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const2013 [10]
3 years ago
9

Please look please asap

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
7 0
This may be 3 or it also may be 3
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What is the solution of the system x − 3y = –13 and 5x + 7y = 34? A. `x = (6)/(5)`, y = 4 B. `x = (7)/(2), y = (9)/(2)` C. `x =
Masteriza [31]

For this case we have the following system of equations:

x-3y = -13\\5x + 7y = 34

From the first equation we clear "x":

x = -13 + 3y

We substitute in the second equation:

5 (-13 + 3y) + 7y = 34

We apply distributive property:

-65 + 15y + 7y = 34

We add similar terms:

-65 + 22y = 34

We add 65 to both sides:

22y = 34 + 65\\22y = 99

We divide between 22 on both sides:

y = \frac {99} {22}\\y = \frac {9} {2}

We look for the value of the variable "x":

x = -13 + 3 \frac {9} {2}\\x = -13 + \frac {27} {2}\\x = \frac {-26 + 27} {2}\\x = \frac {1} {2}

Thus, the solution of the system is:

(x, y): (\frac {1} {2}, \frac {9} {2})

ANswer:

(x, y): (\frac {1} {2}, \frac {9} {2})

5 0
3 years ago
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David has 10 yd. Of material that he wiil cut into 15in. Thick mats. How many mats can David make?
Marysya12 [62]
<h2>Answer: He can make <u><em>24</em></u> mats.</h2>

Step-by-step explanation:

10 yards is equal to 360 inches. If you divided 360 inches by 15 inches, the answer will be 24. So the answer is 24 mats.

4 0
2 years ago
Please help me with this question
MA_775_DIABLO [31]

Answer:

B. 36

Step-by-step explanation:

4 0
3 years ago
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PLEASE ANSWER ASAP I NEED HELP. <br> IT WILL BE MUCH APPRECIATED<br> find the product (x+4)(x-3)
iragen [17]

Answer:

Work shown below!

Step-by-step explanation:

(x + 4)(x - 3) = x^{2} -3x+4x-12=x^{2} +x-12

8 0
3 years ago
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2. What percent of cal Rs 80 is Rs 20 ? ​
SpyIntel [72]

Answer:

Hope this is helpful to you

7 0
2 years ago
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