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3 years ago

Which expression is NOT equivalent to the other three?

2 answers:

5 0

<span>A) 2x − 2.5 + 3x − 3
2x - 5.5 + 3x
5x - 5.5

B) 5(x − 1.1)
5x - 5.5

C) 5(x − 5.5)
5x - 27.5

D) 5x − 5.5

The answer is C

If you're confused how I got my answers, let me know.

</span>

pychu [463]3 years ago

3 0

Answer:

I believe its C

Step-by-step explanation:

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A positive integer is 17 more than 26 times another. Their product is 2259. Find the two integers

gladu [14]

$a * b = 2259$
$a = 17 + 26*b$

Solve using substitution in a system of equations.

6 0

3 years ago

What is the range of ƒ(x) = c?

nikdorinn [45]

All real numbers because it’s a function that has no limit

3 0

3 years ago

Pls help me im confused

Artemon [7]

Answer:

c=36p+36

Step-by-step explanation:

Okay so the cost of the meal without tip is $36. To find the tip, we would multiply p by 36. To find our total (c), we would add this (36p) to the original 36.

In other words:

c=36p+36

(can also be written as c=36(1+p) )

8 0

2 years ago

Nielsen ratings are based on televisions in 50005000 households. Nielsen estimates that 12 comma 00012,000 people live in these

avanturin [10]

Answer:

We are 95% confident that the true proportion of TV audience is between 65.15% and 65.85%

Step-by-step explanation:

-From the given information, $\hat p=0.65$ .

-We calculate the confidence interval using this value at 95% confidence level:

$CI=\hat p\pm z \sqrt{\frac{\hat p(1-\hat p)}{n}}\\\\\\=0.65\pm 1.96\times \sqrt{\frac{0.65\times 0.35}{12000}}\\\\\\=0.65\pm 0.0085\\\\\\=[0.6415,0.6585]$

So, the 95% confidence interval is (0.6515,0.6585).

Hence, we are 95% confident that the true proportion of TV audience is between 65.15% and 65.85%.

6 0

3 years ago

In triangle ABC, the measure of ∠B is 90°, BC=16, and AC=20. Triangle DEF is similar to triangle ABC, where vertices D, E, and F

nevsk [136]

The third side of triangle ABC is AB. Using the Pythagorean Theorem, its length is 12.
12² + 16² = 20²

∠F is congruent to ∠C and so the sin(∠F) = sin(∠C)

The sin(∠C) = opposite/hypotenuse
= |AB| / |AC|
= 12/20
= 3/5
= 0.6

Answer:
Yes, it is 0.6

6 0

3 years ago