} \\ \\ \Rightarrow 7x=4(875)=3,500 \\ \\ \Rightarrow x= \frac{3,500}{7} =\bold{500}$

Therefore, she turns the pedal 500 times in one mile.

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