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hichkok12 [17]
2 years ago
13

If 50% of a number is 150 and 30% of the same number is 90, find 80% of that number.

Mathematics
2 answers:
olya-2409 [2.1K]2 years ago
8 0

Answer:

A. 240

B. 225

Step-by-step explanation:

50% of ? = 150

80% of ? = 150 x (80%/50%)
80/50 = 1.6

%/% = 1

1.6 x 1 = 1.6

80% of 300 = 150 x 1.6

150 x 1.6 = 240

80% of 300 = 240.

25% of 900 = ?

900 x 25 = 22500

22500/100 = 225

900 x 25% = 225

225 people bring their lunch to school on Thursday.

Natali [406]2 years ago
5 0

Answer:

5/100x900=180

Step-by-step explanation:

answer 180

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Please help me on this thank you so much
ruslelena [56]
I believe the answer is B because you multiply 18 and 40 then subtract 320 from that and you will 400.
5 0
3 years ago
Please help!!! It would be much appreciated
BigorU [14]

Answer:

Hours of television because it is the explanatory variable.

Step-by-step explanation:

For me, I am assuming the more time spent watching television would cause lower reading scores. I imagine this would be a bar graph, the vertical y-axis would be labeled the reading scores and the horizontal x-axis would be the amount of hours spent watching television. This is because when you graph, you move right then up to get to the unit, meaning the hours of television affect the reading scores. hope this helpss

6 0
2 years ago
6th grade work please tell me the answer fast and don’t give me and incorrect one
anyanavicka [17]

Answer: 222cm

Step-by-step explanation:

To find the area of this composite shape you will have to split them into 2 shapes; a rectangle and a triangle.

To work out the area of the rectangle you have to do 15×12= 180

Then, to work out the area of the triangle, you use the formula base times height divided by 2.

7×12=84

84÷2=42

Then to work out the total area of both the rectangle and the triangle, you have to add the area of both.

180+42=222cm

Hope this helps :)

3 0
3 years ago
What is x in this equation 2-3/4x=11
vladimir2022 [97]

Answer:

x=-12

Step-by-step explanation:

2-3/4x=11

3/4x=2-11

3/4x=-9

x=-9/(3/4)

x=(-9/1)(4/3)

x=-36/3

x=-12

3 0
3 years ago
How to find the point that is equidistant from (5,-5) and (1,1)
torisob [31]
<h3>Answer: (3, -2)</h3>

Explanation:

Your teacher wants you to find the midpoint. This is the point that is in the middle of the two given points. Let's call this M. So the distance from M to (5,-5) will be the same as the distance from M to (1,1)

The x coordinates of (5,-5) and (1,1) are 5 and 1 respectively.

Add them up: 5+1 = 6

Divide by two: 6/2 = 3

The x coordinate of the midpoint is x = 3

Repeat for the y values -5 and 1

Add: -5+1 = -4

Divide in half: -4/2 = -2

The y coordinate of the midpoint is y = -2

So the midpoint is M = (x,y) = (3,-2)

If you were to use the distance formula, you would find that

distance from (5,-5) to (3,-2) = distance from (3,-2) to (1,1)

This is what it means to be "equidistant" (aka "equally distant")

7 0
3 years ago
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