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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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Based on the work shown on the right, check all of the possible solutions of the equation.
Mazyrski [523]

Incomplete question. However, here is a similar question attached.

Solve 3x^2 + 17x - 6 = 0.

Based on the work shown to the left, which of these values are possible solutions of the equation? Check all of the boxes that apply

A X=-6

B X=6

C X=-1/3

D X=1/3

E X=0

Answer:

A and D

Step-by-step explanation:

Note that such question requires using completing the square method of solving equations. By using the values X= -6 and X= 1/3 we arrive at a solution.

7 0
3 years ago
On a sheet of paper, you have 100 statements written down.
serg [7]

Answer:

50

Step-by-step explanation:

If the first statement its true (At most 0 of the statements are true), there are not true statements in the paper. So, the first statement its false.

Now, if the first statement its false, this mean there must be at least 1  true statement in the paper.

Now, if the second statement its true ( at most 1 of the statements are true) this implies that the third statement its true (if "at most 1" its true, then "as most 2" must be true).

If any statement (besides the first) its true, then all the statement that follows it must be true.

The first non false statement, then, must be the statement made by the person 51:  "At most 50 statements are true"

And the 49 statements that follows are true as well.

5 0
3 years ago
A researcher is interested in the lengths of Salvelinus fontinalis (brook trout), which are known to be approximately Normally d
kompoz [17]

Answer:

c. 0.1151

Step-by-step explanation:

d) the probability that, on average, fish are larger than 86 centimeters in length.The area under part of a normal probability curve is  directly proportional to probability and the value is calculated as

z = (x₁−x) /σ

where z = propability of normal curve

x₁ = variate mean = 86cm

x = mean of 80cm

σ = standard deviation = 5cm

applying the formula,

z= (86-80)/5

z = 6/5 =1.2

Using a table of partial areas beneath the standardized normal curve (see Table of normal curve, a z-value of 1.2 corresponds to an area of 0.3849 between the mean value. but, because the standard curve has 0.5, then will minus 0.3849 from 0.5= 0.5 - 0.3849 = 0.1151

Thus the probability of a fish are larger than 86 centimeters in length is 0.1151

5 0
3 years ago
PLEASE HELP! I REALLY NEED HELP!!!
Brums [2.3K]

Answer:

on which one?

5 0
3 years ago
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tiny-mole [99]

Answer:

24 as the denominator.

Step-by-step explanation:

6 goes into 24, 4 times.

8 goes into 24, 3 times.

7 0
3 years ago
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