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Marrrta [24]
3 years ago
7

How do you estimate21× 78

Mathematics
1 answer:
finlep [7]3 years ago
8 0

21 *78=

20 * 80=

1600 as an estimate


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What is 3×1 and 3/5<br><br>A) 2 and 2/5<br>B) 4 and 3/5<br>C) 4 and 4/5<br>D) 7 and 4/5
Bas_tet [7]
Option C is your answer. 

1 3/5 is the same as 8/5

3(8/5) = 24/5 = 4 and 4/5
3 0
3 years ago
carly walks 30 feet in seven seconds. At this rate, how many minutes will it take for carly to walk a mile if there are 5,280 fe
LenaWriter [7]

Answer:

20.53 minutes

Step-by-step explanation:

Speed = Distance/Time = 30/7

Time = Distance / Speed

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= 1232 seconds / 60 = 20.53 minutes

Answered by Gauthmath

4 0
2 years ago
X - 4y = 28<br> 2x + y =2
Tresset [83]
X - 4y = 28
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2 years ago
A booster club sells raffle tickets • Before tickets go on sale to the public, 120 tickets are sold to student athletes. • After
GaryK [48]

Answer:

The top graph.

Step by step:

Before the tickets go on sale, 120 tickets were already sold.

After that, the tickets sell at a constant rate for a total of 8 hours.

At the end of this time, all the tickets were sold (we have 0 tickets left)

If x (horizontal axis) represents the hours since tickets go on sale, and y (vertical axis) represents the number of raffle tickets sold.

Then, at x = 0, we should already see y = 120

Because we start with 120 tickets sold.

Then, as x increases, the number of tickets sold also should increase, until we get x = 8 hours, where y stops increasing because all tickets are already sold.

Then we should have an increasing line that stops increasing at x = 8 hours.

Then the correct option is the above graph, where we have:

An increasing line.

y = 120 in the vertical axis (y = 120 when x = 0)

3 0
2 years ago
Please help! :)
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Answer:

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Step-by-step explanation:

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3 0
3 years ago
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