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3 years ago

I neeeed help asaspp thank you

Mathematics

1 answer:

stiks02 [169]3 years ago

5 0

Answer:

<h2>The answer is (2,-4)</h2>

Step-by-step explanation:

<h2><u><em>PLS MARK AS BRAINLIEST!!!</em></u></h2>

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I néed to know wich of thé staments are true

cestrela7 [59]

Rectangle A has a larger area

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3 years ago

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A Rectangular Room has a length of 3 more than its width. The perimeter of the room is 90. What is the width of the room?

nignag [31]

The answer to your question is 21

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3 years ago

PLZZ HELP! WILL MARK BRAINLIEST!!

joja [24]

Answer:

Step-by-step explanation:

Neptune is about 2,700,000,000 miles from Earth.

Mercury is about 135,000,000 miles from Earth.

A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. The power is the number of decimal places you move.

1) 2,700,000,000 = 2.7 x $10^{9}$

135,000,000 = 1.35 x $10^{8}$

$\frac{Neptune}{Mercury} = \frac{2.7*10^{9} }{1.35*10^{8}}$

You can see there is only one extra 0 on top, the rest will cancel so you have:

$\frac{27}{1.35} = 20$

It's 20x farther to Neptune from Earth, than it is to Mercury from Earth.

7 0

3 years ago

A random sample of 23 items is drawn from a population whose standard deviation is unknown. The sample mean isx⎯ ⎯ x¯ = 840 and

gayaneshka [121]

Answer:

$(832.156, \ 847.844)$

Step-by-step explanation:

Given data :

Sample standard deviation, s = 15

Sample mean, $\overline x = 840$

n = 23

a). 98% confidence interval

$\overline x \pm t_{(n-1, \alpha /2)}. \frac{s}{\sqrt{n}}$

$$E= t_{( n-1, \alpha/2 )} \frac{s}{\sqrt n}}$

$t_{(n-1 , \alpha/2)} \frac{s}{\sqrt n}$

$t_{(n-1, a\pha/2)}=t_{(22,0.01)} = 2.508$

∴ $E = 2.508 \times \frac{15}{\sqrt{23}}$

$E = 7.844$

So, 98% CI is

$(\overline x - E, \overline x + E)$

$(840-7.844 , \ 840+7.844)$

$(832.156, \ 847.844)$

4 0

3 years ago

Rewrite the difference as a sum of the fractions using the lowest common denominator 2/3 from 5/6

Dimas [21]

2/3 - 5/6 = 1/6

LCM of 3 and 6 : 6
3,6
6

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3 years ago

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