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sleet_krkn [62]
3 years ago
8

For each expression, write an equivalent expression that only uses addition a. 20 - 9 + 8 -7 b. 4x - 7y - 5z + 6 c. -3x - 8y - 4

- 8/7z
Mathematics
1 answer:
Genrish500 [490]3 years ago
3 0

Answer:

a. =11+ 1

b. =4x+ (-7y) + (-5z) +6

c. (-3x) + (-8y) +(-4)+(-8/7z)

Step-by-step explanation:

a. 20 - 9 + 8 -7

=11+ 1  ( this is obtained by solving)

b. 4x - 7y - 5z + 6

=4x+ (-7y) + (-5z) +6

We multiply the negative sign with the positive sign to get a minus so the answer remains the same and the expression is written as an addition sum.

c. -3x - 8y - 4 - 8/7z

-[ 3x+8y+4+8/7z]

or

(-3x) + (-8y) +(-4) +(-8/7z)

The minus sign is taken as common leaving the expression with the plus only.

It can be written in the same manner as above, adding the negative terms so that the expression is written as a sum.

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Answer:

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= 9+72

Discriminant = 81

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Answer:

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Step-by-step explanation:

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As part of a quality-control study aimed at improving a production line, the weights (in ounces) of 50 bars of soaps are measure
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Answer:

Step-by-step explanation:

Hello!

The variable of interest is the weight in ounces of a soap bar.

Attached is a QQplot diagram.

A Q-Q plot is a diagram that compares two probability distributions, in this case, the probability distribution of the data set against the theoretical normal distribution. If the observed data matches the theoretical sets, you can say that that population follows said distribution.

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The graph below shows the number of cups of lemonade that Jermaine and Amelia sold using five different recipes.
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Answer:

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Step-by-step explanation:

A function shows the relationship between a dependent variable and an independent variable. A dependent variable changes as other variables change while an independent variable.

From the function given, the dependent variable is the cups sold which i dependent on the lemons used (independent variable).

From the points, when the lemons used was 3 the cups sold was 37, when the lemons used was 4 the cups sold was 32, when the lemons used was 5 the cups sold was 40, when the lemons used was 6 the cups sold was 35 and when the lemons used was 7 the cups sold was 26.

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