2 years ago

Which one is incorrect?

Mathematics

1 answer:

drek231 [11]2 years ago

7 0

All of the answers here

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Dan earns £9.70 per hour. How much will he earn for 5 hours work?

Mademuasel [1]

Answer:

48.50

Step-by-step explanation:

9.70 x 5

8 0

3 years ago

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Mr.Nguyen saves $120 of his income of 800.00 what percent of his income does Mr.Nguyen save?

zhuklara [117]

Nguyen saves 15% of his income

<h3>How to determine the percentage?</h3>

The given parameters are:

Savings = $120

Income = $800

The percentage saved is calculated as:

Percentage = Savings/Income * 100%

This gives

Percentage = 120/800 * 100%

Evaluate

Percentage = 15%

Hence, Nguyen saves 15% of his income

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1 year ago

Solve the following system of equations: −2x + y = 1 −4x + y = −1

Katyanochek1 [597]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}-2x+y=1\\-4x+y=-1&\text{change the signs}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}-2x+y=1\\4x-y=1\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad2x=2\qquad\text{divide both sides by 2}\\.\qquad x=1\\\\\text{Put it to the first equation:}\\\\-2(1)+y=1\\-2+y=1\qquad\text{add 2 to both sides}\\y=3$