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3 years ago

6

Daniela measures her math book and records its width as 21.9 cm to the nearest tenth of a centimeter. The actual measurement of

the book’s width is 22.0 cm. What is the percent error of her measurement? Round your answer to the nearest tenth of a percent.

1 answer:

chubhunter [2.5K]3 years ago

6 0

The percent of error is 0.5%

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Marcos reads 3, books in 1 3/4 weeks.

Fofino [41]

Answer:

$x = \frac{12}{7}\ books$

Step-by-step explanation:

Given

$3\ books = 1\frac{3}{4}\ weeks$

Required

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So, we have:

$3\ books = 1\frac{3}{4}\ weeks$

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Cross Multiply

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Convert fraction to improper fraction

$x * \frac{7}{4} = 3$

Multiply through by $\frac{4}{7}$

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$x = 3 * \frac{4}{7}$

$x = \frac{12}{7}\ books$

<em>Hence: 12/7 books were read in a week</em>

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Grace [21]

True, line x is parallel to line y, according to the diagram

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3 years ago

What is seven minus 4

MrRissso [65]

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0/1 Gabriel used 1/3 of a liter of milk to make 2/9 of a jug of tea. How much milk is required to fill the jug?

Annette [7]

Answer:

1 1/2 liters of milk is required to fill the jug

Step-by-step explanation:

Gabriel used 1/3 of a liter of milk to make 2/9 of a jug of tea. How much milk is required to fill the jug?

From the above question, we know that:

2/9 jug of tea = 1/3 liter of milk

1 jug of tea = x

Cross Multiply

2/9 × x = 1 × 1/3

x = 1/3 /2/9

x = 1/3 ÷ 2/9

x = 1/3 × 9/2

x = 3/2

x= 1 1/2 liters of milk

Therefore, 1 1/2 liters of milk is required to fill the jug

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3 years ago

Make the variable in the brackets as the subject of each of the following formulae mx + 2x = 6

Airida [17]

Answer:

See Explanation

Step-by-step explanation:

Given

$mx + 2x = 6$

Required

Make the variable in bracket the subject

From the given expression, none of the variables (m and x) are in brackets.

So, I will solve for m and then solve for x

Solving for m:

$mx + 2x = 6$

Subtract 2x from both sides

$mx = 6 - 2x$

Divide both sides by x

$m = \frac{6 - 2x}{x}$

Solving for x:

$mx + 2x = 6$

Factorize

$x(m+2)= 6$

Divide both sides by m + 2

$x = \frac{6}{m+2}$

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3 years ago