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mina [271]
3 years ago
7

A survey of Mrs. Ramirez's students showed that 30

Mathematics
1 answer:
Umnica [9.8K]3 years ago
3 0

Answer: 480

Step-by-step explanation:

We can create a ratio for this!

We have:

\frac{number of hamburgers}{total students}= \frac{new number of hamburgers}{new number of students}

We can use substitution to input the information we already know:

\frac{12}{30} = \frac{x}{1200}

Using cross multiplication, we get:

1 200(12) = 30x

14,400 = 30x

\frac{14,400}{30}=\frac{30x}{30}

x = 480

Hope this helps! :)

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At a farmers' market Saturday, 5/8 of the vegetables sold were green. Of these, 3/4 were string beans. What fraction of the vege
Dennis_Churaev [7]

Answer: 15/32

Step-by-step explanation:

The data that we have is:

5/8 of the vegetable sold where green.

of theses 5/8, 3/4 were string beans.

Then the 3/4 is applied to the 5/8 of green vegetables.

Then the fraction (of the total number of vegetables) that were string beans was:

F  = (3/4)*(5/8) = (3*5)/(4*8) = 15/32

3 0
3 years ago
Consider the parabola y = 8x − x2. (a) find the slope of the tangent line to the parabola at the point (1, 7). 6 (b) find an equ
Brut [27]
In order to find any of the info we need we have to find the first derivative of the equation.  If y=-x^2+8x,  then  y'=-2x+8.  We are told to find the slope at point (1, 7).  Using that x value in our derivative will give us the slope of the line at that point.  y' = -(1)^2+8.  So y' = 7.  That's the slope of the line.  Now we will use that slope along with the x and y coordinate in the slope-intercept form of a line to solve for b.  7 = 7(1) + b so b = 0.  Our equation then is y = 7x.  If you graph these in the same window on your calculator, you can see how perfectly that align at the given point.  It's really quite perfect.
5 0
3 years ago
Read 2 more answers
What is (t)? 0=18000*0.988^t
lutik1710 [3]
0=1. The answer is No Solution.
6 0
3 years ago
PLEASE HELP IT'S DUE TODAY-
Marina86 [1]

bro.. i don't think someone is gonna answer all this for you, you should like figure this out on ur own..

8 0
2 years ago
Read 2 more answers
K/75 + 57.1 = 40.8<br> k = ?
Ronch [10]
K/75 + 57.1 = 40.8

k/75 = 40.8 - 57.1

k/75 = -16.3

k = -16.3 • 75

k = -1222.5 or -1222 1/2

Hope it helps!
5 0
3 years ago
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