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3 years ago

Rob has a piece of rope that is 126 inches long he cuts the roping to 8 inch pieces how much rope does Rob have left over

1 answer:

7 0

.75 inches i think because if you divide the total by 8, it gives you 15.75 so there would be 15 eight inch pieces and a left over of .75 in.

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Whic decimal is equivalent to 5.05? 50.05 or 5.5 or 5.050 or 50.5

kati45 [8]

5.50 because anything after a number that is zero means nothing

3 0

3 years ago

Read 2 more answers

The ratio of oil to vinegar is 8:5 how much oil blended with 7 liters vinegar for recipe

Ugo [173]

Write and solve an equation of ratios:

oil 8 x
---- = ---- = -----------
vin 5 7 liters

Then 5x = 56, and x = 56/5 liters (of vinegar)

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3 years ago

A population of mice is increasing exponentially. On Monday there were 120 mice. One month later there were 132 mice. Write a fu

den301095 [7]

Answer:

$y =120*1.1^x$

$r = 10\%$ --- Percentage increase

Step-by-step explanation:

Given

Let

$x \to months$

$y \to mice$

So, we have:

$(x_1,y_1) = (0,120)$ --- Monday

$(x_2,y_2) = (1,132)$ --- One month later

Required

The function

The function is represented as:

$y = ab^x$

In $(x_1,y_1) = (0,120)$ , we have:

$120 =a * 1$

$120 =a$

Rewrite as:

$a = 120$

In $(x_2,y_2) = (1,132)$ , we have:

$132 = a * b^1$

$132 = a * b$

Substitute $a = 120$

$132 = 120 * b$

Solve for b

$b = \frac{132}{120}$

$b = 1.1$

Recall that:

$y = ab^x$

Hence, the function is:

$y =120*1.1^x$

To get the monthly percentage increase (r), we have:

$y = a(1 + r)^x$

Compare to: $y = ab^x$

So:

$1+r =b$

Make r the subject

$r = b-1$

$r = 1.1-1$

$r = 0.1$

Express as percentage

$r = 0.1*100\%$

$r = 10\%$

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3 years ago

What is 0.45 written as a fraction

Setler79 [48]

Answer:

The answer is 9/20

Step-by-step explanation:

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3 years ago

If 2/3 x - 1=4, then x =?

Olegator [25]

X = 7.5
or
x = 7 1/2

6 0

3 years ago