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2 years ago

What is the solution to the equation 8r + 6 = 2?

Mathematics

2 answers:

topjm [15]2 years ago

8 0

Answer:

r = - $\frac{1}{2}$

Step-by-step explanation:

8r + 6 = 2 ( subtract 6 from both sides )

8r = - 4 ( divide both sides by 8 )

r = $\frac{-4}{8}$ = - $\frac{1}{2}$

vitfil [10]2 years ago

5 0

Answer:

=−12

Step-by-step explanation:

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2 years ago

A garden supply store sells two types of lawn mowers. Total ales of mowers for the year were $8379.70. The total number of mower

Anestetic [448]

Answer:

The number of small mowers are 19 and the large mowers are 11.

Step-by-step explanation:

Given:

A garden supply store sells two types of lawn mowers. Total sales of mowers for the year were $8379.70. The total number of mowers sold the 30. The small mower cost $249.99 and the large mower costs $329.99.

Now, to find the number of each type of mower sold.

Let the number of small mower be $x.$

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$x=30-y\ \ \ ....(1)$

Now, the total sales of mowers are:

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Substituting the value of $x$ from equation (1) we get:

$249.99(30-y)+329.99y=8379.70$

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$7499.7+80y=8379.70$

<em>Subtracting both sides by 7499.7 we get:</em>

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<em>Dividing both sides by 80 we get:</em>

$y=11.$

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Now, to get the number of small mowers we substitute the value of $y$ in equation ( 1 ):

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Answer:

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Continue to split the group that has the fake coin into 3 groups, each group has 1 coin. Now apply the same procedure and we can identify the fake coin.

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