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Elis [28]
2 years ago
11

How to do pyramid math

Mathematics
1 answer:
FromTheMoon [43]2 years ago
8 0

Answer:

https://youtu.be/IPvdVCMb5r4

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1. Express 30 out of 40 and 40 out of 50 as a percentage. Which is<br> the better score?
Ymorist [56]

Answer:

30 out of 40: 75%

40 out of 50: 80%

40 out of 50 is the better score

5 0
2 years ago
Lindsey completed a 30 point assignment. she eared 21 points what percent did she earn?
lana66690 [7]

Answer:

Lindsey got 70% on this assignment.

Step-by-step explanation:

21 divided by 30 equals 0.7 which is 70% in percent form.

4 0
2 years ago
Read 2 more answers
Mr. Ramsey just finished bathing his kids, and now he is draining the tub. The tub contains 32 gallons of water and is draining
KIM [24]
The answer would be 11 gallons.

The tub starts with 32 gallons. Every minute it loses 3 gallons.

So after 1 minute it has lost 3 gallons. For example:
32-3= 29 Meaning that after 1 minute the tub has 29 gallons left.

Now you have to remember that the tub is draining for 7 minutes. So it is losing 3 gallons 7 times, because it loses 3 gallons each minute and there are 7 minutes.

We can use multiplication to find how many gallons the tub loses after 7 minutes. This sign “X” basically means “groups of”. We have 7 groups of 3, or
7 X 3

This is the same as saying we have 3, 7 times. Written like this:

3+3 +3 +3 +3 +3 +3 = 21

So after 7 minutes the tub has lost 21 gallons.

Now we take the original number of gallons and take away what was lost:

32-21=11

So there are 11 gallons left after 7 minutes.

Please let me know if you need any further explanation. Hope this helped.

7 0
2 years ago
PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
MAVERICK [17]

Answer:

Step-by-step explanation:

3rd one

3 0
3 years ago
What is the correct description for the system of linear equations?
Mkey [24]
The slope of the first equation is -2, you can see it right off.

the slope of the second equation is 2, notice both are in slope-intercept form.

both equations are the equations of a line, so is really just two lines.

because their slope differs, they're not parallel or equivalent, therefore, they lines do meet at some point, and one point only, and therefore, they have 1 solution only.

a system of equations with at least 1 solution,  is a consistent system.

a consistent system with exactly 1 solution only, is not just consistent, but also independent.
7 0
3 years ago
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