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3 years ago

-3(2x + 8) = A) -6x + 8 B) 6x + 24 C) -6x + 24 D) -6x - 24

Mathematics

1 answer:

Katen [24]3 years ago

5 0

Answer:

Step-by-step explanation:

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Can you show me how to solve tax rates in this problem?

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Answer:

7.49 + 12.52 +0.7=

Step-by-step explanation:

20.07 so B correct me if im wrong

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3 years ago

Let A = { x ∈ R : x 2 − 5 x + 4 ≤ 0 } , B = (3 , 5), and C = (3 , 4]. Show that A ∩ B = C . (Recall, you must show two separate

kolbaska11 [484]

Answer:

You can proceed as follows:

Step-by-step explanation:

First solve the quadratic inequality $x^{2}-5x+4\leq 0$ . To do that, factorize, then we have that $(x-4)(x-1)\leq 0$ . This implies that

$x-1\leq 0\, \text{and}\, x-4\geq 0$

$x-1 \geq 0\, \text{and}\, x-4\leq 0$

In the first case the solution is the empty set $\emptyset$ . In the second case the solution is the interval $1\leq x \leq 4$ . Now we have that

$A=[1,4]$

$B=(3,5)$

$C=(3,4]$ .

To show that $A\cap B\subseteq C$ consider $x\in A\cap B$ . Then $1\leq x \leq 4\, \text{and}\, 1$ , this implies that $3$ , then $x\in C$ . Now, to show that $C\subseteq A\cap B$ consider $x\in C$ , then $3$ , then $1\leq x \leq 4\, \text{and}\, 3$ , then $x\in [1,4] \, \text{and}\, x\in (3,5)$ , this implies that $x\in A\cap B$ .

Observe the image below.

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4 years ago

Which step is the same in the construction of parallel lines and the construction of a perpendicular line to a point off a line?

TiliK225 [7]

Answer:

Place the compass on a point on the original line.

Step-by-step explanation:

If the compass is placed on the original line point, then is will be the exact same spot and angle for the other line. They should met and form a right angle .

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3 years ago

What is the mean average of these five number [2,4,5,6,8]

nikklg [1K]

Answer:

Step-by-step explanation:

Add each number up and then divide by how many numbers there are in this set (5)

2+4+5+6+8=25

25/5=5

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3 years ago

Graph the function f(x) = x squared + 4x = 12 on the coordinate Plane

kolbaska11 [484]

Answer:

x = -6

y = -12

minimum y = -16

Step-by-step explanation:

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3 years ago