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alexgriva [62]
3 years ago
13

Using elimination process what is the answer for 14x+2y=18 -7x-4=9 use steps

Mathematics
1 answer:
AlekseyPX3 years ago
8 0
Step 1; multiple equation 2 by -2: 14x+8y=-18
step2: subtract this new equation from equation 1 to eliminate x:
2y-8y=18-(-18)
-6y=36
y=-6
step 3: substitute y=6 in equation 2: -7x-4*(-6)=9, -7x=-15, x=15/7
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Solve 5y - 2 = 3y + 14​
Valentin [98]

Answer: y=8

Step-by-step explanation:

5 0
3 years ago
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What is the answer (-32)^-3/5
horsena [70]
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\frac{1}{-32}^{ \frac{3}{5} }

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Answer: - \frac{1}{8}
4 0
3 years ago
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Please help i need this
Svet_ta [14]

Slope Formula - (y² - y¹) / (x² - x¹)

(1, 7)

x¹ = 1

y¹ = 7

(-4, -8)

x² = -4

y² = -8

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Hope this Helps!!


5 0
3 years ago
Heyy can you please help me posted picture of question
vichka [17]
We can use quadratic formula to determine the roots of the given quadratic equation.

The quadratic formula is:

x= \frac{-b+- \sqrt{ b^{2} -4ac} }{2a}

b = coefficient of x term = 4
a = coefficient of squared term = 1
c = constant term = 7

Using the values, we get:

x= \frac{-4+- \sqrt{16-4(1)(7)} }{2(1)} \\  \\ 
x=  \frac{-4+- \sqrt{-12} }{2}   \\  \\ 
x= \frac{-4+-2 \sqrt{-3} }{2} \\  \\ 
x= -2+- \sqrt{-3}

So, the correct answer to this question is option A
7 0
3 years ago
If x and y are both negative when is x-y positive
Vladimir [108]
X-y is positive when y is further away from 0, compared to x. In other words, when y is a larger negative

For example
x = -2
y = -5

x-y = -2-(-5) = -2+5 = 3
7 0
3 years ago
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