it said to find an equivalent fraction, divide both the numerator and denominator by the same number,such as 4. How can i do that?!?!?

Answers

Answer 1

Answer: So if you had the fraction 2/8 and 1/4 you would divide both 2 and 8 by 2 giving you 1/4. Now you have the fractions 1/4 and 1/4.

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2 1/2. Is. A.5/2. B. 3/2.c. 5/4 d. 3/4
Give an example of an irrational number that is less than -5.

How many solutions does the equation have?a+5=1/5(15+5a)

A. one solution B. infinite solutions C. no solution

Answers

The first thing we need to do is distribute on the right side. 1/5 * 15 is 3, and 1/5* 5a is 1a, so now the equation is a+5 = 3+a
Subract 3 from each side and you have a+2=a
There are no solutions because any number +2 will never equal itself. This is incorrect, because the two sides are not equal to each other, so there are no solutions(:
I hope that helped(:

A scientist estimated that a mixture would need 3 milliliters of a chemical to balance. The actual amount needed was 7 milliliters. What was the percent error of the scientist's estimation?A. 133.33%
B. 3%
C. 42.86%
D. 57.14%

Answers

Answer:

57.14%

Step-by-step explanation:

Error(E)is defined as the percentage difference an estimate(e) amount is from the actual(a) amount. The actual amount need was 7 mililters and the estimate was 3 mililiters.

Error is defined as:

$E=(a-e/a)*100$

$E=(7-3/7)*100=57.14$

The percet error if the scientists estimation is 57.14%

Letter C is the answer

Helen determined she walks about 1,800 steps per 4/5 mile. How many steps did she take if she walked 3 miles?

Answers

$1,800\ steps\ \ \rightarrow\ \ (4)/(5) \ mile\n x\ \ \rightarrow\ \ 3\ miles\n \n(4)/(5) \cdot x=1,800\cdot 3\ /\cdot(5)/(4) \n \nx=1,800\cdot(5)/(4)\cdot3 \n \nx=450\cdot15\n \nx=6750\ [steps]$