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2 years ago

Help me asap plz ..........

Mathematics

1 answer:

Andreas93 [3]2 years ago

7 0

Answer:

See below

Step-by-step explanation:

Domain: All real numbers
Range: [ - 4, + oo )
Max: + oo
Min: -4
Shape: Parabola
Is it a function: Yes, quadratic
Continues or Discrete: Continuous
Intervals of increase: [-1, + oo )
Intervals of decreasing: (- oo, -1]
Line of symmetry: x= -1
Endpoints, yes or no: No
X-intercepts: (-3,0), (1, 0)
Y-intercept: (0, -3)
Opens up/down: Up

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8x^2+5=22x Need help learning factoring please put work so I can understand

sp2606 [1]

Answer: (2x - 5) • (4x - 1)

STEP 1 : Equation at the end of step 1

(23x2 - 22x) + 5

STEP 2 : Trying to factor by splitting the middle term

2.1 Factoring 8x2-22x+5

The first term is, 8x2 its coefficient is 8 .

The middle term is, -22x its coefficient is -22 .

The last term, "the constant", is +5

Step-1 : Multiply the coefficient of the first term by the constant 8 • 5 = 40

Step-2 : Find two factors of 40 whose sum equals the coefficient of the middle term, which is -22 .

-40 + -1 = -41

-20 + -2 = -22 That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -20 and -2

8x2 - 20x - 2x - 5

Step-4 : Add up the first 2 terms, pulling out like factors :

4x • (2x-5)

Add up the last 2 terms, pulling out common factors :

1 • (2x-5)

Step-5 : Add up the four terms of step 4 :

(4x-1) • (2x-5)

Which is the desired factorization

Final result : (2x - 5) • (4x - 1)

5 0

3 years ago

Which explains how you round 212.809 to the nearest hundredth?

Vsevolod [243]

Answer:

Step-by-step explanation:

7 0

2 years ago

For the function F defined by F(x) = x2 – 2x + 4, find F(b+3).

Ivanshal [37]

Answer:

$\displaystyle F(b + 3) = b^2 + 4b + 7$

Step-by-step explanation:

We are given the function:

$\displaystlye F(x) = x^2 - 2x + 4$

And we want to find F(b + 3).

We can substitute:

$\displaystyle F(b + 3) = (b + 3)^2 - 2(b+3) + 4$

Expand:

$\displaystyle = (b^2 + 6b + 9) + (-2b -6) + 4$

Rearrange:

$\displaystyle = (b^2) + (6b-2b) + (9 - 6 + 4)$

Combine like terms. Hence:

$\displaystyle = b^2 +4b + 7$

In conclusion:

$\displaystyle F(b + 3) = b^2 + 4b + 7$

6 0

3 years ago

Find the slope of the line containing the points (4, -7) and (6,-8).

masha68 [24]

-1/2 ans. Hope it helps..

6 0

2 years ago

Melina graphed a line which passes through the points (-4, 2) and (6, 8). What is the slope of the line?

Ulleksa [173]

Answer:

The answer is

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

$m = \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\$

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(-4, 2) and (6, 8)

The slope is

$m = \frac{8 - 2}{6 + 4} = \frac{6}{10} = \frac{3}{5} \\$

We have the final answer as

$\frac{3}{5} \\$

Hope this helps you

7 0

3 years ago