Why -4 x (-4) = 16 not -16? Simple...

1 answer:

4 0

The reason why it is a positive 16 and not a negative 16, is because when you multiply a negative number with another negative number you will always get a positive number. But, if you multiple a negative number with a positive number, you will get a negative. So, in order for you to get a -16, the equation would have to be -4*4=-16.

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The value Of a painting begins at $12,000 and increases by $500 per year write an equation representing the value V of the paint

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The equation is 12000+500y=v.

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3 years ago

Pls help me with this math.

nadezda [96]

Michael made the first error when he did not do +10 on both sides in step 2 (he did not change the sign of -10 to +10 on the right side).

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2 years ago

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Which is bigger 3/4 or 4/5

Darya [45]

Well this is easier to look at when you turn them into decimals.

3/4 = 0.75

and..

4/5 = 0.8

0.8 is bigger than 0.75
So this means..

4/5 is bigger!!

Good Luck! :)

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4 years ago

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tekilochka [14]

Answer:

ME=0.014

Sample Proportion=0.725

Step-by-step explanation:

-The margin of error is defined as the percentage by which obtained results differ from the real population value.

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$ME=\frac{1}{2}[CI_u-CI_l]\\\\=0.5[0.739-0.711]\\\\=0.014$

Hence, the margin of error is 0.014

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Hence, the sample proportion is 0.725

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4 years ago

Cup o’ Coffee buys its coffee for $1.25 a cup. The coffee shop then sells each cup for $3.75. What is the percent markup for a c

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Answer:

47%

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rounding up, 5 keeps the 7 as is, 7 is greater than 5, therefore the 8, becomes a 9, 9 is greater than 5, so the 6 becomes a 7, .047.

move the decimal three digits to the left and you get, 47%.

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