please help me

20. Multiply: 2x (3x^2 - 5x - 3)

21. Divide: 14m^1 - 28m^8 ÷ 7m/ 7m

9514 1404 393

Answer:

  maximum: 8; no minimum

Step-by-step explanation:

A graph can be useful. I find a graphing calculator handy. It shows the maximum of the function is f(-1) = 8. Since the parabola goes to -∞ for large values of x, there is no minimum.

  maximum: 8

__

You can also find the maximum by putting the function in vertex form.

  -3(x^2 +2x) +5 . . . . factor the leading coefficient from the x terms

 -3(x^2 +2x +1) +5 -(-3)(1) . . . . add the square of half the x-coefficient, subtract the equivalent amount

  -3(x +1)^2 +8 . . . . . . the vertex form of the expression for f(x)

This form is ...

  a(x -h)^2 +k . . . . . with a=-3, h=-1, k=8

so the vertex is (h, k) = (-1, 8) -- the same as shown on the graph. The negative value of 'a' tells you the parabola opens downward, so the vertex is the maximum. The maximum is 8 at x = -1.

Answer:

C

Step-by-step explanation:

Key skills needed: Understanding inequalities, Understanding variables

1) The inequality is [tex]120\geq 12x + 29[/tex]

2) This means that 12x + 29 is at most 120, not at least. At least means greater than or equal to. At most means less than or equal to.

3) 29 is the initial amount -->  So C is the answer. C says that 29 is the initial amount, and 12 coins are being added every year (k is the number of years). C  also says "AT MOST".

Therefore C is the answer

Hope you understood and have a nice day!! :D

Answer:

If I could rearrange the alphabet, I’d put ‘U’ and ‘I’ together

Step-by-step explanation:

Answer:

[tex]\displaystyle Corresponding\:Angles; 40 = x[/tex]

Step-by-step explanation:

Corresponding Angles are congruent, therefore you set both angle measures equal to each other:

[tex]\displaystyle 135° = [3x + 15]° → 120 = 3x; 40 = x[/tex]

I am joyous to assist you at any time.

Hey there!

The answer to your question is [tex]x = 40[/tex]

These are two parallel lines cut by a transversal, which means that they are corresponding angles and, therefore, [tex](3x + 15)[/tex] is equal to [tex]135[/tex]°:

[tex]3x + 15 = 135[/tex]    

Subtract [tex]15[/tex] from both sides:

[tex]3x = 120[/tex]

Divide both sides by [tex]3[/tex]:

[tex]x = 40[/tex]

Have a terrificly amazing day!

Answer:

48

Step-by-step explanation:

Can I get brainlyest I’m one away from expert

Answer:

5x+55=100

Step-by-step explanation:

Answer:

x+133= 130

maybe

Step-by-step explanation:

Answer:

c = t + 0.5t

c = (1 + 0.5)t

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

Let's simplify each term.

[tex](\frac{1}{4})^{2} = 0.0625[/tex]

[tex]4^{3} =64[/tex]

[tex](4-1) = 3[/tex]

Now we multiply:

[tex]0.0625*64*3 = 12[/tex]

Hope this helps!

Answer:

9

Step-by-step explanation:1/4 *2= 1/4*2/1=2/8

2/8*(4 to the 3ed power)*(4-1)

4 to the 3ed power= 12

2/8*12*(4-1)

4-1=3

2/8*12*3=

2/8*12=24/8

24/8*3= 24/8*3/1=72/8 divied by 6=1 1/2

hope this helps... i think its right

Answer:Nie wydaje mi się, żeby było mi przykro, stary też spróbuj użyć tłumacza i uczyń go angielskim, aby więcej osób mogło ci pomóc

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

Answer:B

Step-by-step explanation:it's obvious

Answer:

The mean will be the best instrument to measure Royston's performance

Step-by-step explanation:

hope this helps

Answer:

 [tex]^{15} C_{5} = 3,003 \\[/tex]

Step-by-step explanation:

here , we want to evaluate the value of 15 combination 5

Mathematically, we have the general combination formula as follows;

[tex]{n} C^{r} =\frac{n!}{(n-r)!r!}[/tex]

In this case , n is 15 and r is 5

Thus , we have it that;

[tex]^{15} C_{5} = \frac{15!}{(15-5)!5!} \\= \frac{15!}{10!5!} =\frac{15x14x13x12x11x10!}{10!5!} \\=\frac{15x14x13x12x11}{5!} \\\frac{15x14x13x12x11}{5x4x3x2xx1}=3,003\\[/tex]

PLEASE MARK ME AS BRAINLIEST

After evaluating, we get [tex]^{15} C_{5}=3003[/tex]

The combination of selecting r object from n object is given as,

                    [tex]^{n} C_{r}=\frac{n!}{r!(n-r)!}[/tex]

We have to find [tex]^{15} C_{5}[/tex].

