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il63 [147K]
3 years ago
12

a survey mr thrones class shows that 5 out of 8 students will by lunch how many out of 720 students in the school will buy lunch

.
Mathematics
1 answer:
never [62]3 years ago
8 0

5/8 that's how ratio of students that will buy lunch. so in order to find number students who will buy the lunch out of 720, just multiply 720 with 5/8 ie, 720x5/8 ie 450.

450 is answer

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3. Three years ago, Jane was three times as old as Alice. In two years time, the sum of their ages will be 62. Determine their p
anzhelika [568]
3 yrs ago:

Alice - x 
Jane - 3x 

Fast forward 2 years... 1 year ago: 

Sum of their ages = 62


Equation to solve: x + 3x = 62 
                                4x = 62 
                               -----  -----
                                 4      4
 
                                 x = 15.5 

From this, we can deterime that Alice is 15 1/2 years old. 

Then, plug in 15.5 for x in 3x to find Jane's age. 

15.5 × 3 = 46.5

From this, we can determine that Jane is 46 1/2 years old. 


I hope this helps you to understand this problem better.


5 0
4 years ago
Read 2 more answers
MATH HELP PLZZ!! MARKING BRAINLIEST!!!
dimaraw [331]

Answer:

1 1/2 y

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The circumference of a circle is 19.8mm. Find the length of the radius. Give your answer rounded to 1 DP.
Effectus [21]
Circumference of a circle = 2pie*r
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r = 3.13
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Comment below
3 0
3 years ago
Given that (6,-8) is on graph f(x), find the corresponding point for the function f(-1/2x)
ValentinkaMS [17]
Set the argument -1/2x equal to the x coordinate of the given point 6. Solve for x

-1/2x = 6
x = 6(-2)
x = -12

So x = -12 makes the equation -1/2x = 6 true. 

If we plug x = -12 into f(-1/2x) we get f(6)

Since we know that (6,-8) is on the graph of f(x), we know that (-12,-8) is on the graph of f(-1/2x)

What happens is that there's a reflection over the y axis (due to the minus sign in -1/2x) and there's a horizontal stretch by a factor of 2. So the graph of f(-1/2x) appears to be wider than f(x).

In summary, the final answer is (-12,-8)
8 0
3 years ago
In 1-2 paragraphs, respond to the following prompt:
Travka [436]

Answer:

It allows you to name a guardian for your children. The living trust protects the property from minor children, and instead of leaving property directly to the child, it can be left under the care of a responsible trustee who will manage the assets until the child becomes 18.

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3 years ago
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