3 years ago

Determine which quadratic equations have 1 real solution. Select two that apply.

Mathematics

1 answer:

vichka [17]3 years ago

3 0

Answer:

second and fourth has real solution.

Step-by-step explanation:

hope this helps.

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Consider H0: μ = 45 versus H1: μ < 45. A random sample of 25 observations produced a sample mean of 41.8. Using α = .025 and

a_sh-v [17]

Given
$H0: \ \mu=45 \\ \\ H1: \ \mu\ \textless \ 45$
This is a one-tailed test.

$z= \frac{41.8-45}{6/ \sqrt{25} } = \frac{-3.2}{6/5} = \frac{-3.2}{1.2} =-2.6667$

$P(z\ \textless \ -2.6667)=0.00383$

Since the p-value of the sample statistic (0.00383) is less that the significant level (0.025), we reject the null hypothesis.

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mario62 [17]

C that is the right answer

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Explain 2 methods other than looking for intersections on the graph itself that will locate all intersections

GaryK [48]

Finding the zeros using factoring and also the discriminat

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You have $15 to spend in a candy store. If Kitkat cost $0.75 each and mini Snickers are $0.25 each.

zhuklara [117]

Answer:

1. 60 snickers

2. 20 KitKats

i cannot anwser 3 cause its not showing up somehow. Sorry.

Step-by-step explanation:

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3 years ago

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A cylinder-shaped drainage pipe 66 in. long measures 25.12 in. around.

Darina [25.2K]

V=hpir^2

tricky, they didn't give us radius
they just gave circiufmerece

c=2pir
25.12=2pir
divide by 2 both sides
12.56=pir
divide by 3.14 both sides
4=r

subsitutet

v=hpir^2
v=66pi4^2
v=66pi16
v=1056pi
v=3315.84 cubic inches

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3 years ago