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natulia [17]
3 years ago
9

Mary wanted to know the amount of time7th grade students spend on homework each week, so she surveyed 20 students at random. The

results are shown below. There are 164 students in the 7th grade. Predict how many 7th grade students spend 5 hours on homework in a week.
Mathematics
2 answers:
Korvikt [17]3 years ago
7 0

Step-by-step explanation:

damaskus [11]3 years ago
6 0

Answer: ?

Step-by-step explanation:

I can’t see or read the results of the survey, so I can’t answer this question. If I did, I could answer this with you! Do you have the results of it, or can you say it!

You might be interested in
Have no idea how to do this-- Could someone show me how please. ​
motikmotik

Answer:

well E is (-7,-7) F is (-2,-3) G is (-1,-6)

Step-by-step explanation:

7 0
2 years ago
3 out of every 5 students in Mrs. Wilson's class have brown eyes. There are 20 students in Mrs. Wilson's class. How many of the
Alex787 [66]

Answer:

12

Step-by-step explanation:

So there is 3:5 right, so 20 divided by 5 equals 4, there are four 5's in 20.  Then 4 multiplied by 3 equals 12. So there are 12 students that has BROWN EYES.

<em>Hope I Helped You :)</em>

7 0
2 years ago
3+2/3(3-x)&lt;-7 please help I am stuck
asambeis [7]
Solve the problem then state if it's true or false- this is an order of operation problem. 3+2/3(3-X) this is the problem. Now distribute, 3+ 2/3(3)- 2/3(x)= 3+2- 2/3x so the final expression would be 5-2/3x I don't know about the <-7 part but that's the solution to the first one
8 0
3 years ago
Please help with the questions in the image
iren2701 [21]

Step-by-step explanation:

This seems to be calculus 1.

<u>Question a</u>

We have -2x^3 + 5x^2 + 9

m = slope = derivative

Find the derivative / slope of -2x^3 + 5x^2 + 9

We do this by differentiating the polynomials. There are a few methods to do this but I am going to use the power rule, which we multiply the constant by the exponent on the variable and subtract one from the exponent.

\frac{d}{dx}(-2x^3 + 5x^2 + 9)

-6x^2 + 10x

m = -6x^2 + 10x when x = a

<em>Now that we have this information, we can answer question b</em>

<u>Question b</u>

<u>The tangent line for Point (1, 12)</u>

First find the slope by using our derivative.

m = -6x^2 + 10x

m = -6(1)^2 + 10(1)

m = -6 + 10x

m = 4

Now that we have our slope, use point slope form to find our tangent line

y - 12 = 4(x - 1)

y(x) = 4x + 8


<u>Now lets do the same for the Point (2, 13)</u>

Find the slope at the point.

m = -6x^2 + 10x

m = -6(2)^2 + 10(2)

m = -24 + 10

m = -4

Now find the tangent line using point slope form of a line.

y(x) - 13 = -4(x - 2)

y(x) = -4x + 21


Now graph the lines, which I have done and you can see by viewing the image I have attached.


6 0
3 years ago
Three tenths of what number is 156?
tatiyna

Answer:

520

Step-by-step explanation:

If this answer helped you then please consider marking this as brainliest and like this respone :)

7 0
2 years ago
Read 2 more answers
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