2 years ago

ITZZZ EAZY PLZZZ What is a system of equations? What is a system of inequalities?

Mathematics

1 answer:

DENIUS [597]2 years ago

4 0

Answer:

it isn't easy because there are no options to choose from.

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valentina_108 [34]

Your answer is gram hope this helps that is what unit to use :)

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(sin30°+cos30°)-(sin60°cos60°) find the value

professor190 [17]

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1 year ago

Two mechanics worked on a car. The first mechanic charged $65 per hour, and the second mechanic charged $90 per hour. The mechan

Katena32 [7]

Answer:

First mechanic worked 20 hours and second mechanic worked 5 hours

Step-by-step explanation:

Let the number of hours the first mechanic worked = $a$

Let the number of hours the second mechanic worked = $b$

Therefore, we can write 2 equations and then solve them simultaneously:

$a+b=25$

$65a+90b=1750$

Rearranging the first equation: $a=25-b$

and substituting into the second equation to find $b$ :

$65(25-b)+90b=1750$

$1625-65b+90b=1750\\
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b=5$

Now sub $b=5$ into the first equation to find $a$

$a+5=25\\
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Therefore, first mechanic (a) worked 20 hours and second mechanic (b) worked 5 hours

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1 year ago

What is the value of each expression in the simplest form? -11/15 + (-2/15)

Liula [17]

Answer:

$\frac{ - 13}{15}$

Step-by-step explanation:

$\frac{ - 11}{15} + \frac{ - 2}{15} = \frac{( - 11 - 2)}{15} = \frac{ - 13}{15}$

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2 years ago