3 years ago

How much time is in 8:05 to 11:30

Mathematics

1 answer:

garik1379 [7]3 years ago

7 0

11:30 subtracted by 8:05 = 3 hours and 25 minutes

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A group of 3 children and 2 adults pay a total of $121 to take a karate class. A group of 5 children and

Minchanka [31]

Answer:

The cost for a child is $7 and the cost for an adult is $50

Step-by-step explanation:

Let 'x' represent children

Let 'y' represent adults

The equations used to come to this answer are:

$3x + 2y = 121 \\ 5x + 1y = 85$

$3x + 2y = 121 \\ 5x( - 2) + 1y( - 2) = 85( - 2) \\ \\ 3x + 2y = 121 \\ - 10x - 2y = - 170 \\ - 7x = - 49$

Therefore; x = 7

$5x + 1y = 85 \\ 5(7) + y = 85 \\ 35 + y = 85 \\ y = 85 - 35 \\ y = 50$

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2 years ago

What is the approximate radius of the disc if the area is 78.5 square inches?

Shtirlitz [24]

$\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ A=78.5 \end{cases}\implies 78.5=\pi r^2\implies \cfrac{78.5}{\pi }=r^2 \\\\\\ \sqrt{\cfrac{78.5}{\pi }}=r\implies 4.99873244587\approx r$

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3 years ago

Read 2 more answers

1) What is the number of possible outcomes if two marbles are picked out of a bag that contains three red marbles and three blue

galina1969 [7]

ANSWER: ⇒ 9 (can also be written as 3²)

Based on the given conditions, formulate:

3 × 3

Calculate:

3 × 3

Calculate the product or quotient:

9

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2 years ago

Which is greater 4.221 or 4.022

Ahat [919]

4.221 is greater because of the .221
.022 see

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4 years ago

a father was four times older than his son. ten years ago,if their present age is 423 find the age of father and son?

Fofino [41]

Answer:

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3 years ago