         [tex]^{15} C_{5}=\frac{15!}{5!*10!} \\\\^{15} C_{5}=\frac{15*14*13*12*11*10!}{(5*4*3*2*1)*(10!)} \\\\^{15} C_{5}==\frac{360360}{120} \\\\^{15} C_{5}=3003[/tex]

Learn more about the Permutation and combination here:

https://brainly.com/question/11732255

3^3-2(3)

=3^3-6

=27-6

=21

So, ans is option 1

Answer: 21

Step-by-step explanation:

3^3 − 2 ⋅ 3  

Simplify each term.

Raise 3 to the power of 3.

   27 − 2 ⋅ 3

Multiply −2 by 3.

   27 − 6

Subtract 6 from 27.

   21

Answer:

The second one

Step-by-step explanation:

Answer:

Simplify  

58 /35

(Decimal: 1.657143)

Step-by-step explanation:

Answer:

Proof below

Step-by-step explanation:

Algebraic Manipulation

It refers to the process of modifying algebraic expressions, often into a simpler form or more easily handled and dealt with.

It also helps us to prove some identities.

We are given the relations:

a + m = n

n = 4a

Substituting the last equation in the first, we have:

a + m = 4a

Subtracting a on both sides of the equation:

m = 4a - a

Simplifying:

m = 3a

Hence proved

Answer:

Below

Step-by-step explanation:

Algebraic Manipulation

It refers to the process of modifying algebraic expressions, often into a simpler form or more easily handled and dealt with.

It also helps us to prove some identities.

We are given the relations:

a + m = n

n = 4a

Substituting the last equation in the first, we have:

a + m = 4a

Subtracting a on both sides of the equation:

m = 4a - a

Simplifying:

m = 3a

Hence prove

Answer:

Constant of proportionality is the ratio between two quantities. Y and x have to be proportional to each other.

Step-by-step explanation:

This would be represented as k=y/x

Answer:

what's the question.. I'll help

Answer:

VW= 31

WX=19

YW=36.36

ZX=18.18

VX=36.36

Answer:

I don't think it's any of them, is it supposed to add up to 180? If so 100 + 64 obviously equals 164, and 164 -180 equals 16 but there's no 16 as an answer choice

Answer:

its hard to understand sorry

Answer:

7.89

Step-by-step explanation:

Answer:

the answer is 7.89

Step-by-step explanation:

39.45/5

7.89

Answer:

y= 1 and X=4

Step-by-step explanation:

8x +7y =39

8x +2y =34

elimination method(we multiply 8x+7y=39 or 8x + 2y= 34 by -1 to eliminate 8x)

lets multiply 8x+7y = 39 by - 1

-8x -7y = -39

8x +2y = 34

(8x-8x)+(2y-7y)= (-39+34)

0 + (-5y) = -5

-5y= -5......dividing both sides by -5

y = 1

8x +2y =34....... substituting y by 1

8x +2(1)= 34

8x + 2= 34

8x = 34-2

8x = 32.....dividing both sides by 8

x = 4

Lets check;

8x +2y = 34

8(4) +2(1) = 34

32 + 2 =34

34 = 34

8x + 7y = 39

8(4) + 7(1) = 39

32 + 7 =39

39 = 39

Answer: The answer is A hope it helps.

Step-by-step explanation:

Answer:

9(4 + x)

Step-by-step explanation:

the product of 9

9 *

the sum of a number (x) and four

x + 4

the product of 9 and the sum of a number and four

9 * (x + 4)

Answer:

It will take you 1 hour to walk 1.5 miles.

Step-by-step explanation:

Answer:

634

Step-by-step explanation:

add the two 60's together, you get 120, then ad the 7's you get 14, 120+14=134 and 134+500=634 hope this helped :D