Evaluate the function
f(x) = - 2x^2 + 2x + 4
Find f(1)

Answer:

x=-1

Step-by-step explanation:

-10+11+x=0

-11         -11

-10+x=-11

+10         +10

x=-1

[tex]( \sqrt{2} + 1)(5 + \sqrt{2}) \\ = \sqrt{2} (5 + \sqrt{2} ) + 1(5 + \sqrt{2} ) \\ = 5 \sqrt{2} + 2 + 5 + \sqrt{2} \\ = 7 + 6 \sqrt{2} [/tex]

7 + 6√2

Answer:

[tex]\huge\boxed{\sf 7 + 6\sqrt{2}}[/tex]

Step-by-step explanation:

[tex](\sqrt{2} +1)(5+\sqrt{2} )\\\\= \sqrt{2} (5+\sqrt{2} )+1(5+\sqrt{2} )\\\\= 5\sqrt{2} + (\sqrt{2})^2+5+\sqrt{2} \\\\= 5\sqrt{2} + 2 + 5 + \sqrt{2} \\\\= 2+5+\sqrt{2} + 5\sqrt{2} \\\\= 7 + \sqrt{2} (1+5)\\\\= 7 + 6\sqrt{2} \\\\\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

-5/14

Step-by-step explanation:

2/7 times 2 to get the denominator to be 14 since adding and subtracting fractions require the same denominator. 2/7 times 2 = 4/14. -9/14+4/14=-5/14.

make them the same denominator

[tex] \frac{2}{7} \times \frac{2}{2} = \frac{4}{14} [/tex]

[tex] \frac{ - 9}{14} + \frac{4}{14} = \frac{ - 5}{14} [/tex]

Answer:

answer is

frghhfgyyuu67.5

Step-by-step explanation:

(a+b)×h

_______

2

= (12 + 12 ) × 26

= (24) × 26

= 624 ÷2

= 312

Answer:

Terms Are

8 , 16 , 32

5 , 10 ,  15 , 20

3 , 6 , 12

All of them are less than 50.

Step-by-step explanation:

Explanation:

We have 2 rows and 3 columns, which directly leads to the answer 2 x 3

Always list the number of rows first, followed by the number of columns.

Answer:

Its 3x2

I swear I just took the test

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Since the ratio is 3 to 10  it would have to be 3 prizes for every 10 contestants

Answer:

b

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

The solution in form of fraction is,

⇒ 8 / 15

We have to given that,

An expression to solve,

⇒ 2/9 divided by 5/12

Now, We can divide the numbers into form of fraction as,

⇒ 2/9 ÷ 5/12

⇒ 2/9 × 12/5

⇒ 24 / 45

⇒ 8 / 15

Therefore, The solution in form of fraction is,

⇒ 8 / 15

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Answer:

i think 27777777777777/100000000000000

Step-by-step explanation:

Answer:

Convert it to a whole number

Step-by-step explanation:

by multiplying it with 1000000000000

=2.78 x 10 ^ -15

Answer:

h(-4) = 32.8

h(0) = 12

h(3.5) = -6.2

Step-by-step explanation:

Answer:

highest 7/8, 0.5, -1/4, -1  1/5 lowest

Answer: i'm not certain but i think its -1 1/5 first then -1/4 next is 0.5 then 7/8

once again not certain but i think that's the answer

Answer:

-5 is the y intercept.

Step-by-step explanation:

Ok, lets do the steps in order.

1) Make a point-slope form equation.

We know that the format of it is y - y1 = slope(x - x1), so we know have to substitute our information in the equation.

y - 5 = 5(x - 2)

2) Convert our point-slope form equation into slope intercept form, and solve for the y-intercept.

y = slope(x) + b... right? So we now have to do math.

Distribute the right side of the equation to get :

y - 5 = 5x - 10

Now cancel out the -5, and then subtract on both sides.

y = 5x - 5

And -5 is your y intercept :)

Hope this helps! Mark me brainliest :)

Answer:

Given that (x-3) (Ax²+bx+c) = x³-7x-6, find the value of A, B and C

Given that (x-3) (Ax²+bx+c) = x³-7x-6, find the value of A, B and C

Answer:

22/3

Step-by-step explanation:

because it is

Answer:

C.

Step-by-step explanation:

hope this helps♡^.^^_^

Answer:

C

Step-by-step explanation:

-6 is more to the left of the number line than -3

Answer:

-1

Step-by-step explanation:

-15-2(-7)

-15+2·7

-15+14

-1

Answer:

I think It would be B lest goooooooo

Answer: a. -3a^3 - 6a^2 + 7a - 13

Step-by-step explanation:

(-8a^2 + 7a - 9) - (3a^3 - 2a^2 + 4)

-3a^3 -6a^2 + 7a - 13

Answer:

1. D

2. E

3. C

Step-by-step explanation:

f(x)=(5x³-x²-3x+9)+(3x²-x-7)-(3x³+x²-4)

f(x)=(5x³-x²-3x+9)+(3x²-x-7)+(-3x³-x²+4)

f(x)=(2x³-x²-3x+9)+(2x²-x-3)

f(x)=2x³+x²-4x+6

1. D (the degree is the largest value of an exponent)

2. E (the constant term is the number without a variable)

3. C (the leading coefficient is the coefficient of the largest variable exponent in the value)

Answer:

Many mathematical operations are reversible, meaning you can go not just from A to B, but by the same reason go from B back to A.

