Explain why you would make one of the addends a tens number when solving an addition problem

Mathematics

1 answer:

Lyrx [107]3 years ago

3 0

It is showing you how to be

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What is the answer to this question

photoshop1234 [79]

Answer:

3) 124

Step-by-step explanation:

a1 = 10

a2 = a1+6 = 10+6 = 16

a3 = a2+6 = a1+6+6 = a1 + 2×6 = 22

a4 = a3+6 = a2+6+6 = a1+6+6+6 = a1 + 3×6 = 28

...

an = an-1 + 6 = a1 + 6(n-1)

a20 = a1 + 6(20-1) = 10 + 6×19 = 10+114 = 124

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3 years ago

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ASHA 777 [7]

1. 259
2. 80
3. 5316
4. 5
5. 2524

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3 years ago

Read 2 more answers

Gregorio took two tests. Find his z-score for each test. (Remember: The number of standard deviations between a score and the me

never [62]

I found the missing parts of this question.
Test A
Gregorio’s score 62 
Mean score 80 
Standard deviation 6 

Test B 
Gregorio's score 70 
Mean score 90 
Standard deviation 10 

a. Test A: 3; Test B: 2; Test A 
c. Test A: –2; Test B: –3; Test A 
b. Test A: –3; Test B: –2; Test B 
d. Test A: –3; Test B: –2; Test A


Refer to the attachment for the formula of z score:

test A: z = (62-80)/6 = -18/6 = -3
test B: z = (70-90)/10 = -20/10 = -2

B. Test A: –3; Test B: –2; Test B