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abruzzese [7]
3 years ago
10

Write and solve a system of equations to find the value of each variable

Mathematics
1 answer:
ozzi3 years ago
3 0

Answer:

Step-by-step explanation:

2x+5y=12

3x+4y=11

---------------

3(2x+5y)=3(12)

-2(3x+4y)=-2(11)

-----------------------

6x+15y=36

-6x-8y=-22

-----------------

7y=14

y=14/7=2

2x+5(2)=12

2x+10=12

2x=12-10=2

x=2/2=1

x=1, y=2. (1, 2)

---------------------

I just provided you an example of a system of equations and I already solved it for you.

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Simplify the expression 56-2(4+x)
lesya692 [45]

Answer:

48+x

Step-by-step explanation:

56-2(4+x)

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48+x

5 0
3 years ago
Write the equation of the line that passes through the points (-2,-5)(−2,−5) and (8,-8)(8,−8). Put your answer in fully reduced
Nadya [2.5K]

Answer:

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Step-by-step explanation:

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3 years ago
Express 3/4 in sixty- fourths
Marrrta [24]
If you want 3/4 in 64's, multiply the numerator (3) by 16, as 4 x 16 = 64. 

<span>3 x 16 </span>
<span>--------- </span>
<span>4 x 16 </span>

<span>= 48/64</span>
4 0
3 years ago
Assume that random guesses are made for seven multiple choice questions on an SAT​ test, so that there are equals 7 ​trials, eac
NeTakaya

Answer: 0.5

Step-by-step explanation:

Formula for binomial probability :-

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Given : The number of trails : n=7

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Now, the probability that the number x of correct answers is fewer than 4 will be :-

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Hence, the probability that the number x of correct answers is fewer than 4 = 0.5

4 0
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Read 2 more answers
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zaharov [31]
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