3 years ago

Some one plz help me 25 points

Mathematics

1 answer:

qaws [65]3 years ago

5 0

C, a²+b²=c²

why does this have to be 20 characters long

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Solving equations and distributive property

Tomtit [17]

Answer:

x=20

Step-by-step explanation:

2(x+10)=60

distribute 2 by multiplying numbers in parenthesis

2x+20=60

subtract 20 from both sides

2x=40

divide both sides by 2

----------

x=20

----------

4 0

3 years ago

Tamara and Amir shared a candy bar. Tamara ate two fifths. Amir ate two fifths. How much is left?

marin [14]

Answer:

1/5

Step-by-step explanation:

Both Amir and Tamara ate 2/5 each.

2/5 + 2/5 = 4/5

If 4/5 of the candy bar was eaten, 1/5 of the candy bar remains because

5/5 - 4/5 = 1/5

(Remember that 5/5 just equals one whole, representing the whole candy bar)

7 0

3 years ago

The length of a metal rod is 9 3/4 feet. What is the length of 1/4 of the rod?

7nadin3 [17]

Answer:

2 $\frac{5}{16}$

Step-by-step explanation:

2 $\frac{5}{16}$ × 4 = 9 3/4

9 3/4 × 1/4 = 2 5/16

I hope this helps!

3 0

2 years ago

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Ana drew a map of the Panama Canal. In the scale Ana used for the map, 4 centimeters represents 20 kilometers. The actual length

yawa3891 [41]

Answer:

Length of the canal on the map is 16.4 centimeters.

Step-by-step explanation:

If actual length of Panama Canal = 20 kilometers

and length of the canal on map = 4 centimeters

Then scale factor = $\frac{\text{Length of canal on map}}{\text{Actual length of canal}}$

= $\frac{4}{20}$

= $\frac{1}{5}$

If the actual length of Panama Canal = 82 kilometers

Then the length of canal on the map = Actual length × Scale factor

= $82\times \frac{1}{5}$

= 16.4 centimeters

Therefore, length of the canal on the map is 16.4 centimeters.

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3 years ago

Max has 5 red model cars. One third of his model cars are red. How many model cars does he have?

lara [203]

15. 5 times 3 is 15.
If you check, 15 divided by 3 is 5(red cars).

7 0

3 years ago

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