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nordsb [41]
3 years ago
12

Adam had $27 to spend on 3 beakers for his science class. After buying them, Adam had $6 left. How much did each of the beakers

cost?
Mathematics
2 answers:
Irina-Kira [14]3 years ago
7 0

Answer: $7

Step-by-step explanation: So $27 -$6= $21.Then you Divide by 3 and you will get $7 for each beaker.

Alekssandra [29.7K]3 years ago
4 0

Answer:

$7

Step-by-step explanation:

In order to find the total cost of the 3 beakers, take away $6 from the total amount Adam has.

$27 - $6 = $21

$21 is the amount needed for 3 beakers, hence to find 1 beaker, you just have to divide $21 by 3.

$21 ÷ 3 = $7

Therefore, each beaker costs $7.

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What is the minimum value of the objective function C = 4x + 9y?
Elodia [21]

Answer:-24

explain how you know:

Since xy = 4, we have y=4/x. Substituting in (1) we get f(x) = 4x+(36/x) …….(2)

Differentiating we get f ' (x) = 4 - (36/x^2)…..(2)

For maxima or minima, f ‘ (x) = 0

=> 4 - (36/x^2) =0 => (4x^2 - 36)/x^2 = 0 which gives x= +/- 3

Differentiating (2), f ‘’ (x) = 72/x^3

When x= +3 , f ‘’ (x) is clearly +ve. Therefore f(x) at (2) gives minima and the minimum value is 24.

When x= -3, f ‘’ (x) is -ve. Therefore, f(x) has maxima at x= -3. The maximum value is -24.

Note: You may be surprised to observe that the minima is more than the maxima. This is due to the fact that the function is discontinuous at x= 0, the graph of f(x) comprising of two branches, one in the first quadrant giving the minima (= +24) and another in the third quadrant that gives maxima (= -24)

8 0
3 years ago
Read 2 more answers
What is the median of the following set of data?
Alona [7]

Answer:

5 is the median ..........

4 0
3 years ago
Colin put some buttons on a table. There were 4 blue buttons, 5 red buttons, 7 tan buttons, and 8 white buttons. Colin's cat jum
mixas84 [53]
4 out of 24 reduced to 1 out of 6 since there are 24 total buttons and 4 are blue. About 16.67%
7 0
3 years ago
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PLEASE ANSWER THIS QUESTION! I BEG OF YOU
Law Incorporation [45]

The difference between the rate of change of B and the rate of change of A is 15.

<h3>How to get the difference in the rates of change?</h3>

First, we need to get the two rates of change.

We have two linear functions.

A: y = 35*x

For function A the rate of change is the slope, wich is 35.

Function B is graphed.

Remember that if a line passes through two points (x₁, y₁) and (x₂,y₂) then the slope is:

a = \frac{y_2 - y_1}{x_2 - x_1}

In the graph, we can see that line B passes through (0, 0) and (1, 50), then the slope is:

a = \frac{50 - 0}{1 - 0} = 50

Then the rate of change of B is 50.

The difference between the rates of change is:

diff = 50 - 35 = 15

If you want to learn more about rates of change:

brainly.com/question/8728504

#SPJ1

5 0
2 years ago
To most closely estimate the difference below, would you round the numbers to the nearest ten thousand, the nearest thousand, or
zhannawk [14.2K]

Answer:

To most closely estimate the difference, I would round 62,980 to the nearest thousand, so it will be 63,000. That is because when rounding, 63,000 is large enough so that adding will be easy, and 62,980 is relatively close to 63,000.

I would round 49,625 to the nearest thousand, since it would make the subtraction easier and 49,625 is only 375 units away from 50,000.

63,000 - 50,000 = about 13,000.

Hope this helps!

6 0
3 years ago
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