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DochEvi [55]
3 years ago
7

What is the answer to 3-(x-2)+7​

Mathematics
1 answer:
hram777 [196]3 years ago
8 0

Answer:

3x+13

Step-by-step explanation:

-(x-2) =-x+2

3x+6+7

3x+13

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HELP PLEASE<br> someone its importent
elena-s [515]

Answer:

Step-by-step explanation:

<u>Expression on the board :</u>

12.2x + 50.6 y + 3(1.4x - 2.6y)\\\\= 12.2x + 50.6y + 4.2x - 7.8y\\\\= 16.4x + 42.8y

<u>Expression by the student </u>:

<em><u> Expression 1 </u></em>:

4 ( 4.1x + 10.7 y ) \\\\=  ( 4 \times 4.1x ) + ( 4 \times 10.7 y)\\\\= 16.4x + 42.8y\\\\

The expression 1 is equivalent to the expression on the board. Because the coefficients of x and y are same on both.

<em><u>Expression 2 :</u></em>

<em><u /></em>2 ( 6.1x + 25.3 y + 2.1x -3.9y)\\\\= 2 ( 8.2x + 21.4y)\\\\=( 2 \times 8.2x ) + (2 \times 21.4y)\\\\= 16.4x + 42.8y<em><u /></em>

The expression 2 is also equivalent to the expression on the board. Because the coefficients of x and y are the same.

5 0
3 years ago
Help with these im posting more so check
UkoKoshka [18]

Answer:

9 is c

10 is b

i think the last one is a but not too sure

Step-by-step explanation:

4 0
3 years ago
Trevor tosses a coin then rolls a die
schepotkina [342]

The probability of tossing heads and not rolling 5 is 31/32.

Let us assume a coin is fair and 2-sided.

A coin usually flips heads or tails.

Then to flip heads or tails equals  1/2

​ Consider flipping a coin 5 times.

Since a coin flip has two outcomes, then a coin flip 5 times has 2

5 =32 outcomes.

We may show the outcomes, e.g. use sample space S.

Then (1)S=(H,H,H,H,H),(H,H,H,H,T),…,(T,H,H,H,H),(T,T,T,T,T)

It must follow ∣S∣=32.

A helpful way to see may be S=H, T 5=H, Tx…Hx, T.

<h3>What is the formula for probability?</h3>

P(S)=1-P(A)

If you see the complement of at least 1 tail means 0 tails or 5 heads, then we must surely see 1 outcome, e.g. all heads.

Then it must follow at least one tail that has 31 outcomes,e.g.32–1=31.

To find or compute the probability, then fevorable possible in outcomes.

It means 31/32,

P(E)=1– 32/1= 32/31

​To learn more about the probability visit:

brainly.com/question/24756209

#SPJ1

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2 years ago
1,3,5,7... next number in the pattern
strojnjashka [21]
9 is the next number in the pattern
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3 years ago
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Thepotemich [5.8K]

Answer:

Step-by-step explanation:

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