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asambeis [7]
3 years ago
7

Two mechanics worked on a car.The first mechanic charged $85 per hour, andthe second mechanic charged $70 per hour.The mechanics

worked for a combinedtotal of 20 hours, and together they charged a total of $1625.How long did each mechanic work?
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
5 0
70x+85(20-x)=1625
Solve for x
X=5 for 70

X=15 for 85
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According to the graph about _____ of households in Africa owns a computer in 2008.
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Answer:

According to the graph about <u>5 percent</u> of households in Africa owns a computer in 2008.

2013 about 1/3 of all households in <u>Asia</u> had a computer.

The number of households with a computer is <u>increasing</u> in all regions overtime.

8 0
3 years ago
Given:
notsponge [240]

A line <u>bisector</u> is a <em>straight </em>line that <u>divides</u> a given line into two equal parts. Thus the following steps are required by Naomi to show that point D is <em>equidistant</em> from points  A and C.

BD ⊥ AC (given)

BD = 3 units, and AC = 8 units.

BD is the <em>perpendicular</em> bisector of <u>segment</u> AC (given)

Thus,

<BDA  ≅ <BDC <em>(right</em> angles formed by a <u>perpendicular</u> bisector)

AD ≅ DC <em>(equal</em> parts of a<em> bisected l</em>ine)

AD ≅ DC = 4 units

Thus joining <u>points</u> B to A, and B to C,

BA ≅ BC.

So that applying <em>Pythagoras</em> theorem to ΔABD, we have:

/hyp/^{2} = Adj 1^{2} + Adj 2^{2}

AB^{2} = 3^{2} + 4^{2}

       = \sqrt{25}

 AB      = 5 units

So that,

BA ≅ BC = 5 units

Therefore, it can be <u>concluded</u> that point D is <em>equidistant</em> from points A and C.

For more clarifications on a perpendicular bisector of a line, visit: brainly.com/question/929137

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3 0
2 years ago
show three different ways to compose a sum of 1. use two fractions that have 8 as a denominator. explain your answer
Ronch [10]
A sum means adding, so we will just pick three different ways to add to 1.

1.
1/8 + 7/8 = 1

2.
3/8 + 5/8 = 1

3.
4/8 + 4/8 = 1
7 0
3 years ago
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valkas [14]
1. The dimensions of the rectangle are 3 units by 4 units.

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3 years ago
When evaluting an expression, is it easier to combine terms first or substitute values first? PLSSSS ANSWERRR ILL GIVE BRAINLIES
Zarrin [17]

Answer:

What do you mean by combining terms?

If you have an equation like y=3(2+x), then you would need to substitute for x before you combined the terms "2" and "x"

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