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Mathematics

2 answers:

guapka [62]2 years ago

4 0

20 decreased by 15% is equivalent to 20 - 15%. And 20 - 15% equals 17. So the answer is 17. (Not sure how to show my work love sorry, but that's the correct answer.)

WARRIOR [948]2 years ago

3 0

What is that supposed to mean

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Please i need help it’s a timed test

Fofino [41]

The function can use all values of x which means x is in between -inf and +inf. The first option expresses this.

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2 years ago

What is half of 9 1/4

hodyreva [135]

Half of 9 1/4 is 4 5/8 or 37/8

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2 years ago

Which ofnthe following shows the correct use of distributive property when solving 1/3(33-x)=135,2

madam [21]

Answer: OPTION C.

Step-by-step explanation:

The missing options are:

$A. (33 - x) = \frac{1}{3} * 135.2\\\\B. (\frac{1}{3} *33) - \frac{1}{3} x = \frac{1}{3} * 135.2\\\\C.(\frac{1}{3} * 33) - \frac{1}{3} x = 135.2\\\\D. (\frac{1}{3} * 33) + \frac{1}{3} x = 135.2$

In order to solve this exercise you need to remember the following:

1. The Distributive property states that:

$a(b+c)=ab+ac\\\\a(b-c)=ab-ac$

2. The multiplication of signs:

$(+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-$

In this case the exercise gives you the following equation:

$\frac{1}{3}(33-x)=135.2$

Since you need to solve for the variable "x" in order to find its value, the first step you must apply in the in the procedure is to eliminate the parentheses applying the Distributive property.

Then, you must multiply everyting inside the parentheses by $\frac{1}{3}$ .