All categories

3 years ago

X3 - 2x2 + 1 = 0 is a quadratic equation. True False

Mathematics

2 answers:

wlad13 [49]3 years ago

8 0

Answer:

false

Step-by-step explanation:

RSB [31]3 years ago

5 0

Answer:

False

Step-by-step explanation:

Quadratic equations have the highest degree on x as 2 (a squared value). The given equation has x^3 (assuming x3 is x^3 and not 3x), meaning that the equation is a cubic equation.

You might be interested in

5(5t-2) = -35<br><br>show how to solve the given equation

Aloiza [94]

Distribute the 5
25t-10=-35
+10 +10
25t =-25
divide by 25 on both sides
t=-1

8 0

3 years ago

Add the rational expressions.7/2x(x+2)+x+3/x+2

Dmitrij [34]

Answer:

(7x^(3)+16x^(2)+4x+6)/(2x)

this is what i got idk if its correct though

Step-by-step explanation:

6 0

3 years ago

Please answer this question only if you know it! 25 points and brainliest!

krok68 [10]

Answer:

$\boxed{70^\circ}$

Step-by-step explanation:

Step 1. Calculate θ

$\begin{array}{rcll}70^{\circ} + \theta + 60^{\circ} & = & 180^{\circ} & \text{Angles of straight line}\\130^{^{\circ}} + \theta & = & 180^{\circ}} & \\\theta & = & 50^{\circ} & \\\end{array}$

Step 2. Calculate x

$\begin{array}{rcll}60^{\circ} + \theta + x & = & 180^{\circ} & \text{Interior angles of triangle}\\60^{\circ} + 50^{\circ} + x & = & 180^{\circ} &\\110^{^{\circ}} + x& = & 180^{\circ} & \\\\x & = & \boxed{70^\circ} & \\\end{array}$

4 0

3 years ago

The library is to be given 5 books as a gift. the books will be selected from a list of 21 titles. if each book selected must ha

Natali5045456 [20]

This is a combination problem. Order does not matter and the books are all different. You would write this as 21C5 or $\tbinom{21}{5}$ . Combinations are not fractions.

The answer is $\frac{21 * 20 * 19 * 18 * 17}{1 * 2 * 3 * 4 * 5}$

which = 20349 different ways these books can be chosen.

5 0

3 years ago

Read 2 more answers

Jackie already owns 19 necklaces, and additional necklaces are priced at 1 for a dollar. How

Marianna [84]

Answer: 13 dollars

Step-by-step explanation: if she already has 19, you just need to subtract that from 32.

5 0

4 years ago