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3 years ago

How do i evaluate 3/7r+5/8s when r=14 and s=8

Mathematics

1 answer:

Masteriza [31]3 years ago

7 0

Answer:

Step-by-step explanation:

3/7r + 5/8s

r = 14

s = 8

3/7 x 14 + 5/8 x 8

3/7 x 14 = 6

5/8 x 8 = 5

6 + 5 = 11

ok so it's like the 3/7 and 5/8 are fractions so you just multiply each one by the number their next you which in this case is r and s so it's like you're just multiplying a fraction and a number. does that make since?

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Using the numbers 5, 8, and 24, create a problem using no more than four operations (adding, subtracting, multiplication, divisi

Alik [6]

The given three numbers are 5,8,24.

We have to use four operations (Adding, Subtracting,multiplication, division, square, square root, cube, cube root) out of these operation to make the result an irrational number.

$1. \sqrt{\frac{24}{8}} + 5=\sqrt{3}+5,\\\\2. \sqrt{\frac{24}{8}} - 5=\sqrt{3} -5 \\\\ 3.\sqrt{\frac{24 \times 5}{8}}=\sqrt{15} \\\\ 4. (5 \times 8 \times 24)^\frac{1}{3}$

There are many more examples that you can write.

Keep in mind

1. Sum of Rational and irrational is always irrational.

2. Difference of rational and irrational is always irrational.

As none of the 5,8,24 is a perfect square , nor addition of any two results in a perfect square, so square root of their addition or subtraction or multiplication results in an irrational number.

Similarly ,apart from 8, none of 5,24 is a perfect cube.So if you add or subtract any number from 8 and take their cube root or square root ,results in an irrational number.

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3 years ago

Read 2 more answers

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djyliett [7]

-- If the spinner is honest and the sections are all the same size, then
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3 years ago

Please answer this correctly

natta225 [31]

Answer:

r^3+q

Step-by-step explanation:

Hope this was helpful

stay safe

brainliest is appreciated:)))

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3 years ago

A medical student is conducting a study to track boys’ weight from age 5 to age 18. The student graphs some data and determines

ollegr [7]

Answer:

A. the increase in the number of pounds a boy gains each year

Step-by-step explanation:

Any function that can be written as:

y = ax + b

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Slope of the function (or sometimes referred to as "steepness") is determined by the value of a, which is 1.73 in our case. Since y is number of boy's pounds and x is his year, that means that for every year (when x changes by 1), the boy's weight (y) will change by 1.73.

Value of a is positive (1.73), which means that for each year, from this 5 to 18 interval, boy's weight will increase.

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3 years ago

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