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BlackZzzverrR [31]
3 years ago
15

This is a sketch of the curve with equation y = f(x).

Mathematics
1 answer:
Katen [24]3 years ago
6 0

Answer:

We have to use the formule to calculate the vertex which is: V(-b/2a;4ac-b^2/4a)

A) y=x+7 where a=1 b=0 and c=7

By replacing we have: V(0;28/4) V(0;7)

B) y=-x where a=-1 b and c=0 so V(0,0)

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It takes 3/5 feet of ribbon to make a pin. You have 9 feet of ribbon. How many pins can you make?
Troyanec [42]
You can divide 9 by \frac{3}{5} to find the amount of pins, (let's call this number x), you can make with 9 $ ft$ of ribbon.

x=9 \div \frac{3}{5} \\ \\  x= \frac{9}{1} \div \frac{3}{5} \\ \\ x= \frac{9}{1} \times \frac{5}{3} \\ \\ x= \frac{9 \times 5}{1 \times 3} \\ \\ x= \frac{45}{3} \\ \\ x=15

So, 15 pins can be made.


5 0
3 years ago
Samantha reports that 60% of the first year students at her university think they should be able to bring a car to campus. She a
Nostrana [21]

Answer:

D) the standard error for her sample is 15

Step-by-step explanation:

Samantha is 95% certain that between 50% and 70% of the first year students agree that they should be able to bring a car to campus.

Here

  • 95% is the confidence level.
  • The range between 50% and 70% indicates 95% confidence interval.
  • 60% is the average proportion of the first year students at her university think they should be able to bring a car to campus.
  • 10% (0.1) is the margin of error from the mean

Since standard error can be obtained by dividing margin of error by the z-statistic of the confidence level which is 1.96. The standard error for her sample \frac{0.1}{1.96} does not equal to 15.

4 0
3 years ago
Write an equation for the following line.<br> 10<br> -10<br> 10<br> -101
mestny [16]
Y= 4

How to:
Using the y axis it hits the line at 4
8 0
3 years ago
Mildred has three little girls, Margo, Delilah, and Gertrude. If she randomly chooses one of them to clean the kitchen after din
seropon [69]
1/3 let me know if I’m right
5 0
3 years ago
Pls help me will make you brainliest k no file too
wolverine [178]

Answer:

286 cubes

Step-by-step explanation:

Find the area by multiplying the fractions. You get 71 1/2. Divide the area by 1/4 that determines your answer.

8 0
2 years ago
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