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In-s [12.5K]
3 years ago
10

21. A plumber charges a flat fee plus a cost per hour. Customer 1 is charged $114

Mathematics
2 answers:
gulaghasi [49]3 years ago
5 0

Answer:

B. $254

Step-by-step explanation:

Flat Fee: $30    

Cost per hour: $28

Customer 1: 3(28) + 30 = 114

Customer 2: 5(28) + 30 = 170

Customer 3: 8(28) + 30 = 254

sukhopar [10]3 years ago
4 0
C 284. Nnnnnnnnnn I need to but 25 letters so. Wkjejsjejwnwns
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How do you find vertical, horizontal and oblique asymptotes for f(x) = (5x-15 )/ (2x 14)?
Andrei [34K]
For vertical asymptotes, find the values which make the function indetermine in this case x=-7,so this is the only vertical asymptote.
For horizontal asymptotes, find the limit when x tends to infinity:
=(5x/x-15/x)/(2x/x+14/x) = 5/2, this is the horizontal asymptote y=5/2
For obliques, you have to meet the degree of the numerator is exactly a greater degree than the denominator, in this case they are the same degree so no oblique asymptote.
6 0
3 years ago
A supply company manufactures copy machines. The unit cost C (the cost in dollars to make each copy machine) depends on the numb
sergij07 [2.7K]

Answer: \$18,629

Step-by-step explanation:

Given

The unit cost is given by

C(x)=0.6x^2-168x+30,389

find the derivative of the unit cost and equate it to zero to obtain the minimum value

C'(x)=0.6\times 2x-168\\\Rightarrow 0.6\times 2x-168=0\\\Rightarrow 1.2x=168\\\\\Rightarrow x=\dfrac{168}{1.2}\\\\\Rightarrow x=140

Substitute 140 for x in the cost function, we get

C(140)=0.6[140]^2-168(140)+30,389\\C(140)=11,760-23,520+30,389\\C(140)=\$18,629

7 0
3 years ago
Convert 600 bags of cement to tons
kicyunya [14]

Answer:

the 600 bags of cement would weigh 25.5826 tonnes

8 0
3 years ago
Read 2 more answers
Plz I need help with this I am struggling failing math
Goryan [66]

Answer:

CB = 5, m\angle{BDA} = 23^\circ

Step-by-step explanation:

Assuming that the marks next to angle D mean that \angle{BDA} \cong \angle{BDC}, then there is enough information to conclude that the two right triangles are congruent (HA theorem--hypotenuse/angle).

Then all the corresponding parts of the two triangles are congruent, including segments BA and BC, making them the same length.

4x + 1 = 9x - 4

Solving for x,

1 = 5x - 4

5 = 5x

1 = x

Pluggint x = 1 into the two expressions reveals that the length of segment CB is 5.

The two small angles at D are congruent, so m\angle{BDA}=23^\circ.

8 0
3 years ago
A bag contains white marbles and red marbles, 20 in total. The number of white marbles is 5 more than 2 times the number of red
Nitella [24]

Answer:

15

Step-by-step explanation:

let r represent red marbles then white = 2r + 5 and total is 20, thus

r + 2r + 5 = 20 ( subtract 5 from both sides )

3r = 15 ( divide both sides by 3 )

r = 5 ← number of red marbles

Thus number of white = 20 - 5 = 15

7 0
4 years ago
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