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oee [108]
3 years ago
11

Why do you sometimes need to regroup in 3 digit addition problems

Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
6 0
Because for example 349+567 is something you need to regroup.You start by the ones.9+7=16. You don't always need to regroup though
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Help pls need answer
blagie [28]

Answer:

a

Step-by-step explanation:

idk

4 0
3 years ago
Which of the following is not a possible r-value -0.3 -1.6 0.8 0.3
Sliva [168]

Answer: -1.6 is not a possible r-value.

Step-by-step explanation:

R-values range from -1 to +1. Out of all these numbers, -1.6 does not belong. Hence, -1.6 is not a r-value.

3 0
3 years ago
2.
Jet001 [13]

Answer:

119.2

Step-by-step explanation:

Given the following :

Mean (m) = 100 years

Standard deviation (sd) = 15 years

closest to the age of a Galápagos Islands giant tortoise at the 90th percentile of the

distribution?

Obtain the Zscore for 90th percentile (0.90) on the z table = 1.28

Zscore = (X - mean) / standard deviation

1.28 = (X - 100) / 15

1.28 × 15 = X - 100

19.2 = X - 100

19.2 + 100 = X

X = 119.2

3 0
4 years ago
21. Carrie withdraws $10 from her account each day for 7 days.
Fiesta28 [93]

Answer:

a.70. b.50

Step-by-step explanation:

  • If Cartie takes $10 from her account for 7 days she would have taken $70 out.

7 \times 10 = 70

  • Next we look at the net problem it is asking us how much is left we already know from the equation above that we need to subtract 70 from 120
  • 70 - 120 = 50
  • We now have both answers A. being that she would have taken $70 in total out of her account and B. being that she would have $50 left in her account.
3 0
3 years ago
Find the measure of TRS
nignag [31]

Answer:  The sum of the measures of the angle inside of a triangle add up to 180 degrees. That's all we're doing over here. And so let's see if we can simplify this a little bit. So these two guys-- 90 plus 90's going to be 180, so you get 180 minus theta …

Author: Sal Khan

Step-by-step explanation:

4 0
4 years ago
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