How do I figure out these questions?Could you please teach me and give me examples? Examples with the answer and why it is would also be appreciated!

1) How tall are Sally and Anna if Sally is 0.1 m taller than Anna and their combined height is 3.16 metres?
Sally _ Anna _

2) Find these simple quantities
a. 1/5 of $50
b. 10% of $40

Thank you!

Answers

Answer 1

Answer: 1) Sally is 1.63 m tall and Anna is 1.53 m tall
2) 1/5 of $50 is $10 (just divide 50 by 5)
10% of $40 is $4 (multiply 40 by 0.1)

Answer 2

Answer: 1) you should let x be Anna's height and (x+0.1) will be sally's height
.
x + x + 0.1 =3.16
2x=3.16-0.1
2x=3.06
x=3.06/2
X=1.53
So anna's height is 1.53m and sally's is 1.53+0.1=1.63m.

This is how u do it hope it helped:)

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What is the expanded form of 876 million

Expand and evaluate the power. (1.6)^2

A.
3.6

B.
3.2

C.
2.56

D.
0.8

Answers

It would be 2.56

Hope this helped you!

1.6 x 1.6 = 2.56

Hope this helped!

A student skipped a step when she tried to convert 15 hours to seconds,and she got the following incorrect result ?15 hours(60 seconds),/1 minute=900seconds

Answers

Answer:

60mins/1 hour

Step-by-step explanation:

Final answer:

The student made an error by skipping the necessary step of converting hours to minutes before converting to minutes to seconds. The correct conversion is: 15 hours is equal to 54000 seconds.

Explanation:

In mathematics, specifically in units conversion, the correct step to convert hours to seconds would be to first convert the hours to minutes, and then convert minutes to seconds. The mistake the student made was skipping the step of converting hours to minutes before converting to seconds. Let's correct the calculation:

First, convert hours to minutes: 15 hours * 60 minutes = 900 minutes.
Next, convert minutes to seconds: 900 minutes * 60 seconds = 54000 seconds.

So, 15 hours is equal to 54000 seconds, not 900 seconds.

Learn more about Converting Hours to Seconds here:

brainly.com/question/35715548

#SPJ2

What number makes the percent equation true blank = 15% of 80

Answers

Answer:

Step-by-step explanation:

15/100 × 80=12%

Bubba ordered pizza. So far he has eaten 3/8 of the large pizza. His uncle has eaten 1/8 of the pizza. How much of the pizza has been eaten so far

Answers

so: 3/8 + 1/8 = 4/8

and we know that 4/8 can be reduced to 1/2.

So, half of the pizza has been eaten so far.

To find out how much they both ate in all, you add the fractions of how much they ate. So that would be 3/8+1/8. And you add the numerators because the denominators are the same so that would be 4/8 or 1/2 of the pizza. Hope this helps.

Please order from Least to Greatest. All 3 plz

Answers

Answer:

1. 1.19, 1.24, 1.3, 1.37, 1.42, 1.52, 1.54, 1.59, 1.59, 1.74

2. 0.65, 0.63, 0.62, 0.6, 0.56, 0.52, 0.5, 0.49, 0.45

3. 1.09, 1.46, 1.78, 2.51, 2.59, 3.52, 3.54, 3.72, 3.77

Step-by-step explanation:

First one, Least to greatest

1.19, 1.24, 1.3, 1.37, 1.42, 1.52, 1.54, 1.59, 1.59, 1.74

Second one, greatest to least

0.65, 0.63, 0.62, 0.6, 0.56, 0.52, 0.5, 0.49, 0.46, 0.45

Third one, least to greatest

1.09, 1.46, 1.78, 2.51, 2.59, 3.1, 3.52, 3.54, 3.72, 3.77

Hope this helped! :D

What fraction is equal 2 1/2

Answers

2 1/2

to change to an improper fraction

(2*2+1) /2

5/2

Answer: 5/2

The correct answer would be 5/2.

As this is the mixed fraction equivalent.

Hope this helps! c:

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