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Andre45 [30]
2 years ago
10

When you round a number, which digit in the number helps you decide to round up or down?

Mathematics
1 answer:
Lena [83]2 years ago
3 0
When you round a number, the digit in the number that helps you decided to round up or down, is one digit to the right of the digit, you picked to round.

Rule -
Pick a digit to round up in the number. Move one space to the right of the digit you picked. Then, if the digit to the right is at least 5, meaning that if it’s above or equal to 5, then round the digit you picked up by 1. However if the digit to the right is lower than 5, then the digit you picked stays the same. Remember that anytime you round, either down or up, anything to the right of the digit, you picked becomes 0.

For example, let’s use the number, 1087, and we picked the digit 8. We have to look at the digit to the right, of the digit we picked, which is 7, to see if we need to round up or down. Since the number is above 5, then we have to round 8 up. Anything to the right of the 8 become 0.

Hope this helped!
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Y+7=2(x+5) in standard form ​
Cerrena [4.2K]

Answer:

2x-y=-3

Step-by-step explanation:

\mathrm{The\: standard\: form\: of\: a \:linear \:equation \:is}:\mathrm{A}x+\mathrm{B}y=\mathrm{C.}

\underline{\sf{Solve\:for\:}y}:

y+7=2(x+5)

=y+7=2x+2\cdot5

= y+7=2x+10

=(y+7)+(-7)=(2x+10)+(-7)

=y+7-7=2x+10-7

\underline{y=2x+3}

7 0
2 years ago
A car is bought at the price of $45,000. The price decreases at the rate of .25 every year (t). Which equation matches this expo
Solnce55 [7]
B. f(t) = 45,000(.75)t
7 0
3 years ago
Leo's age is three times Stan’s age. In five years, Leo will be twice as old as Stan. How old is each now?
aleksandr82 [10.1K]

Answer:


Step-by-step explanation:

L=3S

In 5 years,

L+5=2(S+5)

L+5=2S+10

L=2S+5

 Substituting from above,

3S=2S+5

S=5

So then,

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6 0
3 years ago
M=7,r=8, t=2 ; mr/t = what
galina1969 [7]

Answer:

28

Step-by-step explanation:

Plug in the corresponding numbers to the corresponding variables. Note that:

m = 7

r = 8

t = 2

mr/t = (7 * 8)/2

(7 * (8/2)) = 7 * 4 = 28

28 is your answer.

~

4 0
3 years ago
What is the unit rate of 42 dollars for 3 books?
USPshnik [31]
42/3 = 14

I think the unit rate is $14. 

I hope this helps! :D
8 0
3 years ago
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