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dimaraw [331]
3 years ago
9

Hello anyone to help ​

Mathematics
2 answers:
Murljashka [212]3 years ago
4 0

Answer: You bought 7 books and you also bought 4 magazines

Explanation:

x = # of books purchased

y = # of magazines purchased

System of equations:

8x + 5y = 76
x + y = 11

Let’s use elimination in this case, but substitution can also work.

8x + 5y = 76
Multiply the (x + y = 11) by -8

We get:

8x + 5y = 76
-8x - 8y = -88
The xs cancel.
Add like terms.
-3y = -12
Divide by -3 on both sides
y = 4

Now plug in 4 into the (x + y = 11) equation to get x.

x + (4) = 11
Subtract 4 on both sides
x = 7
lora16 [44]3 years ago
4 0

Answer:

b+m = 11  

8b + 5m = 76  

 b = 11-m  

substitute  

  8(11-m)+5m = 76  

   88 - 8m + 5m = 76  

    12 = 3m  

   4 = m    7 = b  

check  

  4*5 + 7*8 ?=? 76  

  20 + 56 = 76    the answer is correct.

Step-by-step explanation:

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Answer:

Step-by-step explanation:

An eigenvalue of n × n is a function of a scalar \lambda  considering that there is a solution (i.e. nontrivial) to an eigenvector x of Ax =  

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3 0
3 years ago
Based on the slipes of the equation, how many solutions does this system have Y=3x-4 y=-2x+7
Dmitrij [34]

Answer:

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Step-by-step explanation:

8 0
4 years ago
Tessa shot 36 free Throws.she made 27 of them.what fraction of the free throws did she make?
frez [133]

For this case we have the following variables:

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Answer:

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Hi! 
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4 0
3 years ago
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