Solve for x. A.90 B.100 C.135 HELP ME

DIA [1.3K]

This is a quadratic equation, which is also a polynomial. Polynomials all have the domain (-infinity, +infinity).

As for the range: You can see from the graph that the smallest y-value is -2. Thus, the range is [-2, infinity).

4 0

3 years ago

Lin has 8 green apples and 2 red apples. If he slices the green apples into eighths , how many apple slices will he have?

solniwko [45]

The answer is 80 slices in total 64 for red apple and 16 for green apple

5 0

3 years ago

Read 2 more answers

Given that $x \le -7,$ identify all the correct conclusions. (A) $3x \le -21.$ (B) $3x \ge -21.$ (C) $-3x \le 21.$ (D) $-3x \ge

exis [7]

Answer:

Options A and D are correct choices.

Step-by-step explanation:

We have been given an inequality $x\leq -7$ and we are asked to find the correct options from our given choices.

Let us solve inequalities in our given options one by one to see which of these matches with our given inequality.

(A) $3x\leq -21$

$x\leq \frac{-21}{3}$

$x\leq -7$

We can see that option A gives the same answer as our given inequality, therefore, option A is the correct choice.

(B) $3x\geq -21$

$x\geq \frac{-21}{3}$

$x\geq -7$

This inequality represented in option C gives solution that x should be greater than or equal to -7, which is opposite to our given inequality, therefore, option B is incorrect.

(C) $-3x\leq 21$

Dividing inequality by a negative number swaps inequality sign.

$x\geq \frac{21}{-3}$

$x\geq -7$

This inequality gives solution that x should be greater than or equal to -7, which is opposite to our given inequality, therefore, option C is incorrect.

(D) $-3x\geq 21$