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pochemuha
3 years ago
12

The graph of a quadratic function touches, but does not cross, the x-axis at x = 4. Which function represents this situation?

Mathematics
2 answers:
jek_recluse [69]3 years ago
5 0
When a zero of a function does not cross the x-axis but touches it, this means that the zero is a "double root". It has two of the same factor (x - 4)^2 and two of the same zeros, x = 4 and x = 4
f(x) = x^2 - 8x + 16 would be the function with a double root at 4
fiasKO [112]3 years ago
3 0

It's 4 than it's 0 for the next one!

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The lifespans of gorillas in a particular zoo are normally distributed. The average gorilla lives 20.8 years; the
Luda [366]
If the mean is 20.8, one standard deviation each way is adding and subtracting 3.1, so 17.7 and 23.9 (68% of values)

Two standard deviations adding and subtracting 3.1*2 = 6.2, or 14.6 and 27.

Three standard deviations is 11.5 and 30.1

So we have
11.5 - 14.6 - 17.7 - 20.8 - 23.9 - 27 - 30.1

Going left to 11.5 is 3 standard deviations out, so 99.7/2 = 49.85%

Going right to 27 is 2 standard deviations out, so 95/2 = 47.5%

Add those two % to get 97.32%

This is hard to do without a picture so I hope that helps!

3 0
3 years ago
A carpenter has a piece of wood that is 78 inches long. He wants to cut it so that one piece is five times as long as the other
Lyrx [107]

Answer:

13 and 65

Step-by-step explanation:

x + 5x = 78

(because u want a piece (x) and a piece that's five times longer than x- so 5x. and they should come from a 78 inch piece)

6x = 78

x = 78 / 6

x= 13

(to counter check:  13 * 5 = 65.  

                               65 + 13 = 78  )

7 0
3 years ago
Read 2 more answers
Write three equivalent ratios for the given ratio. Circle the simplest form of the ratio. 10/12 14/2 4/7
zheka24 [161]
The simplest form is 4/7
8/14
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8 0
3 years ago
Read 2 more answers
Total cost for a computer if pay 600 down and 35.00 a month for 12 months
Stella [2.4K]
First step you would have to do would be to times 35 by 12 to see how much you would have to pay for 12 months.

35 x 12 = 420

Then, as you said, you a down payment of 600 so then you'd add.

600 + 420 = 1,020.

So the total cost of the computer would be $1,020.



8 0
3 years ago
6.
GrogVix [38]

Answer:

B. y= (4)/(5)x + 2

Step-by-step explanation:

Use the slope-intercept form  

y = m x + b  to find the slope  m  and y-intercept  b .

Slope:  

5

3

y-intercept:  ( 0 , − 2 )

3 0
2 years ago
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