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3 years ago

What should be done first to simplify 18 - 3 + 5 + 2 - 13 + 12

Mathematics

1 answer:

vivado [14]3 years ago

5 0

Answer:

Go left to right

Step-by-step explanation:

Subtract 18 from 3 then add 5 the add 2 then subtract the 13 then add the 12

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A bowl contains 4 red marbles and 3 yellow marbles. Tim randomly draws 3 red marbles from the bowl. He replaces each marble afte

mr Goodwill [35]

So,

The probability of drawing a yellow marble is $\frac{3}{7}$ .
Since he replaces the marble after it is drawn out, the probability of drawing another yellow is the same: $\frac{3}{7}$ .

The probability of drawing a red marble is $\frac{4}{7}$ .

In order to get the probability of drawing 2 yellow marbles and 1 red marble, given that each marble is replaced after it is drawn out, we must multiply the fractions together.

$( \frac{3}{7} )( \frac{3}{7} )( \frac{4}{7} ) = \frac{36}{343}$

Because the order of the marbles doesn't matter, we will multiply the probability by 3.
$3( \frac{36}{343} ) = \frac{108}{343}$

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3 years ago

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Answer:

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Find the slope of the line graphed A) -1/2 ,B) -2, C) 1/2 D) 2

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2 years ago

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2 years ago

To solve -9 - 16m = 7, what steps would you use?

zlopas [31]

Answer:

M=-1

Step-by-step explanation:

To solve -9-16m=7 need to us Inverse operations.

What is inverse operation?

Inverse operation is an operation subtraction, addition, division, or multiplication that undo's the given operation.

As showed as the image below.

so our goal is to isolate the variable.

A variable is a symbol in math a variable is some type of Letter in the alphabet.

Isolate the variable means (shown in the image below)

so first what we need to move is a number.

-16 is being multiplied by m

so easiest number to move at this point is -9 its being subtracted so we need to add 9 on both sides to move it.

after this we need to move -16m to move it we need to divide by -16

At this point m will be on one side.

and we need to simplify the left side.

these steps are shown in the image below once you are done

M will equal something.

once we simplify we get

m=-1

we want to plug it in to see if we are correct

as show in my steps in the image.

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3 years ago