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gayaneshka [121]
4 years ago
7

Please help me with this question

Mathematics
1 answer:
tensa zangetsu [6.8K]4 years ago
3 0

Answer:

10.5 inches.

Step-by-step explanation:

divide 42 by 4.

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Evaluate (25)2 · 52 + 10
Marrrta [24]

Answer:

2610

Step-by-step explanation:

For this question, we can use P.E.M.D.A.S.

Parentheses

Exponent

Multiplication

Division

Addition

Subtraction

(25)2 * 52 + 10

50 * 52 + 10

2600 + 10

2610

8 0
3 years ago
Read 2 more answers
Suppose that first-, second-, and third-place winners of a contest are to be selected from eight students who entered. in how ma
11111nata11111 [884]
As, order is important so we use permutation,
total no. of students= n=8
selected students= r=3

nPr= n!/(n-r)! = 8!/(8-3)! =336 different ways
6 0
3 years ago
Twice the sum of a number and 7 is equal to three times the difference of the number and 8.
Vlad [161]
First, set up what you know. Twice the sum of a number and seven means: 2x+7. Three times the difference of the number and 8 is 3(x-8).

Set both of them equal to each other and you'll get this:
2x+7 = 3(x-8)
Afterwards just follow through with algebra.
2x+7 = 3x - 24

2x + 31 = 3x

31 = 3x - 2x

31 = x

Afterwards check your work to see if it is correct.
2(31) + 7 = 3( 31 - 8 )

62 + 7 = 3(23)

69 = 69

4 0
3 years ago
PLEASE HELP!! solve |2x-2| ≥6.
Anastaziya [24]
<h3>Answer:</h3>

x ≤ -2    OR  x ≥ 4

__________________________________________________________

<h3>Step-by-step explanation:</h3>

<u>We are given the inequality:</u>

|2x - 2| ≥ 6

Getting rid of the Modulus:

Since 2x-2 is in modulus:

|2x-2| =  -(2x-2)    OR   2x-2

<em>(since the modulus of both these values is 2x-2)</em>

Hence, our inequality can be written in 2 different ways:

  1. 2x-2 ≥ 6                              <em>(if 2x-2 ≥ 1)</em>
  2. -(2x - 2) ≥ 6                         <em>(if 2x-2 < 0)</em>

__________________________________________________________

<u>Solving these 2 inequalities:</u>

Solving inequality 1:

2x - 2 ≥ 6                

2x ≥ 8                     [<em>adding 2 on both sides]</em>

x ≥ 4                       [<em>dividing both the sides by 2]</em>

This is the solution of the inequality if: 2x-2 ≥ 0

Solving Inequality 2:

-(2x-2) ≥ 6

<em>It can be rewritten as:</em>

2 - 2x ≥ 6                

2 ≥ 6 + 2x                [<em>adding 2x on both the sides]</em>  

-4 ≥ 2x                     [<em>Subtracting 6 from both sides]</em>

x ≤ -2                       [<em>Dividing both sides by 2]</em>

This is the solution of the given inequality if: 2x-2 < 0

__________________________________________________________

<u>Solution of the given Inequality:</u>

Therefore, the solution of the given inequality |2x-2| ≥ 6 are:

x ≥ 4   <em>(if 2x-2 </em>≥ 0)

x ≤ -2  <em>(if 2x-2 < 0)</em>

Hence, option C is correct!

6 0
3 years ago
Does anybody know the answer to (-6)(2)+(-8\4
forsale [732]

Answer:

12

Step-by-step explanation:

because i am smart a durh

6 0
3 years ago
Read 2 more answers
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