Example x + 4 = 7. Subtract 4 from each side to get x = 7 - 4 = 3. But you could, if you wished, go from x = 3 to x + 4 = 7 by simply doing the opposite, adding 4.

Now consider an operation that is NOT reversible.

Example: Given sqrt(x) = x - 2. Square each side to get x = (x - 2)^2 =x^2 - 4x + 4, or

x^2 - 5x + 4 = 0. Factoring gives (x - 1) (x - 4) = 0. So, IF the original equation holds for a real number x, then the only possibilities are x = 1, x = 4.

If you plug x = 4 back into original equation, you get sqrt(4) = 4 - 2, which is true. But, if you plug in x = 1, you get sqrt(1) = 1 - 2, which is NOT true, as sqrt(1) = 1, not -1. The logic of the derivation was that, IF original equation were true, then x could possibly be only 1 and/or 4. In effect, it was really telling you what x is NOT, namely any number besides 1 and 4. Once you test the two “candidates” you see that one works and the other doesn’t.

Why does this happen? It has to do with the fact that square root is only a principal branch. Just as sqrt(16) is only 4 and not -4, so we are dealing with a limited possibility with which to start. Squaring glosses over this, and when you solve a quadratic equation, it generally gives two solutions (not nec. real). Because sqrt(x) started out to be nonnegative, that created the problem at end.

Hello There!

y-y1=m(x-x1)

y-3=5(x+8)

y-3=5x+40

[tex]y=5x+43[/tex]

Hope this helps!

[tex]GraceRosalia[/tex]

Answer:

Step-by-step explanation:

let  x = number of students

Science Center will charge total of 135 + 3x

Dino Discovery Museum will charge total of 6x

for what x the Science Center charge less than the Dino Discovery museum that is

135 + 3x < 6x

135 < 6x - 3x

3x > 135

x > 135/3

x > 45

The Science Center charge less than the Dino Discovery museum for more then 45 students.

45students will the science center charge less than the dino discovery museum

What is Algebra?

One of the many branches of mathematics is algebra. Algebra, which is a common thread throughout practically all of mathematics, is broadly defined as the study of mathematical symbols and the rules for manipulating these symbols in formulas.

Suppose x is the number of Students

Total fees for Science Center will be,

135+3x.

Total fees for the Dino Discovery Museum will be 6x.

The Science Center charges a lower price than the Dino Discovery Museum for what x.

135 + 3x < 6x

135 < 6x - 3x

3x > 135

x > 135/3

x > 45

Hence, For classes with more than 45 Students, the Science Center charges less than the Dino Discovery Museum.

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Answer:

Data set: 47, 45, 44, 41, 48

1. Find the mean.

Mean = 47 + 45 + 44 + 41 + 48

5

= 225

5

= 45

2. Find each absolute deviation.

Absolute deviations: 2, 0, 1, 4, 3

What is the mean absolute deviation (MAD) for the data set?

MAD =

Step-by-step explanation:because thats it because yea

Answer:

The given relation is not a function.

Step-by-step explanation:

A relation is any set of ordered pairs, which can be thought of as (input, output).

A function is a relation in which no two ordered pairs have the same first component (x-values or input) and different second components (y-values or output).

Given the following relation: {(7, 4), (5, - 1), (3, - 8), (1, - 5), (3, 6)}

There is an input value (x = 3) that has two corresponding outputs (y-values): y = -8 and y = 6.  

Remember that a function can only take on one output for each input.

It also helps to do the Vertical Line Test, which allows us to know whether or not a graph is actually a function.  If a vertical line intersects the graph in all places at exactly one point, then the relation is a function.  To use the vertical-line test, imagine dragging a ruler held vertically across the  graph from left to right. If the graph is that of a function, the edge of the ruler would hit the graph only once for every x -value.

Attached is a screenshot of the plotted points on a graph, where I performed the Vertical Line Test. The green line is the vertical line that contains two points that made the relation invalid as a function.

Please mark my answers as the Brainliest if you find my explanation helpful :)

Answer:

[tex]\frac{2}{5}[/tex] and [tex]\frac{2}{7}[/tex]

Step-by-step explanation:

We want to work backwards. Currently we have [tex]\frac{ }{ }[/tex][tex]\frac{?}{?}[/tex] ÷ 5 = [tex]\frac{2}{25}[/tex].

If we multiply both sides by 5, we get [tex]\frac{?}{?}[/tex] = [tex]\frac{2}{25}[/tex] × [tex]\frac{5}{1}[/tex].

We can use multiplication of fractions to solve this. To multiply fractions we multiply the two numerators together and multiply the two denominators together, giving an answer of [tex]\frac{?}{?}[/tex] = [tex]\frac{10}{25}[/tex].

This can be simplified to [tex]\frac{2}{5}[/tex].

We can use the same method on the other equation to get an answer of [tex]\frac{2}{7}[/tex].

**This content involves multiplying fractions and questions with the blanks not isolated, which you may wish to practice.

Answer:

20g onions at 50 carrotsat 2tablespoon oil at 30 tomatos 1l vegtable stock