help out please !

Select all of the quadratic expressions in vertex form.
A (2+4)^2– 3
B (- 5)^2+ 2
C x^2+ 2x + 5
D x (x+2)
E (2+4)^2

Answer:

−15+43

Step-by-step explanation:

1. Add the numbers

= 3−14x−x+25+15

= 43−14−

2. Combine like terms

= 43−14x−x

= 43−15

3. Rearrange terms

= 43−15x

= −15+43

Answer:

$310

Step-by-step explanation:

Answer:

[tex]-\frac{1}{5}[/tex]

Step-by-step explanation:

→ Remember what 2 minuses make

plus

→ Rewrite the question

[tex]-\frac{3}{5} +\frac{2}{5}[/tex]

→ Solve

[tex]-\frac{1}{5}[/tex]

Answer:

Other persons brainliest

Step-by-step explanation:

Answer: 86 degree

Step-by-step explanation:

The Straight line is 180 degrees so if we minus 180 by the outward degree there will be the degree for inward degree

P: 95 degrees T: 160 degree S: 88 degrees R: 91 degree

The degree for the pentagon is 540 degrees so If I minus 540 by all the four inward degrees there will be the missing last degree

95 + 160 + 88 + 91 = 434 degree

540 - 434 = 106 degree

180 - 106 = 94 degree

So the last inward degree is 94

Finally, if I minus 180 by 94 (the way I used to find inward degree and to find outward degree for now) it equals 86 degree

so X is 86 degree

Sorry if this was too confusing:)

Answer:

1st--> x=135

2nd-->x=74

Step-by-step explanation:

1st:

triangle =180°

180-90=90

90÷2=45

straight line=180°

180-45=135

therefore x=135°

2nd:

pentagon=540°

straight line=180°

180-92=88 for line s

180-20=160 for line q

180-85=95 for line p

180-89=91 for line r

160+95+88+91=434

540-434=106

180-106=74

therefore x=74°

hope that's okay

Answer:

14 is the correct answer

Answer:

14

Step-by-step explanation:

the answer is 14 when the equation is evaluated

Answer:

1250

Step-by-step explanation:

its (a

Answer:

because h is being multipling by πr² and if we swich v for h

h going to be at front and v dividing all the acuation

Answer:

x = 70

Step-by-step explanation:

Ok first let's find the angle where there is an exterior angle:

180-120=60

Then add this and the other inside known angle and subtract that from 180 to get your answer:

60+50=110

180-110=70

Answer:

70

Step-by-step explanation:

Sum of two interior angles equals to the exterior angle.

Answer: 100 99/100

Step-by-step explanation: add the 1/2 and 1/5 together by finding a common denominator(10). 1/2 would become 5/10 and 1/5 would become 2/10. 2/10 + 5/10 =7/10. now we're left with (7/10)^2 +3/10 x 5

to do (7/10)^2 you square the top and bottom to give you 49/100.

next we'll do 3/10 x 5 which would equal 15/10. so now all we have left to do is add 49/100 and 15/10. to do this we'll find a common denominator of 100. so well multiply the top and bottom by 10 to give you 150/100.

finally, 49/100 + 150/100 = 199/100 or as a mixed number, 100 99/100

Answer:

1[tex]\frac{99}{100}[/tex]

Step-by-step explanation:

I would start by turning the parentheses fractions into one fraction.

You could do binomial multiplication and get [tex]a^{2} +2ab+b^{2}[/tex] but it might take longer.

So I would just turn them into one fraction by finding the common denominator.

The common denominator here is 10

[tex]\frac{1}{5} (\frac{2}{2} )=\frac{2}{10}[/tex]

[tex]\frac{1}{2} (\frac{5}{5} )=\frac{5}{10}[/tex]

Now add

[tex]\frac{2}{10} +\frac{5}{10} =\frac{7}{10}[/tex]

Now apply: [tex](\frac{a}{b} )^{2} =\frac{a^{2} }{b^{2} }[/tex]

[tex](\frac{7}{10} )^{2} =\frac{7^{2} }{10^{2} } =\frac{49}{100}[/tex]

Now, multiplying the other fraction we get [tex]\frac{3}{10} (5)=\frac{15}{10}[/tex]

Now turn this into a fraction with denominator 100 to add the two fractions

[tex]\frac{15}{10} (\frac{10}{10} )=\frac{150}{100}[/tex]

[tex]\frac{49}{100} +\frac{150}{100} =\frac{199}{100} =1\frac{99}{100}[/tex]

There is also another method to add or subtract fractions without multiplying to get a common denominator in case you are interested:

[tex]\frac{a}{b}[/tex]±[tex]\frac{c}{d}[/tex]=[tex]\frac{ad+bc}{bd}[/tex]

Answer:

Lesser: -6

Greater: 6

Step-by-step explanation:

h(x) = -5x^2 + 180

-5(x^2 - 36)

-5(x+6)(x-6)

x = -6, 6

Answer:

