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3 years ago

How do you solve a question algbraically

Mathematics

1 answer:

Julli [10]3 years ago

3 0

Answer:

Step 1: Multiply the entire first equation by 2.

Step 2: Rewrite the system of equations, replacing the first equation with the new equation.

Step 3: Add the equations.

Step 4: Solve for x.

Step 5: Find the y-value by substituting in 3 for x in either equation.

Step 6: Identify the solution as an ordered pair.

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3 x {(300 - 70 ÷ 5) - [3 x 23 - (8 - 2 x 3)]} A.657 B.2433 C. -843

Liula [17]

Answer:

657

Step-by-step explanation:

pemdas

5 0

3 years ago

Roll a die. Spin a spinner. How many outcomes are there?

natali 33 [55]

I got 10! [_-_]-{-_-}-(_-_)

7 0

2 years ago

What is 8x - ( 3x + 7 )= 23

slavikrds [6]

8x - 3x - 7 = 23
5x - 7 = 23
5x = 30
x = 30/5 = 6

3 0

2 years ago

Solve the system using elimination. 5x + 8y = –29 7x – 2y = –67

MA_775_DIABLO [31]

First, multiply the second equation by 4 so that 8y can cancel out. Now you have
5x+8y=-29
and
28x-8y=-268
Add these equations to get
33x=-297
Divide both sides by 33, and you have
x=-9
Now, simply solve for y by plugging it into an equation, and you have
y=2
The final answer is (-9,2)!

3 0

3 years ago

Read 2 more answers

Graph the following inequality 6x-2y>8 Please help me and show me how to graph it.

Svetradugi [14.3K]

Answer:

6x - 2y > 8

First, solve the inequality (Isolate the y-variable & put it in function format):

$6x - 2y > 8\\-2y > 8 - 6x\\(-1)(-2y) > (-1)(8-6x)\\2y < 6x-8\\y < \frac{6x-8}{2} \\y < 3x - 4$

Second, graph the function y = 3x - 4 on the graph.

It should be linear.
Because the inequality is < and not ≤, the values on the line aren't included in the solution, so your line should be dotted, not solid.

Third, shade in the area below the line(where y-values are smaller).

Since the inequality is <, that means the solutions are smaller than the solutions of the function 3x - 4.

8 0

3 years ago