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3 years ago

Identify which of the following questions

Mathematics

1 answer:

slava [35]3 years ago

5 0

Answer:

a and e I believe

Step-by-step explanation:

this is because to answer those questions you need to survey multiple different people, you'd need more than just an answer if you were to find the average of something. For the other questions they're very direct and only have one answer. Therefore you wouldnt need a statistical process for the other questions and only for a and e.

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PLZ help me fast 2 mins left

jek_recluse [69]

Answer:

$\sqrt{-5}=i\sqrt{5}$

$\sqrt{-25}=5i$

Step-by-step explanation:

i is an imaginary unit, this means

$i^2=-1$

Rewrite -5 as $5\cdot (-1)=5\cdot i^2,$

then

$\sqrt{-5}=\sqrt{5i^2}=\sqrt{5}\cdot \sqrt{i^2}=\sqrt{5}\cdot i=i\sqrt{5}$

Rewrite -25 as $-25=25\cdot (-1)=25\cdot i^2,$

then

$\sqrt{-25}=\sqrt{25\cdot i^2}=\sqrt{25}\cdot \sqrt{i^2}=5\cdot i=5i$

6 0

3 years ago

21x-5=7+17x Write it down step by step please

Nat2105 [25]

Answer: x=3

Step-by-step explanation: Step 1: Simplify both sides of the equation.

21x−5=7+17x

21x+−5=7+17x

21x−5=17x+7

Step 2: Subtract 17x from both sides.

21x−5−17x=17x+7−17x

4x−5=7

Step 3: Add 5 to both sides.

4x−5+5=7+5

4x=12

Step 4: Divide both sides by 4.

$\frac{4x}{4}$ = $\frac{12}{4}$

So Final Answer: x=3

If I Helped, Please Mark Me As Brainliest, Have A Great Day :D

4 0

3 years ago

Read 2 more answers

Triangle A is reflected in the x axis to give triangle B, which is then reflected in the line y=x to give Triangle C. Draw Trian

OLEGan [10]

Step-by-step explanation:

always draw triangle b first. for triangle b it is reflected across the x-axis which means all y valies become negative. then for triangle c, you swap the x and y values around.

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2 years ago

How many strings of eight uppercase English letters are there that start with X, if no letter can be repeated?

spin [16.1K]

X 25*24*23*22*21*20*19
which gives you
2,422,728,000

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3 years ago

The height of a distance marker is 8213 feet. 45 of the pole is painted white and rest is painted blue. what fraction of the pol

Nitella [24]

$\frac{45}{8213}$ of the pole is white

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3 years ago