Guest #10296

2 months ago

3x+6, you have to distribute the negative to get the parentheses away and simplify

Guest #10297

2 months ago

**Answer:**

3x+6

**Step-by-step explanation:**

you have to distribute the negative to get the parentheses away and simplify

Question

In a car how many miles do you go per day? How many days until you hit 10,000 miles?

Solution 1

I drive 25 miles per day

divide the number of miles per day by the total miles to find how long it will take:

10,000 miles / 25 miles per day = 400 days

divide the number of miles per day by the total miles to find how long it will take:

10,000 miles / 25 miles per day = 400 days

Solution 2

The Average American Driver drives 33.3 Miles per day. so take that statistic and divide it by 10,000 youll get 300 so like 10 months. but it depends on how much you drive a day, some people drive up to 88 miles a day

Question

A group consists of five men and seven women. four people are selected to attend a conference. a. in how many ways can four people be selected from this group of twelve?
b. in how many ways can four women be selected from the seven women?
c. find the probability that the selected group will consist of all women.0

Solution 1

A. That would be 12C4 = (12*11*10*9) / (4*3*2*1) = 495 ways

b. This is 7C4 = 7C3 = (7*6*5) / 6 = 35 ways

c. This would come to 7C4 / 12C4 = 35/495 = 7/99

b. This is 7C4 = 7C3 = (7*6*5) / 6 = 35 ways

c. This would come to 7C4 / 12C4 = 35/495 = 7/99

Question

Two cars leave towns 360 kilometers apart at the same time and travel toward each other. One car's rate is 12 kilometers per hour less than the other's. If they meet in 2 hours, what is the rate of the slower car?

Solution 1

Let x = speed of the first car

the second car is 12 km slower so the seconds car speed is x-12

they each drove 2 hours so 1st car = 2x

2nd car = 2(x-12)

they drove 360 km

so you have 2x + 2(x-12) = 360

solve for x

2x+2(x-12) = 360

2x + 2x-24 = 360

4x-24 = 360

4x = 384

x = 384/4

x = 96

1st car drove at 96 km per hour

slower car drove at 96-12 = 84 km per hour

the second car is 12 km slower so the seconds car speed is x-12

they each drove 2 hours so 1st car = 2x

2nd car = 2(x-12)

they drove 360 km

so you have 2x + 2(x-12) = 360

solve for x

2x+2(x-12) = 360

2x + 2x-24 = 360

4x-24 = 360

4x = 384

x = 384/4

x = 96

1st car drove at 96 km per hour

slower car drove at 96-12 = 84 km per hour

Question

Troy has a box of 600 tiny blocks. Each block is a cube with dimensions of 1 cm x 1cm x 1cm. The blocks are arranged in the box in rows and layers so that there are no gaps. Which could be the dimensions of the box? a. 5 cm x 10 cm x 12 cm
b. 5 cm x 10 cm x 10 cm
c. 10 cm x 10 cm x 12 cm
d. 200 cm x 200 cm x 200 cm

Solution 1

You need help or not lol

Question

Nearly 90 percent of the people of indonesia are _______.

Solution 1

Answer: Muslims

Total Muslims in Indonesia is approximately 207.2 million or 87.2 (90%) of the total population. Other religions recognized by the Indonesian government aside from Islam are Protestant, Catholic, Hindu, Buddhism, and Confucian which accounts for 6.9,2.9,1.7,.7 and .05% of the total population, respectively.

Religion is a mandatory personal data to the Indonesians.

Solution 2

**Answer:**

MUSLIMS

**Step-by-step explanation:**

Question

The volume of a cylinder is given by the formula v=pi r^2h, where r is the radius of the cylinder and h is the height. Which expression represents the volume of this cylinder? h=2x+7, r=x-3.

Solution 1

Substituting for r and h:-

volume = pi (x - 3)^2 * (2x + 7)

= pi* (2x + 7)(x^2 - 6x + 9)

= pi * (2x^3 - 12x^2 + 18x + 7x^2 - 42x + 63)

= (2x^3 - 5x^2 - 24x + 63) pi answer

volume = pi (x - 3)^2 * (2x + 7)

= pi* (2x + 7)(x^2 - 6x + 9)

= pi * (2x^3 - 12x^2 + 18x + 7x^2 - 42x + 63)

= (2x^3 - 5x^2 - 24x + 63) pi answer

Solution 2

Answer:

The person above is correct

Step-by-step explanation:

Question

Your favourite Tv station has ten minutes of commercials per hour. What is the expected number of times you could randomly select this channel without hitting a commercial?

Solution 1

The number of times you could randomly select this channel and not see a commercial is 5.

Question

Does anyone know where to find the poly-graphical point of a circle?

Solution 1

X = cx + r * cos(a)

y = cy + r * sin(a)

y = cy + r * sin(a)

Solution 2

It is the middle i think

Question

Pratap Puri rowed 14 miles down a river in 2 hours, but the return trip took him 3 and one half hours. Find the rate Pratap can row in still water and find the rate of the current. Let x equals rate Pratap can row in still water and y equals rate of the current. What is the rate that Pratap rows in still water?

Solution 1

Let the rate in still water be x and rate of the current be y.

speed down the river is:

speed=distance/time

speed=14/2=7 mi/h

speed up the river is:

speed=(14)/(3.5)=4 mi/hr

thus total speed downstream and upstream will be:

x+y=7...i

x-y=4.......ii

adding the above equations i and ii we get:

2x=11

x=5.5 mi/hr

thus

y=5-5.5=1.5 mi/r

thus the speed in still waters is 5.5 mi/hr

speed of current is 1.5 mi/hr

speed down the river is:

speed=distance/time

speed=14/2=7 mi/h

speed up the river is:

speed=(14)/(3.5)=4 mi/hr

thus total speed downstream and upstream will be:

x+y=7...i

x-y=4.......ii

adding the above equations i and ii we get:

2x=11

x=5.5 mi/hr

thus

y=5-5.5=1.5 mi/r

thus the speed in still waters is 5.5 mi/hr

speed of current is 1.5 mi/hr

Question

Find an explicit formula for the sequence 30\,,\,150\,,\,750\,,\,3750,...30,150,750,3750,...30, space, comma, space, 150, space, comma, space, 750, space, comma, space, 3750, comma, point, point, point.

Solution 1

The series shown is an geometric series and the explicit formula is given by:

an=ar^(n-1)

where

a=first term

n=number of terms

r=common ratio

from the sequence:

a=30

r=5

thus the explicit formula will be:

an=30(5)^(n-1)

hence the answer is:

an=30(5)^(n-1)

an=ar^(n-1)

where

a=first term

n=number of terms

r=common ratio

from the sequence:

a=30

r=5

thus the explicit formula will be:

an=30(5)^(n-1)

hence the answer is:

an=30(5)^(n-1)

Solution 2

**Answer:750+3750=4,500**

**Step-by-step explanation:**

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