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notsponge [240]

3 years ago

15

I need help, please and thank you!

2 answers:

Phoenix [80]3 years ago

6 0

The answer is c, when he combined 0.96 and 0.75 they are not like terms. The 0.75 has a y attached to it

victus00 [196]3 years ago

6 0

Answer:

The answer is C.

Step-by-step explanation:

Everything that Dominic was doing was correct up until step number 4. He added 1.5 and 0.75y. He shouldn't have done that because those numbers do not have like terms. He should have combined 1.5 and -0.96 which would give him 0.54. Leaving us with the actual answer being 0.54 + 0.75y.

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A company that makes cola drinks states that the mean caffeine content per 12-ounce bottle of cola is 40 milligrams. You want t

ziro4ka [17]

Answer:

Step-by-step explanation:

Put hypotheses as:

$H_0: mu =40 mg\\H_a: mu \neq 40 mg.$

(Two tailed test at 4%)

Since population std deviation is given we can do Z test.

$Sample size n =30\\Sample mean = 42.3 mg\\Mean diff = 2.3 mg\\Std error of sample = \frac{7.1}{\sqrt{30} } =1.296$

Test statistic t = mean diff/se = $\frac{2.3}{1.296} =1.775$

p value=0.075

Since p >0.04 our alpha, we accept null hypothesis.

At alphaequals0.04, we cannot reject the company's claim

8 0

3 years ago

Please simplify, 50 points.<br><br> (sin Θ - cos Θ) - (sin Θ + cos Θ)^2

Amanda [17]

Answer:

Using x for Θ:

(sinx - cosx)^2 - (sinx + cosx)^2

= (sin^2 x - 2sinxcosx + cos^2 x) - (sin^2 x + 2sinxcosx + cos^2 x)

= - 2 sinx cosx - 2 sinx cosx

= - 4 sinx cosx

= - 2sin(2x)

Step-by-step explanation:

8 0

3 years ago

In 2014, the estimated population of the world was 7,261,087,766 people.When this number is written in expanded form using expon

WARRIOR [948]

we are given

In 2014, the estimated population of the world was 7,261,087,766 people

we know that

7,261,087,766 lies between 7,300,000,000 and 7,200,000,000

but it is more closer to 7,300,000,000

so, we will consider this for scientific form

$7,300,000,000=73*10^{8}$

we can also write as

$7,300,000,000=7.3*10*10^{8}$

$7,300,000,000=7.3*10^{9}$

scientific form is

$=7.3*10^{9}$ ..............Answer

6 0

3 years ago

Read 2 more answers

Supposed you are adding 43 and 28. will you regroup explain

NikAS [45]

You will regroup :) I hope that helped, btw the explanation is in the picture

3 0

3 years ago

HELP ME!!! solve for x

liq [111]

Answer:

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Step-by-step explanation:

Segment drawn to join the two sides of the triangle is parallel to third side of the triangle.

Therefore, by basic proportionality theorem:

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3 0

3 years ago