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2 years ago

Select the best estimate that would help you check the answer to 778×23

Mathematics

1 answer:

tia_tia [17]2 years ago

8 0

Answer:

C: 800 x 20

Step-by-step explanation:

Basically, when you round 778 you see that the 7 and 8 are above 5, which means you round upwards. Therefore it would be best to round up to 800.

Then the 3 in 23 is below 5, meaning you round downwards. 20 Is the closest and best option.

So, C: 800 x 20 is best to do!

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Convert 12500 euros into cedis at rate of 1 euro is equal to 4.9 cedis

Dafna1 [17]

Answer:

12,500 euro = 61,250 cedis

Step-by-step explanation:

1 euro = 4.9 cedis

12500 euro = 4.9 * 12500 cedis

12,500 euro = 61,250 cedis

8 0

3 years ago

Consider the statement "2 is a factor of n2 + 3n."

deff fn [24]

Answer:

The answer is the last one:

4 , 10 , 18 , (k + 1)² + 3(k + 1) and k² + 5k + 4

Step-by-step explanation:

∵ 2 is a factor of n² + 3n

∵ n = 1 ⇒ ∴ (1)² + 3(1) = 1 + 3 = 4 ⇒ 2 is a factor of 4

∵ n = 2 ⇒ ∴ (2)² + 3(2) = 4 + 6 = 10 ⇒ 2 is a factor of 10

∵ n = 3 ⇒ ∴ (3)² + 3(3) = 9 + 9 = 18 ⇒ 2 is a factor of 18

∵ n = k + 1 ⇒ ∴ (k + 1)² + 3(k + 1) ⇒ before the simplify

∵ n = k + 1 ⇒ ∴ k² + 2k + 1 + 3k + 3 = k² + 5k + 4 ⇒ after simplify

5 0

2 years ago

3 cans that store 9 tennis balls... Find the constant of proportionality & write a equation to represent the relationship PL

Lilit [14]

3 cans store 9 tennis balls.
Find the Constant of proportionality and write and equation with regards to this given situation:
=> number of tennis balls = 9
=> number of cans = 3

 So the constant of proportionality is in the working column. Pls see attached.

7 0

3 years ago

The table shows a proportional relationship.

Ann [662]

X + (.8 x 1/2 of x) = y

5 0

3 years ago

True or false:

BaLLatris [955]

True. They do not share a point or side.

7 0

2 years ago

Read 2 more answers