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Alex_Xolod [135]
3 years ago
15

What is the answer? Please Answer it?

Mathematics
1 answer:
bezimeni [28]3 years ago
7 0

Answer:

2, 5

Step-by-step explanation:

hope this helps

please mark me brainliest

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Damita wants to read a 257-page book in one week,she plans to read 36 pages each day, will she reach jer goal? Explain
Anastasy [175]
Yes, because if you multiply 36 pages with seven days the answer was 252 pages. but ir could be 36 pages and a half
3 0
3 years ago
Solve 3(x + 1) + 6 = 33 ​
krek1111 [17]

Answer:

3(x + 1) + 6 = 33

3x+3+6=33

3x+9=33

3x=33-9

3x=24

x=24/3

x=8

Step-by-step explanation:

hope it help ^_^

6 0
3 years ago
Read 2 more answers
Solve x2+4x+6=0 by graphing
klemol [59]

Answer: x = -2±√2 i or no real roots. See the explanation below.

Step-by-step explanation:

If you draw the graph, you will notice that there are no common points or you can say that there are no x-intercepts.

This means that the equation doesn't have any real roots.

If there are 2 common points (2 x-intercepts) then there are 2 real roots (answers.)

If there is only one common point (vertex is on x-axis) then there is only 1 real root.

If there aren't any common points (no x-intercepts) then there are no real roots.

So first, I'm gonna convert the equation into function and convert the standard form to vertex form.

x^2+4x+6=0\\y=x^2+4x+6\\y=(x^2+4x+4)-4+6\\y=(x+2)^2+2

We notice that the vertex is at (-2,2), the graph doesn't have x-intercepts (Graph below)

So the answer is clearly complex.

If you solve this by solving the equation then it'll be.

x^2+4x+6=0\\x= \frac{-b+-\sqrt{b^2-4ac}}{2a} \\x=\frac{-4+-\sqrt{16-24} }{2}\\x=\frac{-4+-\sqrt{-8} }{2}\\\\x=\frac{-4+-2\sqrt{2}i }{2}\\\\x={-2+-1\sqrt{2}i }\\\\

The answer is complex.

However, you can find the value of x easily by graphing. For example.

x^2+6x+5=0

Factor then you get

(x+5)(x+1)=0\\x=-5,-1

Or you can convert it to vertex form then graph.

y=x^2+6x+5

y=(x^2+6x+9)-9+5\\y=(x+3)^2-4

The vertex is at (-3,-4) then graph parabola (x-intercepts determine the roots of quadratic equation. For the graph, parabola intercepts x at (-5,0) and (-1,0) that means both -5 and -1 both are the value of x.

Note:

From the standard form, y=ax^2+bx+c The graph is called Parabola, and it's Quadratic Function.

a is how the graph is, for example. If a>0, the graph is supine parabola and if a<0 then the graph is inverted parabola.

|a| is determined if the graph is wide or narrow, the more the value of a is, the more narrow it will be. The less the value of a is, the more wide it will be.

b is what determined the change of graph (likely vertex). Without b, then it'd be ax^2+k which only move y-axis and not x-axis.

c is what determined the y-intercept and y-axis. If there is no b or the value of b is 0 then the vertex is at (0,c). If there is the value of b then c is only determined the y-intercept.

4 0
3 years ago
Simplify 12 + 16 ÷ 4 · 5 - 8​
elena55 [62]

Step-by-step explanation:

12 + 16 ÷ 4 × 5 - 8

12 + 4 × 5 - 8

12 + 20 - 8

32 - 8

24

7 0
3 years ago
Read 2 more answers
A cube has a volume of 216cm/3.what is the area of the base of the cube
Anettt [7]

Answer: 36 cm^2

Step-by-step explanation:

Hello!

We can start by finding the cube root of 216, which is 6. This is the length of each side of the cube.

Now, the area of the base of the cube is equal to 6^2=36 cm^2.

7 0
3 years ago
Read 2 more answers
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