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3 years ago

Match each fraction, decimal, or percent with an equivalent fraction, decimal, or percent

Mathematics

1 answer:

Alik [6]3 years ago

5 0

Answer: 2/25 as a percent is 8% and as a decimal is 0.08 and what is your question I don't really understand?

Step-by-step explanation:

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Find the expected value for the random variable. | 9 12 15 18 21 P(z) 0.16 0.25 0.36 0.17 0.06 Z E(z) = (Type an integer or a de

dmitriy555 [2]

Answer:

The expected value for the random variable is 14.16.

Step-by-step explanation:

We are given the following data below;

Z P(Z) $Z \times P(Z)$

9 0.16 1.44

12 0.25 3

15 0.36 5.4

18 0.17 3.06

21 0.06 1.26

Total 1 14.16

Now, the expected value for the random variable Z is given by;

E(Z) = $\sum Z \times P(Z)$

= $(9 \times 0.16) + (12 \times 0.25) +......+(21 \times 0.06)$

= 14.16.

5 0

4 years ago

If You Have To Pay Someone $279 In Denominations Of $20 Or Less, What Is The Least Number Of Bills You Could Use?

Sholpan [36]

You can use 27 $10 bills which gets your at a total of $270 then you can use 1 $5 bill so now you're at $275 then you can use 4 $1 bills that gets you at your total of $279. The least number of bills you can use is 32.

3 0

3 years ago

The price of a packet of salt goes up by 9 cents. The old price is four-fifths of the new price. Find the old and new prices.

Julli [10]

Answer:

The old price was 36 cents.

The new price is 45 cents.

8 0

4 years ago

Segment AB is being dilated with the center at the origin. The image of A, point A" has coordinates of (3.2, 6.4). What is the s

insens350 [35]

Answer: The correct option is

(A) The scale factor is 0.8 and the coordinates of point B" are (–3.2, –4.8).

Step-by-step explanation: Given that the segment AB is being dilated to A''B'' with the center at the origin. The image of A, point A" has coordinates of (3.2, 6.4).

We are to find the scale factor of the dilation and the co-ordinates of the point B''.

From the given graph, we note that

the co-ordinates of point A are (4, 8).

Now, If S is the scale factor of dilation, then we must have

$S\times (4,8)=(3.2,6.4)\\\\\Rightarrow (4S,8S)=(3.2,6.4)\\\\\Rightarrow S=\dfrac{3.2}{4}=\dfrac{6.4}{8}=0.8.$

So, the scale factor is 0.8.

Now, the co-ordinates of point B are (-4, -6). So, the co-ordinates of B'' will be

$(-4\times 0.8,-6\times 0.8)=(-3.2,-4.8).$

Thus, the correct option is

(A) The scale factor is 0.8 and the coordinates of point B" are (–3.2, –4.8).

4 0

4 years ago

Read 2 more answers

PLS HELP! WILL GIVE BRAINLIEST!!

Alisiya [41]

Answer:

i really wish i can help u but i dont know the answer

Step-by-step explanation:

4 0

4 years ago