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Dahasolnce [82]
3 years ago
13

A road crew must repave a road that is 4/5 miles long. They can repave 1/20 miles each hour. How long will it take the crew to r

epave the road? Write your answer in simplest form.
Mathematics
1 answer:
vichka [17]3 years ago
5 0
Let's set these equations up first before anything.
4/5 mi and 1/20 mi per hour.
Multiply 4/5 by a number that will get your denominator (5) to 20.
5 x 4 is 20, so multiply 4/5 by 4.
16/20 miles, or, 16 hours, since 1/20 mi is made per hour.
Your answer is 16 hours.
Hope this helps :)
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With the information given, we deduce that the parabola is

y=-(x-3)^2+4 = -(x^2-6x+9)+4 = -x^2+6x-5

Reflecting a function over the x axis means to change its sign. After the reflection, the parabola becomes

y=x^2-6x+5

And to shift down a function, you subtract the shift from the equation: the equation becomes

y=x^2-6x+5-2=x^2-6x+3

Similarly, the other function is reflected over the x axis (sign change) and shifted up 3 (add 3 to the equation):

|x+2|\mapsto -|x+2|\mapsto -|x+2|+3

In order to compute the y intercept, we simply have to evaluate the functions at x=0: for the parabola we have

y(0)=3

For the other function, we have

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8 0
3 years ago
F(x)=2(x)^2+5 sqrt (x+2)<br><br> f(0)
krek1111 [17]
F(0) = replace every x with 0

2 ({0})^{2}  + 5 \sqrt{0 + 2}  \\  = 2 + 5 \sqrt{2}
=9.0710678119
=9.07
7 0
2 years ago
100*.005<br><img src="https://tex.z-dn.net/?f=100%20%5Ctimes%20.005" id="TexFormula1" title="100 \times .005" alt="100 \times .0
andrew11 [14]
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7 0
3 years ago
Please look at the questions again! Some of the answers are incorrect. Here is a hint: For question 1, you should not spend more
baherus [9]

Answer:question 1)$6.66.67

Question2) Rent and expenses =$760

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Step-by-step explanation:

1)$2000×(1/3)= $666.67

2)Rent and expenses =$(650+60+10+20+20)= $760

$2100×(1/3)= $700

Rent and expenses should not exceed one third of $2100, which is $700 but it exceeded by$60. Therefore budget is too high.

5 0
3 years ago
Graph y=-1/2x-6 WILL GIVE BRAINLIEST
user100 [1]
This is the graph for that

6 0
3 years ago
Read 2 more answers
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