Wich solid figure has only one base

Answers

Answer 1

Answer: The solid figures that have only base are cones and pyramids.

Hope this helps :)

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Determine if the ordered pair (6, 4) is a solution to the inequality y is greater than negative one half times x plus 7. Yes, because (6, 4) is above the line No, because (6, 4) is below the line Yes, because (6, 4) is on the line No, because (6, 4) is on the line

A local car wash is open 8 hours each day. It uses 1/3 of a container of wax for each car.

Answers

Answer:

22.7

Step-by-step explanation:

8*8.5=68

68/3

22.7

ta da

Step-by-step explanation:

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A concession stand sells hamburgers. The revenue from the hamburgers is (30x+45) dollar. The revenue from drinks is (63x+84) dollars. The price of a drink is $3. Write an expression that represents the number of drinks sold.

Answers

Answer:

Step-by-step explanation:

hello

HELP!!!With working out... what’s the values of a b and c

(2x+1)(ax+b)=(6x^2-5x+c)

Answers

Answer:

Step-by-step explanation:

(2x + 1)(ax + b) = 6x² - 5x + c

Expand the left side and put that half into standard form:

2ax² + 2bx + ax + b = 6x² - 5x + c

2ax² + (2b + a)x + b = 6x² - 5x + c

So now look at the x terms. We have "2a" x² on left and 6 x² on right, so:

2a = 6

a = 3

Then look at the x terms, those coefficients will then be equal:

2b + a = -5

2b + 3 = -5

2b = -8

b = -4

and finally, then non-x terms are equal:

b = c

-4 = c

so:

a = 3, b = -4, c = -4

A train has an average speed of 18 miles per hour. How long will it take to travel 270 miles?

Answers

It will take 15 hours. Because the train has a speed of 18 mph, you just have to divide 270 by 18 which makes 15. The train goes 18 mph, so it is 15 hours.

Step-by-step explanation:

1.) First, you need to find how many miles per hour (18), and how many miles (270)

2.) Next, you will need to divide 270 by 18, or 270/18.

3.) This will show you how many 18's you can get out of 270, or how many hours it will take to go 270 miles.

4.) After dividing, you will get 15.

Therefore, it will take you 15 hours to get from point A to point B.

An electrical tower casts a 120-foot shadow. At the same time, a 10-footstreet sign casts a shadow of 8 feet. What is the height of the tower?

O A. 270 ft
O B. 150 ft
O C. 120 ft
O D. 180 ft

Answers

Set up a ratio with the height over the shadow.

Let the height of the tower be X

The ratio of the tower is x/120

The ratio if the sign is 10/8

Set them to equal and solve for x:

x/120 = 10/8

Cross multiply:

8x = 1200

Divide both sides by 8:

x = 1200/8

x =150

The answer is B. 150 ft.

Answer:

B. 150 feet.

Step-by-step explanation:

The tower and the street sign and their shadows form 2 similar triangles.

So the corresponding lengths are in the same ratio, then:

120 / 8 = h / 10 where h is the height of the tower.

8h = 120 * 10

h = 120 * 10 / 8

= 150 feet.

the flat head rail tunnel in Montana is about 7 3/4 miles long. A train travels at a speed of 3/4 miles per minute. How long Will it take the train to go through the tunnel?

Answers

Answer:

10 minutes 20 seconds

Step-by-step explanation:

It is given that the flat head rail tunnel in Montana is about $7(3)/(4)$ miles long.

Length of rail tunnel = $7(3)/(4)=(28+3)/(4)=(31)/(4)$

A train travels at a speed of 3/4 miles per minute.

$Speed=(3)/(4)$ miles

The formula for time is

$Time=(Distance)/(Speed)$

$Time=((31)/(4))/((3)/(4))$

$Time=(31)/(3)$

$Time=10(1)/(3)$

$(10(1)/(3))\text{ minutes}=10 \text{ minutes}+(1)/(3)\text{ minutes}=10 \text{ minutes}+20\text{ seconds}$

Therefore, the time taken by the train to go through the tunnel is 10 minutes 20 seconds.

Just divide 7 3/4 by 3/4. Turn 7 3/4 into a improper fraction which will be 31/4, and then divide by 3/4. The answer is 31/3 as an improper fraction and as a proper fraction the answer is 10 1/3

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