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Serhud [2]
2 years ago
5

Need helpppp :) questions in the picture !

Mathematics
1 answer:
Softa [21]2 years ago
8 0
Final answer is D !!

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M is directly proportional to r2 <br> When r=2, m=14<br> Work out the value of m when r=12
Genrish500 [490]

we have M is durectly porpotional to r^2

so M=(k)r^2

and when r=2, m=14

so 14=(k)(2)^2

k=14/4 =7/2

so when r=12

m= (7/2)(12)^2 =(7/2)(144) = 504

8 0
3 years ago
19) It will cost $12.50 per person to make dinner. Write an
-BARSIC- [3]

Answer:

12.50x less than or equal to $200

Step-by-step explanation:

7 0
3 years ago
In 3 stores the same detergent is on special. Which store offers the Best Buy? explain
nikklg [1K]
$12.48/6= $2.08 
$14.42/7= $2.06 
$10.35/5= $2.07 
So you are looking for the best deal. 
The best deal would be: 
B.) 7 bottles for $10.35 
Hope that helps!! 
Have a wonderful day!! 
7 0
3 years ago
On a map, the scale shown is 1 inch : 3 miles. If an island is 0.5 square inches on the map, what is the actual area of the isla
gtnhenbr [62]

Answer:

4.5

Step-by-step explanation:

First we need to turn the ratio of 1 : 3 into a fraction

1:3 = 1/3

Next we need to square that fraction

1 x 1 = 1

3 x 3 = 9

Then we turn those numbers into a fraction

1/9

We turn the .5 into a fraction

.5/x

And cross multiply both fraction by each other

1/9 x .5/x

1 x X = X

9 x .5 = 4.5

So

4.5 = X

4 0
3 years ago
Sanjay read 56 pages of his book this weekend.This is 35% of the pages in the book.How many pages are in Sanjays book?
Maurinko [17]
1. 56 : 35 = 1.6
2. 1.6* 100 = 160
3. The answer is 160
3 0
3 years ago
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