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valkas [14]
3 years ago
7

A 30 minute TV program consists of three commercials, each 2 1/2 minutes long, and four equal length entertainment segments. How

long is each entertainment segment?
Mathematics
1 answer:
Nezavi [6.7K]3 years ago
8 0

Answer:

6 3/8

Step-by-step explanation:

first, 30 minutes minus 2 1/2 equals to 27 1/2

second, 27 1/2 divide by four equals to 6 3/8

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Which polygons are NOT quadrilaterals? Select THREE that apply.
Afina-wow [57]

Answer:

a cylinder, a sphere, and that little half sphere thing, oh and a triangular pyramid

Step-by-step explanation:

6 0
3 years ago
Carol is going to make a wooden pyramid and then paint it. She drew the net of a square pyramid as shown below to help her plan
rodikova [14]

The given pyramid's total surface area is 3. 24.0 square feet.

Step-by-step explanation:

Step 1:

To calculate the surface area of the given figure, we need to find the surface areas of the different shapes in the figure.

There are 3 triangles and 1 square in the figure.

Step 2:

All the triangles are similar.

The surface area of a triangle = \frac{1}{2} (baselength)(height).

The similar triangles have a base length of 3 feet and a height of 2.5 feet.

The surface area of 1 similar triangle = \frac{1}{2} (3)(2.5)= 3.75 square feet.

The surface area for all the similar triangles = 3.75 (4) = 15 square feet.

Step 3:

The surface area of a square is the square of its side length. The square has a side length of 3 feet.

The surface area of the square = a^{2} = 3^{2} =9 square feet.

Step 4:

To calculate the total surface area we sum up all the individual surface area.

The total surface area = 15 + 9 = 24 square feet which is the third option.

3 0
2 years ago
6x+4y=42 -3x+3y=-6 by elimination
creativ13 [48]

Answer:

x=5, y=2

Step-by-step explanation:

To solve this system, we need to find x and y. First, let's find x. In the first equation (6x+4y=42), subtract 4y on both sides to isolate 6x. This will result in 6x=42-4y. Divide by 6 on both sides to isolate x and get x=7-\frac{2}{3}y. Now we know what x equals. Go to the second equation ad plug this into it. So instead of -3x+3y=-6, you'll have -3(7-\frac{2}{3}y)+3y=-6. Use the distributive property to get -21+2y+3y=-6. Add 2y and 3y to get -21+5y=-6. Add 21 to both sides to isolate 5y and get 5y=15. Divide by 5 on both sides to isolate y and get y=3. Now that we know that y=3, we can plug this back into the equation that was bolded above so that we can find x, so we'll have x=7-\frac{2}{3}(3) since y=3, and we'll get x=7-\frac{6}{3}, or x=7-2, or x=5.

x=5

y=2

6 0
3 years ago
Read 2 more answers
3. Put the following numbers in order
PtichkaEL [24]

Answer:

3.85 x 10-7

8.53 x 10-5

0.00000538

3.58 x 10-6

Step-by-step explanation:

5 0
3 years ago
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Due in 30 minutes!!<br><br> Thank you:)
Fynjy0 [20]

Answer:

The 3rd one as it's cubic

8 0
2 years ago
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