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aniked [119]
3 years ago
7

Which of the following equals cos 80° ? A. sin 100° B. sin 20° C. sin 10° D. sin 80°

Mathematics
1 answer:
zysi [14]3 years ago
8 0

Answer:

C

Step-by-step explanation:

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g A coffee-dispensing machine is supposed to deliver eight ounces of liquid into each paper cup, but a consumer believes that th
kap26 [50]

Answer: Reject the eight- ounces claim.

Step-by-step explanation:

For left tailed test , On a normal curve the rejection area lies on the left side of the critical value.

It means that if the observed z-value is less than the critical value then it will fall into the rejection region other wise not.

As per given ,

Objective : A coffee-dispensing machine is supposed to deliver eight ounces of liquid or less.

Then ,

H_0: \mu=8\\\\H_a: \mu , since alternative hypothesis is left-tailed thus the test is an left-tailed test.

the critical value for z for a one-tailed test with the tail in the left end is -1.645 and the obtained value is -1.87.

Clearly , -1.87 < -1.645

⇒ -1.87 falls under rejection region.

⇒  Decision : Reject null hypothesis.

i.e. we reject the eight- ounces claim.

6 0
3 years ago
What do you call a characteristic of a living thing that helps it survive?
WINSTONCH [101]

Answer:

An adaptation is a characteristic that helps a living thing survive and reproduce. True Natural selection is a change in the characteristics of living things over thing

6 0
2 years ago
If a common logarithm is written without a base, what base should be used in evaluating it?
Mice21 [21]
10 is the default base for a logarithm
log of 50 is equal to log base 10 of 50
3 0
3 years ago
HELP!! Given f(x)=5x squared and g(x) = x squared + 2x squared - 5x, what is F (x) * g(x)?
TEA [102]
X^2+2x^2-5x

((x^2)+2x^2)-5x

Pull the factors out

3x^2-5x=x(3x-5)

x(3x-5)

x(3x-5)*5x^2

5x(3x-5)*x^2


Final

5x^3*(3x-5)



8 0
3 years ago
Look at the picture so you know what the problem is.
My name is Ann [436]

Excuse me, is this I ready because you know you can get  reported right... just try your best, it's not a real grade! :)

& possibly delete this question because a bot can track and report this to your school. People at my school did that and got in 3 days detention...

7 0
3 years ago
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