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kaheart [24]
3 years ago
14

Select the correct answer from each drop-down menu?

Mathematics
1 answer:
ahrayia [7]3 years ago
5 0

9514 1404 393

Answer:

  • second
  • 3
  • first
  • is

Step-by-step explanation:

We observe that the second equation of System B has had the x-term eliminated. That can be accomplished by adding 3 times the first equation to the second.

"To get System B, the <u> second </u> equation in System A was replaced by the sum of that equation and <u> 3 </u> times the <u> first </u> equation. The solution <u> is </u> the same as the solution to System A."

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Which binomial is equivalent to 3(x - 1) – 2(x – 3)?
PilotLPTM [1.2K]

Answer:

x+5

Step-by-step explanation:

3(x-1) -2(x-3)

3x-1-2x+6

x+5

5 0
3 years ago
Out of 25 children, 10 children like science subject and 15 children like English. 7 children like both the subjects.
sesenic [268]
<h2>Question:</h2>

Out of 25 children, 10 children like science subject and 15 children like English. 7 children like both the subjects. How many students don't like any subject?

<h2>Answer:</h2>

7 children.

<h2>Step-by-step explanation:</h2>

This can be solved by drawing a Venn diagram. The diagram is attached to this response.

<em>Given</em>:

Total number of children = 25

Number that like both subjects = 7

Number that like science = 10

Number that like English = 15

<em>Unknown</em>

Let the number of children that like science alone be s

Let the number of children that like English alone be e

Let the number of children that do not like any subject be x

s = Number that like science - number the like both subjects.

s = 10 - 7

s = 3

e = Number that like English - number the like both subjects.

e = 15 - 7

e = 8

Total number of children = Number that like science alone + Number that like English alone + Number that like both subjects + Number that do not like any subject.

<em>This implies that;</em>

25 = 3 + 8 + 7 + x

<em>Solving for </em><em>x</em><em> gives;</em>

25 = 18 + x

x = 25 - 18

x = 7

Therefore, 7 children do not like any subject.

3 0
3 years ago
Solve the Quadratic equation<br> 8n²-56=48n
Whitepunk [10]

Answer:

n = {-1, 7}

Step-by-step explanation:

8n² - 56 = 48n

Subtract 48n from both sides

8n² - 48n - 56 = 0

Divide both sides by 8

n² - 6n - 7 = 0

Factor

alternately use the quadratic equation or complete the square

(n - 7)(n + 1) = 0

n = {-1, 7}

3 0
3 years ago
I need an answer right now
amm1812

Answer:

Step-by-step explanation:

(1x/4 + 1/7) + (3x/8 - 1/3) = x/4 + 3x/8 + 1/7 - 1/3

                                      = x*2/4*2 + 3x/8 + 1*3/7*3 - 1*7/3*7

                                      = 2x/8 + 3x/8 + 3/21 - 7/21

                                      = (2x+3x)/8 + (3-7) /21

                                      = 5x/8 + (-4)/21

                                       = 5x/8 - 4/21

8 0
4 years ago
What is the equation to find area of a parallelogram
olchik [2.2K]

A=BH


Area = Base x the Hight

6 0
3 years ago
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