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creativ13 [48]
3 years ago
10

Can someone plzzz help me with number 7 and the bottom ones plzzz and show work for number 7 plzzzz

Mathematics
1 answer:
Georgia [21]3 years ago
3 0

Answer:

number 7: always bisect

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Simplify.<br>5(x+2) + 2(x-5)<br><br>Α.7x-3<br>B. 7x<br>C 7x+ 20<br>D.0<br>Ε. 2x +4​
FrozenT [24]

Answer:

B=7x

Step-by-step explanation:

5(x+2)+2(x-5)

5x+10+2x-10

since 10-10=0, it just won't show, there's no need to say "0"

5x+2x+10-10

7x+0

so just

7x

4 0
3 years ago
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Find the volume of the following. Please round your answer to the nearest tenth. Please do not put units.
Mars2501 [29]

Answer:

The volume of the given figure is 150 mm³

Step-by-step explanation:

The formula of the volume of the triangular pyramid is V = \frac{1}{3} AH, where

  • A is the area of its base
  • H is its height

The formula of the area of a triangle is A = \frac{1}{2} bh, where

  • b is the length of its base
  • h is the length of its height

In the given figure

∵ The pyramid has a triangular base

∵ The triangle has a base of 12 mm and a height of 7.5 mm

∴ b = 12 mm and h = 7.5 mm

→ By using the 2nd formula above, find the area of the base

∴ A = \frac{1}{2} (12)(7.5)

∴ A = 45 mm²

∵ The height of the pyramid is 10 mm

∴ H = 10 mm

∵ A = 45 mm²

→ Substitute them in the first formula above to find the volume

∴ V = \frac{1}{3} (45)(10)

∴ V = 150 mm³

∴ The volume of the given figure is 150 mm³

4 0
3 years ago
Please help...given that elm and oak street are parallel, find m
jarptica [38.1K]

Answer:

<em>102°</em>

Step-by-step explanation:

(3x - 12)° + (2x + 2)° = 180°

5x - 10 = 180 ⇒ x = 38

m∠A = (3x - 12)°

<em>m∠A</em> = (3×38 - 12)° = <em>102°</em>

6 0
3 years ago
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the ratio of manjo juice to guava juice in paradise punch is 5 to 3. Leilani has 32 fl oz of manjo juice. how much guava juice d
rodikova [14]

Originally the ratio is 5:3, but we can make this ration 5x:3x because its equal. By doing so, we know that 5x+3x=32.

Now just solve the equation:

5x+3x=32

8x=32

x=4.

Now insert x into ratio.

Since she needs 3x of guava juice, she needs 3*4 fl oz of guava juice. She need 12 fl oz of guava juice.

Answer:

12 FL OZ of guava juice.

8 0
3 years ago
What do a decimal number and a thumbtack have in common
Natalka [10]
They are round 
that would be your best answer
5 0
3 years ago
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