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3 years ago

Solve 3√18a^2 please show your work

Mathematics

1 answer:

dezoksy [38]3 years ago

8 0

Reduce the index of the artical and exponent with 2 and get 3x18a. Calculate the product and get 54a.

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a student either knows the answer or guesses. Let 3434 be the probability that he knows the answer and 1414 be the probability t

Arlecino [84]

Answer: $\dfrac{12}{13}$

Step-by-step explanation:

Let A = he known the answer then A' = he guess the answer.

B = he answered it correctly

As per given , we have

$P(A)=\dfrac{3}{4}\ \ ,\ \ P(A')=\dfrac{1}{4}$

$P(B|A)=1$

$P(B|A')=\dfrac{1}{4}$

By Bayes theorem , we have

$P(A|B)=\dfrac{P(B|A)P(A)}{P(B|A)P(A)+P(B|A')P(A')}\\\\ P(A|B)=\dfrac{1\times\dfrac{3}{4}}{1\times\dfrac{3}{4}+\dfrac{1}{4}\times\dfrac{1}{4}}\\\\= \dfrac{12}{13}$

The probability that the student knows the answer given that he answered it correctly is $\dfrac{12}{13}$ .

6 0

3 years ago

PLEASE HELP ME ANSWER THESE QUESTIONS!! (USE IMAGE AND DON'T ANSWER IF YOU'RE NOT GOING TO HELP!!)

Alika [10]

Answer:

5. no

6. all

7. all

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

A concrete pillar has the shape of a cylinder. It has a diameter of 8 meters and a height of 9 meters. If concrete costs $87 per

Komok [63]

Answer:

Cost, C = $28410.72

Step-by-step explanation:

We have, a concrete pillar has the shape of a cylinder.

Diameter of pillar is 8 m and ts height is 9 m

If concrete costs $87 per cubic meter, it is required to find the concrete cost for the pillar. For this lets find the area of cylindrical shape. So,

$A=2\pi rh+2\pi r^2\\\\A=2\times 3.14\times 4\times 9+2\times 3.14\times 4^2\\\\A=326.56\ m^2$

The cost of pillar at the rate of $87 per cubic meter will be :

$C=326.56\times 87\\\\C=\$28410.72$

8 0

3 years ago

I WILL GIVE BRAINLIEST!!!

dlinn [17]

Answer:

p=2x^3+3x

Step-by-step explanation:

no explanation math papa

7 0

2 years ago

What is the remainder when (4x3 + 2x2 − 18x + 38) ÷ (x + 3)?<br> 2<br> 12<br> 96<br> 110

Brilliant_brown [7]

°°°4°°°2°°°-18°°°°°°38
•|
-3|°°°-12°°°30°°°°°-36
------------------------------'
°°°4°° -10 12°°°°° °°2
remainder=2

6 0

3 years ago

Read 2 more answers