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Soloha48 [4]
3 years ago
15

5 points

Mathematics
1 answer:
timama [110]3 years ago
8 0

Answer:

Step-by-step explanation:  We are given to graph the following equation on a  piece of paper:

Then, we are to select the correct choice of the graph that matches with the graph we have drawn.

Writing the inequality (i) as an equation, we get

Since it is a linear equation in two variables, so we need only two points to draw the graph.

At x = 0, we have

at x = -4, we have

So, (0, 2) and (-4, -1) are two points on the line.

We draw the line as shown in the attached figure below. Also, the line is dotted because the points on the line are not included.

Since  so the region below the straight line will be shaded.

We see that the drawn graph below matches with the graph (A).

Thus, the correct option is (A).

Step-by-step explanation:

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If the answer is "no solution," type NS.
Kay [80]

Answer:

Step-by-step explanation:    NS

6 0
3 years ago
When factored completely, what are the factors of 4x^2-16 ?
Semmy [17]
Use:a^2-b^2=(a-b)(a+b)\\\\4x^2-16=4(x^2-4)=4(x^2-2^2)=\boxed{4(x-2)(x+2)}
8 0
3 years ago
Read 2 more answers
Mickey simplified the expression below. He then checked his work by substituting 4 for x. He noticed his two values were not equ
xeze [42]

Full question attached:

Mickey simplified the expression below. He then checked his work by substituting 4 for x. He noticed his two values were not equal. What was Mickey’s error when simplifying?

Expression: 2x^2 - 4x - 9 - x^2 + 2x + 3

Simplified expression: x^2 - 6x - 6

ANSWER CHOICES:

Mickey should have added –4 and 2 when combining the coefficients of the x terms.

Mickey should have added 2 and 1 when combining the x^2 terms.

Mickey should have added 9 and 3 when combining the constant terms.

Mickey should have added –4 and –1 when combining the x terms.

Answer

Mickey should have added –4 and 2 when combining the coefficients of the x terms.

Explanation:

To simplify an expression means to group and organize the expression in a such a way that it becomes more understandable, and can now easily be solved

Given the expression 2x² - 4x - 9 - x² + 2x + 3 to simplify

We first group and find like terms and then add and cancel out

2x²-x²- 4x+2x - 9+ 3

=x²-2x-6

Mickey did not add the coefficients -4 and +2 for x terms in the expression, instead it looked like he added 4+2 as the coefficients

Therefore the correct option is

Mickey should have added –4 and 2 when combining the coefficients of the x terms.

8 0
3 years ago
Read 2 more answers
If the hypotenuse is c=a√2, then 6=a√2. In inches, what is the value of a?
Aloiza [94]

The value of a is 3√2 inches if it is given that the hypotenuse is c = a√2 and 6 = a√2. This can be obtained by using Pythagoras' theorem.

<h3>Calculate the value of a:</h3>

This question can be solved using Pythagoras' theorem,

If in a right angled triangle, hypotenuse is the longest side of the triangle and always opposite to the angle 90°, height and base are the two shorter sides which are adjacent to the angle 90°.

If hypotenuse = c, height = a and base = b then,

⇒ hypotenuse² = height² + base²

⇒ c² = a² + b²

Here in the question it is given that,

  • Hypotenuse of the triangle is c = a√2
  • 6 = a√2 in inches ⇒ c = 6
  • Height and base is equal and both has the value of a ⇒ height = a and base = a

By using the Pythagoras' theorem we can write that,

⇒ hypotenuse² = height² + base²

⇒  6² =  a² + a²

⇒  36 =  2a²

By dividing both sides of the equation by 2,

⇒  18 =  a²

⇒  a² = 18

By taking square on both side of the equation,

⇒ a = 3√2 inches

Hence the value of a is 3√2 inches if it is given that the hypotenuse is        c = a√2 and 6 = a√2.

Learn more about Pythagoras' theorem here:

brainly.com/question/9005379

#SPJ1

3 0
2 years ago
if the perimeter of square 1 is 104ft and the area of square 2 is 576ft^2, what is the side length of square (area of 3+area of
Semmy [17]

Answer: 576ft

Step-by-step explanation: We add 3 feet to this, giving us 11, then multiply this by 4 to get 44 feet for the perimeter. ... The area of a square is equal to the length of one side squared

8 0
3 years ago
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