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2 years ago

Simplify the expression. 28 + 4 2 A. 9 B. 11 C. 16 D. 22

Mathematics

2 answers:

padilas [110]2 years ago

8 0

Answer:

C) 16

Step-by-step explanation:

$\dfrac{28+4}{2}=\dfrac{32}{2}=16$

Andrew [12]2 years ago

6 0

$\\ \rm\hookrightarrow \dfrac{28+4}{2}$

Break

$\\ \rm\hookrightarrow \dfrac{28}{2}+\dfrac{4}{2}$

Solve

$\\ \rm\hookrightarrow 14+2$

$\\ \rm\hookrightarrow 16$

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Each of the skiers above have the same weight of 100 pounds. Which skier (yellow or blue) has the greatest gravitational potenti

KIM [24]

Answer:

The highest.

Step-by-step explanation:

I'm assuming there is supposed to be a picture but the skier highest on the mountain will have the greatest gravitational potential energy.

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3 years ago

if you have the numbers 1,4,5 and 8 in in a box and Kelly randomly chose one tile and placed it back and chose another tile what

chubhunter [2.5K]

hello

to solve this question, we need to use know the number of possible outcomes

$\begin{gathered} \text{probability = }\frac{nX}{nS} \\ S=\text{ number of possible outcomes} \\ X=\text{ number of events} \end{gathered}$

let's find the number of possible outcomes

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1 year ago

Sinead bought 2 shirts for $15.95 each and a pair of shoes for $42.14. If she paid for the items with a $100 bill, how much chan

Scilla [17]

Answer:

D. 25.96

Step-by-step explanation:

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3 years ago

7.<br> 81,46,73,32, 54,81, 20, 41<br> Median

sukhopar [10]

Answer:

Step-by-step explanation:

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3 years ago

Two methods, A and B, are available for teaching a certain industrial skill. The failure rate is 15% for A and 5% for B. However

baherus [9]

Answer:

P(A | F) = 81.81%

There is 81.81% probability that worker was taught by method A given that he failed to learn it correctly.

Step-by-step explanation:

The failure rate is 15% for A which means that

P(F | A) = 0.15

The failure rate is 5% for B which means that

P(F | B) = 0.05

Method B is more expensive and hence is used only 40% of the time which means that

P(B) = 0.40

Which means that A is used the other 60% of the time

P(A) = 0.60

A worker is taught the skill by one of the methods but fails to learn it correctly.

We are asked to find the the probability that he was taught by method A.

So that means we want to find out

P(A | F) = ?

We know that according to Baye's rule,

$P(A \:|\: F) = \frac{P(F \:|\: A)\times P(A) }{P(F \:|\: A)\times P(A) + P(F \:|\: B)\times P(B) }$

Substitute the given probabilities into the above equation

$P(A \:|\: F) = \frac{0.15\times 0.60 }{0.15\times 0.60 + 0.05\times 0.40}\\\\P(A \:|\: F) = \frac{0.09 }{0.09 + 0.02}\\\\P(A \:|\: F) = 0.8181 \\\\P(A \:|\: F) = 81.81\%$

Therefore, there is 81.81% probability that worker was taught by method A given that he failed to learn it correctly.

7 0

4 years ago