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3 years ago

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Which expression describes the total distance hiked for a person who hiked 6 miles a day for d days? A. 6d B. 6 + d C. 6/d D. d

– 6

1 answer:

lyudmila [28]3 years ago

5 0

The best answer is a

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the percent p of the u.s. population with internet access is given by 25p-34t=1378 where t is the number of years after 1990. wh

Mashutka [201]

Answer:

Hence, 75.52 percent of the u.s. population had internet access in 2005.
After 25 years or in the year 2015 89% have internet access.

Step-by-step explanation:

the percent p of the u.s. population with internet access is given by:

25 p-34 t=1378

where t is the number of years after 1990.

We are asked to find what percent of the u.s. population had internet access in 2005 i.e. we need to find the value of p after 15 years i.e. t=15.

⇒ 25p-34×(15)=1378

⇒ 25p-510=1378

⇒ 25p=1378+510

⇒ 25p=1888

⇒ p=75.52

Hence, 75.52 percent of the u.s. population had internet access in 2005.

Next we are asked to find in what year will 89% have internet access?

i.e. we have to find the value of t when we are given p=89

⇒ 25×89-34t=1378

⇒ 2225-34t=1378

⇒ 2225-1378=34t

⇒ 847=34t

⇒ or 34t=847

⇒ t=24.9112≈25

Hence after 25 years 89% will have internet access.

i.e. in the year 2015 89% will have internet access.

3 0

3 years ago

Kendell went shopping and purchased 7 shirts, 3 pairs of pants, 2 jackets. How many different outfits are possible?

mr_godi [17]

Answer:

I dont know the answer but i have an explaination

Step-by-step explanation:

Kendall can mix the seven shirts with the two jackets which will give you fourteen possibilities for the upper part of the body, which can be mixed with 7 different options for the underpart of the body which give us a total of 98 possibilities. You need to multiply seven times two and the result that is fourteen times seven.

8 0

2 years ago

Jose just removed the children's playset from his back yard to make room for a rectangular garden. He wants to put a fence aroun

kipiarov [429]

<h3>Answer: 30 feet</h3>

===================================================

Explanation:

He has 90 feet of fencing overall. This is the perimeter of the rectangle as its the distance around all four sides.

Two of the opposite sides are the width = 15 ft. So we have 15+15 = 30 feet taken up and 90-30 = 60 feet left for the other two opposite sides to add to. Call each of those sides x

x+x = 60

2x = 60

x = 60/2

x = 30

The other side must be 30 feet long.

This rectangle is 30 by 15

perimeter = 30+15+30+15 = 45 + 45 = 90

which helps confirm we have the right answer

---------------

Or you can solve this way

P = 2*(L+W) is the perimeter of a rectangle with length L and width W

Plug in the perimeter P = 90 and the width W = 15. Solve for L

P = 2*(L+W)

90 = 2*(L+15)

2(L+15) = 90

L+15 = 90/2

L+15 = 45

L = 45-15

L = 30

7 0

3 years ago

MATH PROBLEM!! CAN SOMEONE HELP 25pts You roll two number cubes at the same time. Let X be a random variable that represents the

Vesna [10]

Answers:

(a) Possible values of X are: 0, 1, 2, 3, 4, 5

(b) See attached image below; specifically figure 2

(c) No, it is <u>not</u> symmetric

(d) As a fraction, the answer is 1/6. In decimal form, the answer is approximately 0.1667 (converts to roughly 16.67%)

=========================================

Explanations:

(a) The largest possible roll we can get on one die is 6, the smallest is 1, so the largest possible difference is 6-1 = 5. The smallest difference is 0 as we could get doubles (eg: both dice show a "3" at the same time). We can get any difference in between 0 and 5. So X can take on whole numbers from 0 to 5, ie, X can be any number from the set {0, 1, 2, 3, 4, 5}

(b) Consult the attached image. Figure 1 shows a 6 by 6 grid of values that represent all the possible ways to roll two dice. Each value in the interior of the grid is the result of subtracting the outer header values. Figure 2 is where the answer is shown for part b. The idea is that you list out the X values along the top of the table and the probability P(X) values along the bottom row. I show the work on how to compute each probability in the attachment. The probability is equal to the number of occurences over the number total. Example: X = 3 shows up 6 times out of 36, so P(X) is 6/36 = 1/6 when X = 3.

(c) The distribution is not symmetric as figure 3 shows a lop-sided diagram. The mode should be at the center, but this figure shows the mode off to the left side.

(d) Count how many copies of '4' or '5' show up in the interior of the grid shown in figure 1. There are four copies of '4' and two copies of '5'. Overall there are 4+2 = 6 instances of either '4' or '5'. This is out of 36 total, so 6/36 = 1/6 is the fractional form of the answer which approximates to 0.1667 and converts to 16.67% approximately.

4 0

3 years ago

Bill works for a large food service company. In one hour he can make 19 sandwiches or he can make 40 salads. Bill works 7 hours

wolverine [178]

Answer:

$x=216 salads$

Step-by-step explanation:

One Hour:

Salad=40

Sandwich=19

Total work time $T=7$

Generally

Time to make 30 sandwiches is

$T_s=\frac{30}{19}$

$T-s=1.6hours$

Therefore

Bill has 7-1.6 hours to make salads and can make x about of salads in

$x=(7-1.6)*40$

$x=5.4*40$

$x=216 salads$

7 0

3 years ago