The correct choice is option a. (3x + 1)(2x + 5)

Step-by-step explanation:

6x^2 + 17x + 5

= 6x^2 + 15x + 2x + 5

= 3x(2x + 5) + 2x + 5

= (3x + 1)(2x + 5)

Answer:

a. (3x+1)(2x+5)

Step-by-step explanation:

6x^2 + 17x + 5

6 = 3x times 2x and 5 = 1 times 5

(3x + 1) (2x + 5)

Answer:

When you reflect a point across the x-axis, the x-coordinate remains the same, but the y-coordinate is transformed into its opposite (its sign is changed). If you forget the rules for reflections when graphing, simply fold your paper along the x-axis (the line of reflection)

Answer:

genius confirmed?? O.o

Step-by-step explanation:

Manz is too goated on da stix

Answer:

X=22° ; Exterior Angle = 125°

Step-by-step explanation:

The exterior angle theorem states that the exterior angle of a triangle is equal to the sum of the two opposite interior angles.

(2x) + (103 - x) = (6x - 7)

103 + 7 = 6x - 2x + x

110 = 5x -->(Divided by 5)--> x=22°

6(22) - 7 = 125°

The maximum or minimum of a quadratic function is found evaluating the polynomial at [tex]x = -\frac{b}{2\cdot a}[/tex].

A quadratic function is an algebraic function of the form:

[tex]y = a\cdot x^{2}+b\cdot x + c[/tex], [tex]\forall \,x, y, a, b, c\,\in \mathbb{R}[/tex] (1)

Where:

The maximum/minimum of a quadratic function is represented graphically by the vertex, which is the only point that has no a "twin" point by any means of symmetry. We can get the x-coordinate of the vertex by means of the quadratic formula:

[tex]a\cdot x^{2} + b\cdot x + (c- y) = 0[/tex] (2)

[tex]x = \frac{-b\pm \sqrt{b^{2}-4\cdot a\cdot (c-y)}}{2\cdot a}[/tex], where [tex]b^{2}-4\cdot a\cdot (c-y) = 0[/tex].

Hence, the x-coordinate of the vertex is:

[tex]x = -\frac{b}{2\cdot a}[/tex] (3)

And the y-coordinate of the vertex is determined by evaluating (1) at (3):

[tex]y = f\left(-\frac{b}{2\cdot a} \right)[/tex] (4)

The maximum or minimum of a quadratic function is found evaluating the polynomial at [tex]x = -\frac{b}{2\cdot a}[/tex].

We kindly invite to check this question on maxima and minima: https://brainly.com/question/12870574

Answer: 90

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

Answer:

9 and 13/15 or 148/15

Step-by-step explanation:

Hope this helps!

Time = Rate ÷ Distance

        = 140.9649 mph ÷ 500 miles

        =  0.28 hours

Answer:

2+2-5=6 is false.

Step-by-step explanation:

2+2 = 4

4-5 = -1

-1 does not equal 6, so the equation is false.

Also, I like Stranger Things, but my advice to you is to not try to meet people on brainly like this because 1 you can get banned, and 2 you have no idea who you might be talking to or if they're dangerous or not.

Answer:

the person who are not in mannered

they like strangers things.

For examples

one person who are well mannered they all know what we can do or what we cannot do.

Answer:

C

Step-by-step explanation:

7 5/6 is 7.833333333333333333333

Answer:

It would be 5:8

Step-by-step explanation:

Answer:

402$

Step-by-step explanation:

9514 1404 393

Answer:

  b) x < -4

Step-by-step explanation:

Eliminate parentheses and you have ...

  4x +4 > 16 +7x

  -12 > 3x . . . . . . . . subtract 4x+16

  -4 > x . . . . . . . . divide by 3

The number line will have an open circle at -4 and be shaded to the left. The pictures are a bit fuzzy, but we think choice B has that description.

Answer:

N=3

Step-by-step explanation:

When we divide we substract the powers when we multiply we add up the powers of the same number.

Answer:

n = 3

Step-by-step explanation:

[tex]▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ { \huge \mathfrak{Answer}}▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ [/tex]

The first graph represents a non - linear function, because rate of change (slope) is not constant.

The second graph represents a linear function since, it has a constant rate of change (slope)

Answer:

-2.5 :3

Degrees Farenheit!

Step-by-step explanation:

k12

hope this helped!

Please give me the crown.

~Happy Helper~

Based on the temperature change and the amount of time it did so, the average change in temperature per hour is -3.5°F.

The average change in temperature per hour can be found by:

= Temperature change / Number of hours

Solving would give:

= -23.8 / 6.8

= -3.5°F

We can therefore conclude that in every hour of this cold day, the temperature changed by an average of -3.5°F.

Find out more at https://brainly.com/question/17569569.

Answer:

It's associative property because they essentially mean the same thing, with the same signs and numbers and all, except the numbers are in different places.

Step-by-step explanation:

Hope this makes sense :)