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Afina-wow [57]
3 years ago
15

I don’t understand 2(2a-7b) do we put it as 4a-18b or 4a-18

Mathematics
1 answer:
Gwar [14]3 years ago
7 0

Answer:

2(2a-7b) = 4a-14b

Step-by-step explanation:

You have to multiply both the numbers inside brackets (2a,7b) with 2 .....

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A princess hat for a costume is shaped like a cone. The base of the cone is 12 in across and the height is 8
LenaWriter [7]

Answer:

Part a) The drawn in the attached figure

Part b)The slant height of the outside edge is x=10\ in

Step-by-step explanation:

Part a) The drawn in the attached figure

Part b) What is the slant height of the outside edge?

we have that

The diameter of the base of the cone is 12 in

so

r=12/2=6\ in ----> the radius is half the diameter

h=8\ in

Applying the Pythagoras Theorem find the slant height x

x^{2}=r^{2}+h^{2}

substitute the values

x^{2}=6^{2}+8^{2}

x^{2}=100

x=10\ in

8 0
4 years ago
Joe ran 2 miles in 16 minutes. At this rate how long did it take him to run 5 miles.
hodyreva [135]

Answer:

40min

Step-by-step explanation:

Since the ratio is 2:16, we want simplify. both 2 and 16 are dividable by 2.

2 / 2 = 1

16 / 2 = 8.

Now we can use the ratio 1 mile per 8 min. We want the rate of how many min to miles, so we'd multiply 5 by 8 which equals 40.

Therefore it takes him 40min to run 5 miles.

Hope this helps!

5 0
3 years ago
Solve: 1/4 a = 4/15 ​
ValentinkaMS [17]

Answer:

a = 1 1/15

Step-by-step explanation:

1/4 a = 4/15

Multiply each side by 4 to isolate a

4 * 1/4a = 4 * 4/15

a = 16/15

a = 1 1/15

6 0
3 years ago
In a class 5/8 of pupils are boys.If 15 girls are in that class how many boys are there​
Kobotan [32]

Answer:

25

Step-by-step explanation:

If 5/8 are boys then

1 - 5/8 = girls

3/8 = girls

3/8 of the total are girls

Let x = total

3/8 ( x) = 15

8/3 * 3/8 * x = 15 * 8/3

x = 40

There are 40 total students

5/8 are boys

5/8 * 40

25 are boys

5 0
3 years ago
Noah Beck starred as Dixie D'Amelio's love interest in her "Be Happy" music video.
Montano1993 [528]

Answer:

yes my answer is yes kind sir

7 0
4 years ago
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