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4 years ago

Christopher has 1,224 pencils and 4,563. If he shares pencils among 9 friends, how many pencils does each friend get?

Mathematics

1 answer:

pentagon [3]4 years ago

5 0

Answer:

643 i think.

Step-by-step explanation:

Because 1224 plus 4563 equals 5787 and divide thag total by 9 which should get an answer of 643.

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For each expression, select all equivalent expressions from the list.

ratelena [41]

$\qquad\qquad\huge\underline{{\sf Answer}}$

Let's find the equivalent expressions ~

#1. PROBLEM

$\qquad \tt \dashrightarrow \:11x - 4x + 10x$

$\qquad \tt \dashrightarrow \:21x - 4x$

$\qquad \tt \dashrightarrow \:17x$

#2. PROBLEM

$\qquad \tt \dashrightarrow \:2(1 + 8y)$

$\qquad \tt \dashrightarrow \:(2 \times 1) + (2 \times 8y)$

$\qquad \tt \dashrightarrow \:2 + 16y$

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2 years ago

How do I graph y=2x if there is only slope

lord [1]

There is an invisible +0 at the end. this means the y intercept is 0

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3 years ago

If \: x + y + z = 0 \: then \: show \: that \: {x}^{3} + {y}^{3 } + {z}^{3} =3xy<br>

tankabanditka [31]

Answer:

Given

x+y+z=0

⟹x+y=−z

Cubing on both sides

(x+y) 3 =(−z) 3

⟹x 3 +y 3 +3x 2y+3xy 2 =−z 3

⟹x 3 +y 3 +3xy(x+y)=−z 3

⟹x 3+y 3+3xy(−z)=−z 3

⟹x 3 +y 3−3xyz=−z 3

⟹x 3 +y 3 +z 3 =3xyz

Step-by-step explanation:

Hope it is helpful.....

8 0

3 years ago

Jason went shopping.

melomori [17]

53.55 / 85 = 0.63

0.63 * 100 = 63

63 - 38 = 25

watch was 25 before discount

8 0

3 years ago

IQ scores have a mean of 100 and a standard deviation of 15. What percentile corresponds to an IQ score of 115? Explain the step

Kryger [21]

Answer:

The percentile that corresponds to an IQ score of 115 is 34.13 %

Step-by-step explanation:

Here, we want to find the percentile that corresponds to an IQ score of 115.

To calculate this percentile, we start with making observations. From the question, we are told that the mean score is 100 while the standard deviation is 15.

Now we want to find the percentile for a score if 115. For a score of 115, we can see that the difference between this score and the mean is 15 which is exactly equal to the standard deviation.

What this means is that the score is within +1 SD of the mean.

For a score of within +1 SD of the mean, the percentile is 34.13%

A score at the mean is the 50th percentile, a score which is 1 SD above or below the mean has a percentile value of 34.13%

Please, I will like you to check the attachment to see how percentiles are valued given the number of standard deviations a particular value is from the mean.

7 0

3 years ago