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kicyunya [14]
2 years ago
10

Use the descriminant to describe the roots of each equation. Then select the best description. 16x^2+8x+1=0

Mathematics
1 answer:
Pachacha [2.7K]2 years ago
8 0
Use the values of a, b, and c to find the discriminant:
0
I don't know if this is correct

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What is a/9 =-4 I really need help on this one
pashok25 [27]
The answer I believe is -36
5 0
3 years ago
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PLEASE HELP AND EXPLAIN!
Neko [114]

Answer:

12 years old.

Step-by-step explanation:

1) 2x+x=18

2) Now solve 2x+x=18

Add alike terms

3x=18

Now divide both sides by 3 (3x/3 and 18/3)

x=6

So Hannah is 6 years old. Her sister must be 12.

8 0
3 years ago
A certain brand of jelly beans are made so that each package contains about the same number of beans. The filling procedure is n
pantera1 [17]

Answer:

p=0.063

Step-by-step explanation:

Let X be number of the certain brand of jelly beans that are made so that each package contains about the same number of beans.

X is N(375, 8)

YOu are collecting a sample size of

n = 8

Findings from the sample

\bar x =370\\

H_0: \bar x =375\\H_a: \bar x

(Left tailed test at 5% level)

Since sample size is small though sigma is known we use Z test, since norm

Mean difference = -5

Std error = \frac{8}{\sqrt{8} } =2.828

Test statistic t = mean diference / std error = \frac{-5}{2.828} \\=-1.768

df = n-1 =5

p value = 0.063

7 0
3 years ago
Jennifer has 25 coins with a total value of $4.25. The coins are quarters and nickels. How many of each does she have?
kirill115 [55]

Answer:

15 quarters, 10 nickels

Step-by-step explanation:

q+n=25

0.25q+0.05n=4.25

multiply the first equation by -0.25 and add the second equation to it

-0.25q-0.25n=-6.25\\0.25q+0.05n=4.25
________________
                -0.2n=-2

n=\frac{-2}{-0.2} =10   has 10 nickels

q=25-n=25-10=15  has 15 quarters

10(.05) +15(0.25) = 0.5 + 3.75 = 4.25

Hope this helps

8 0
11 months ago
A bakery makes donuts at the rate of 225 per hour. How long will it take the bakery to fill an order of 500 donuts?
dem82 [27]
If I understood your question properly, it would take 2 hours for the company to fill an order of 500 donuts.

I hope you found this helpful! C:
5 0
3 years ago
Read 2 more answers
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