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quester [9]
3 years ago
15

All of the following expressions are equivalent except.___ 2+m m+2 m-(-2) -2-m

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
4 0

Answer:

\Huge \boxed{-2-m}

Step-by-step explanation:

2 + m

Rewrite with variable first.

m + 2

m + 2

Can’t be simplified further.

m - (-2)

Distribute negative sign.

m + 2

-2-m

Rewrite with variable first.

-m - 2

The last expression is not equivalent to m+2.

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jarptica [38.1K]

Answer:

ok cool

Step-by-step explanation:

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3 0
3 years ago
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A diver needs to descend to a depth of 100 feet below sea level. She wants to do it in 5 equal descents. How far should she trav
nikklg [1K]

Answer:

She needs to descend 20 feet per descent.

Step-by-step explanation:

100/5 = 20

8 0
3 years ago
(x+2)(x-18)=0<br><br>FIND THE SOLUTIONS OF THE EQUATION
vladimir2022 [97]
Either one at any given time could be equal to zero. So
x + 2 = 0
x = - 2

x - 18 = 0
x = 18

I've enclosed a graph of this so you can see that the answers I've given are the ones expected.

6 0
3 years ago
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A jar contains 4 red marbles, 3 green marbles, 2 white marbles, and 1 purple marble. You randomly grab 5 marbles. Of the groups
Fiesta28 [93]

Answer:

126

Step-by-step explanation:

To calculate this, we need to assume at least one white marble will be picked... so let's take it out of the bag. Then we need to pick 4 more marbles... it's just then a combination calculation.

How many marbles is there in total?  4 + 3 + 2 + 1 = 10

We do just as if we had removed one white marble from the bag... so that leaves 9 in the bag.

We have to pick 4 out of those 9.... so, it's simple combination calculation:

C(9,4) = 9! / (4! (9--4)!) = 9! / (4! 5!) = 126

Some of those grabs will have 2 white marbles... but we're assured that there are 126 ways to combine the 10 marbles so there's at least one white in the 5 picked (since we forced it in our calculations).

6 0
3 years ago
To make a salad dressing, a chef uses a ratio of 2 ounces of oil to 6 ounces of vinegar. The chef needs 24 ounces of dressing. H
MrRa [10]

Answer:

6 ounces of oil

Step-by-step explanation:

Well the first salad dressing is probably 8 ounces because 2+6 = 8

Then we must find out how large this recipe compares to the original

24/8 = 3

So we need all the ingredients to be tripled to keep the same ratio of 2:6

The new dressing has 2*3 ounces of oil and 6*3 ounces of vinegar

which equals 6 ounces of oil and 18 ounces of vinegar.

Hope this helps!

(pls mark brainliest)

7 0
3 years ago
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