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2 years ago

A sports shop had 80

Mathematics

2 answers:

Fynjy0 [20]2 years ago

6 0

Answer:

30% = -0.1

Step-by-step explanation:

scoray [572]2 years ago

3 0

37.5% I think but if it isn't it think 56% but I think it is 37.5%

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Translate a algebraic expression .four less than four times a number. the translation is? type an expression using x as the vari

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2 years ago

Which two points on the number line are opposites? A number line going from negative 2 to positive 2 in increments of 1. There a

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Answer:

Points B and C are opposite

Step-by-step explanation:

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The degree of the polynomial 10x^3 + 2x^m y - 4y is 3. What is the value of m?

Mumz [18]

Answer:

Step-by-step explanation:

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2 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 $x\in A\cap B$ .