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3 years ago

Write in standard form

Mathematics

1 answer:

Alika [10]3 years ago

5 0

Answer:

The equation was y= -3/4x + 19/4 in slope-intercept form, but it is x + 4/3y= 19/3

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Simplify: 2⁴ x 10³ (-5)³ x (-2)

Crazy boy [7]

Answer:

hope this helps

Step-by-step explanation:

7 0

3 years ago

A cylinder has radius 1.6 meters and a height of 12 meters. Find its volume and round to the nearest tenth of a meter.

andrew-mc [135]

Answer:

96.5 m³

Step-by-step explanation:

Cylinder volume formula:

V = πr²h

Substitute values:

V = π(1.6)²(12) m³ = 96.5 m³ (rounded to the nearest tenth of a m³)

8 0

3 years ago

Rewrite (3a^3)^2 without exponents

Tatiana [17]

Answer:

(3a³)²=9a^6

3×3×a×a×a×a×a×a = 9a^6

that is your answer. plz Mark me brainliest

8 0

4 years ago

On a standard IQ test, the standard deviation is 15. How many random IQ scores must be obtained if we want to find the true popu

igor_vitrenko [27]

Answer:

We need at least 4238 scores.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.97}{2} = 0.015$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.015 = 0.985$ , so $z = 2.17$

Now, find the margin of error M

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How many random IQ scores must be obtained if we want to find the true population mean (with an allowable error of 0.5) and we want 97 percent confidence in the results

We need at least n scores, in which N is found when $M = 0.5$ . So

$M = z*\frac{\sigma}{\sqrt{n}}$

$0.5 = 2.17*\frac{15}{\sqrt{n}}$

$0.5\sqrt{n} = 2.17*15$

$0.5\sqrt{n} = 32.55$

$\sqrt{n} = \frac{32.55}{0.5}$

$\sqrt{n} = 65.1$

$\sqrt{n}^{2} = (65.1)^{2}$

$n = 4238$

We need at least 4238 scores.

7 0

4 years ago

Plz help 25 pts and ill mark u brainliest

nika2105 [10]

Answer:

if your doing scientific notation then 2.7x10^3 would be the only one correct. if its not scientific notation then 27x10^3 would be more because it would be equivilent to 2700<27000

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers