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den301095 [7]
3 years ago
12

an electrician charges $55 per hour of electrical work plus a flat fee of 25$ as a service charge . if a customer's bill 190 whi

ch of the following is closest to the number of hours the electrician spent working on the job? A.3.0 B.3.5 C.4.0 D. 5.5 E.10.0
Mathematics
1 answer:
zhenek [66]3 years ago
7 0

Answer:

\large \boxed{\text{A. 3.0 h}}

Step-by-step explanation:

The bill          = $190

Less flat fee  =    25

Work done   = $165

\text{Hours worked} = \$165 \times \dfrac{\text{1 h}}{\$55} = \textbf{3.0 h}\\\\\text{The electrician was on the job for $\large \boxed{\textbf{3.0 h}}$}

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A pet supply store sells a 20-pound bag of dog food $23.44.Find the unit price.
satela [25.4K]

Answer:

1.172 dollars per pound

Step-by-step explanation:

Given : A pet supply store sells a 20-pound bag of dog food $23.44.

To Find :Find the unit price.

Solution :

Cost of 20-pound bag of food = $23.44

So, Cost of 1-pound bag of food = \frac{23.44}{20}

                                                     = 1.172

For unit price we should divide the cost by no. of pounds

So, the error is you have divided the no. of pounds by cost

Hence the unit price is 1.172 dollars per pound

7 0
3 years ago
A point whose x cordinate is zero will lie on options are x-axis ,y-axis and orgin​
kenny6666 [7]

Answer:

A point whose x coordinate is zero and y-coordinate is non-zero will lie on the y-axis.

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3 years ago
Which of the following statements about the relationship between an interior angle of a polygon and its adjacent exterior angle
Nezavi [6.7K]

Answer:

The sum of the interior angle measures of a triangle

is 180°. You can find the sum of the interior angle

measures of any n-gon, where n represents the

number of sides of the polygon, by multiplying

(n - 2) 180°. In a polygon, an exterior angle forms a

linear pair with its adjacent interior angle, so the

sum of their measures is 180°. In a triangle, the

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Step-by-step explanation:

4 0
3 years ago
Rewrite the expression -2a(a+b-5)+3(-5a+2b)+b(6a+b-8)
Nimfa-mama [501]
First separately:
-2a(a+b-5) = -2a^{2}-2ab+10a
3(-5a+2b) = -15a + 6b
b(6a+b+8) = 6ab+b^{2}+8b

Then you add then all together and get:
-2a^{2}-2ab+10a-15a + 6b+ 6ab+b^{2}+8b =
-2a^{2}-5a+4ab+14b+b^{2}

5 0
3 years ago
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The square root of 36y^3 =
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The square roots of 36y^3 are plus and minus 6y^(3/2) .
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