2 years ago

Which sign makes this number sentence true?

Mathematics

1 answer:

Anestetic [448]2 years ago

5 0

Answer:

Should be C

Step-by-step explanation:

Plz mark as brainlist

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The value of y varies directly with x. When y=80, x=1/2. What is the value of y when x is 2 1/4?

spin [16.1K]

Using the formula y = kx
80 = .5k
k = 160
y = 160*2.25
y = 360

4 0

3 years ago

The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club. She would now like to det

Maru [420]

Answer:

0.077994

Step-by-step explanation:

Given that the owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club.

$H_0: Mean = 30\\H_a: Mean >30$

(Right tailed test)

Sample size = $n=250$

Sample mean = 30.45

Mean difference = $30.45-30=0.45\\$

Sample std dev s = 5

Sample std error = $\frac{5}{\sqrt{n} } =\frac{5}{\sqrt{250} } \\=0.3163$

Test statistic = Mean diff/std error = $=\frac{0.45}{0.3163} =1.423$

Since population std deviation is not know we use t test

p value = $0.077994$

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2 years ago

A college graduate expect to earn a salary of 50000 during the first year after graduation and receive a 3% raise every year aft

11111nata11111 [884]

65,000 give me a thanks or brainiest answer if this helps!

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2 years ago

What is the surface area of the prism

V125BC [204]

Answer:

14 squared

Step-by-step explanation:

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2 years ago

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HELP PLS BRAINLIEST IF POSSIBBLE factor each polynomial completely a^2-ab-8a+8a brainly

sineoko [7]

Answer:

a(a - b)

Step-by-step explanation:

given polynomial: a²- ab - 8a + 8a

We can first simplify this answer by removing like terms,

- 8a + 8a = 0

so we have a²- ab in. the simplest form

we can take this one step further and factor out the a (not simplest form)

a time a = a²

a times b = ab

hence, a(a - b)

Learn more about Factoring here: brainly.com/question/18032923

7 0

1 year ago