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maksim [4K]
3 years ago
11

Solve the system x - 2y = -6 3x + y = -4

Mathematics
1 answer:
stepan [7]3 years ago
5 0


{x-2y=-6

{3x+y=-4     /*2

{x-2y=-6

<u>{6x+2y=-8     </u> (+)

7x=-14    /:7

x=-2

3x+y=-4

3*(-2)+y=-4

-6+y=-4

y=2

Solution:  (-2; 2)

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What is the solution to the inequality - 6x + 5 &gt; -1
ExtremeBDS [4]

[ Answer ]

\boxed{X \ < \ 1}

[ Explanation ]

  • Solution To Inequality: - 6x + 5 > -1

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

  • Subtract 5 From Both Sides

- 6x + 5 - 5 > -1 - 5

  • Simplify

-6x > -6

  • Multiply Both Sides By -1 (Reverse Inequality)

(-6x)(-1) < (-6)(-1)

  • Simplify

6x < 6

  • Divide Both Sides By 6

\frac{6x}{6} < \frac{6}{6}

  • Simplify

X < 1

\boxed{[ \ Eclipsed \ ]}

4 0
3 years ago
Selina didn't use the distributive property correctly. Where did she go wrong? Explain your thinking.​
GarryVolchara [31]

Answer:

PEMDAS

Step-by-step explanation:

Well, I don't know if there should be a picture of the problem that should go with the question. But a trick for solving distributive property is to use the trick PEMDAS In order.

For Example:

P-Paraenthese

E-Exponent

M-Multiply

D-Divide

A-Add

S-Subtract

NOTE!

Remember to always Multiply and divide BEFORE adding and subtracting.

Hoped this helped!

6 0
3 years ago
Find the area of this trapezoid.
timurjin [86]

Answer:

7.5 units squared

Step-by-step explanation:

Equation for solving the area is A = 1/2h(b1 + b2).

The bases here have a length of 4 and 1, so we add them together. The height is 3, so our equation is 1/2 * 3(5) = 7.5

8 0
2 years ago
9x2/3 help due in 3 min
sattari [20]

Answer:

6

Step-by-step explanation:

9/1 × 2/3

(9 × 2 = 18)

(1 × 3 = 3)

18 ÷ 3 = 6

7 0
3 years ago
How do you write y=-4x^2-16x-14 in vertex form??
GREYUIT [131]

y= -4x² - 16x - 14


Take the coefficient of x² as the common factor

y = - 4(x² + 4x + 7/2)


Add (b/2)² to complete the square

y = - 4( x² + 4x + 2² - 2² + 7/2)


Complete the square

y = -4( (x + 2)² - 1/2)


Remove the bracket

y = -4(x + 2)² + 2


Answer: y = -4(x + 2)² + 2

8 0
3 years ago
Read 2 more answers
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