3 years ago

What does the graph of -3x-5y≥20 look like?

Mathematics

1 answer:

Hoochie [10]3 years ago

8 0

The answer is D I believe

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I<br> 8. Classify 8 as a perfect square, a perfect cube, both, or neither.

Murljashka [212]

Answer:

It's a perfect cube, but not a perfect square.

Step-by-step explanation:

2^3 = 8, meaning 8 is a perfect cube. But since 2^2 = 4 and 3^2 = 9, and 8 is in between, 8 is not a perfect square.

I hope this helped.

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3 years ago

How many 3/4-cup servings can you get from 7 1/2 of coffee?

svp [43]

Answer : You can get 10

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3 years ago

Find the values of a through e that make these two relations inverses of each other.

kotegsom [21]

Answer:

Use math papa the calculator and copy and paste your work into it or use inspect if your on computer

Step-by-step explanation:

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3 years ago

Gwyneth begins solving for x in the equation 2 (x minus 4) = 5 (4 minus 2 x) + 4 x. After applying the distributive property and

masya89 [10]

$2(x-4)=5(4-2x)+4x$

$2x-8=20-10x+4x$

$2x+10x-4x=20+8$

$8x=28\\x=\frac{28}{8}$

$x=\frac{28/4}{8/4}=\frac{7}{2} \\x=\frac{7}{2}$

7 0

3 years ago

Read 2 more answers

Ian is a phycologist interested in determining the proportion of algae samples from a local rivulet that belonged to a particula

pickupchik [31]

Answer: 16590

Step-by-step explanation:

The formula we use to find the sample size is given by :-

, where p = prior estimate of population proportion.

$z^*$ = Critical z-value (Two- tailed)

E= Margin of error .

Let p be the population proportion of cyanobacteria.

Given : E = 0.01

Critical value for 99% confidence interval : $z^*=2.576$

If Ian does not want to rely on previous knowledge , then we assume p=0.5 because the largest standard error is at p=0.5.

Now, the required sample size = $n=0.5(1-0.5)(\frac{2.576}{0.01})^2$

$n=0.25(257.6)^2=0.25(66357.76)=16589.44\approx16590$

Required sample size = 16590

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3 years ago