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Brut [27]
3 years ago
11

If x + 5y = -11 and 2x − 3y = 17, what is the value of x + y?

Mathematics
1 answer:
aev [14]3 years ago
6 0
X+5y=-11 (1)
2x-3y=17 (2)

2(1)-(2)
2x+10y-2x+3y=-22-17
13y=-39
y=-3

Sub y=-3 in (1)
x+5(-3)=-11
x=4

So x+y= -3+4 =1



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Find the distance between the points (11, 4) and (10, 5).​
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Answer:

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Step-by-step explanation:

Start with the equation d= square root of (11-10)^2+(4-5)^2 where that is simplified to square root of (1)^2+(-1)^2 to square root of 1+1 to your final answer, square root of 2. Also simplified to 1.414213.

6 0
3 years ago
Consider the trinomial 6x2 13x 6. The value of ac is. The value of b is. The two numbers that have a product of ac and a sum of
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The value of ac is 36 and the value of b is 13. Then the value of ac + b is 49. The two numbers are 4 and 9.

<h3>What is polynomial?</h3>

Polynomial is an algebraic expression that consists of variables and coefficients. Variable are called unknown. We can apply arithmetic operations such as addition, subtraction, etc. But not divisible by variable.

Consider the trinomial 6x² + 13x + 6.

Compare with the standard equation, we have

ax² + bx + c

Then we have

a = 6

b = 13

c = 6

The product of ac will be

ac = 6 × 6 = 36

The sum of ac and b will be

ac + b = 36 + 13 = 49

The two numbers that have a product of ac and a sum of b are 4 and 9.

More about the polynomial link is given below.

brainly.com/question/17822016

6 0
2 years ago
Matthew has three brothers: Alex, Mark, and Luke. The sum of their three ages is 12. List all the different combinations of ages
daser333 [38]

Answer:

Step-by-step explanation:

Let Alex's age = x

Mark's age = y

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3. 4,4, 4

4, 2, 2, 8

5. 8, 2, 2

6. 2, 8, 2

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3 years ago
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Liula [17]

Answer:

Step-by-step explanation:

From the given set of data,

Stem-leaf plot will be,

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  0                    5 7

  1                     1 2 2 3 3 5 5 7 7 8 9  

  2                    0 2 5 6 8 8 8

  3                    5 8

  4                    4 8 9

  5                    2 5 7 8

  6

  7

  8                    0

Key for the given stem and leaf plot → 0 |  5 = 0.5

8 0
2 years ago
I need help with this pls! 15 points!
OLga [1]

Answer:

d

Step-by-step explanation:

8 0
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