Solve 4x^2-16x-84 by factoring, completing the square and, by quadratic formula(show work, pls)

7. 16.48

8. 9

I hope this helped!

Step-by-step explanation:

pls mark brainliest

Answer:

7. 16.485 feet

8.answer is 9.42 feet but when u round off it is 9 feet.

Step-by-step explanation:

Answer:

22/85

Step-by-step explanation:

Answer:

18 and 21

Step-by-step explanation:

Answer:

Step-by-step explanation:

8 must be the hypothenuse

4 and 7 are side

check Pythagorean Th. if works is a right triangle if not is not

8²=4²+7²

64 = 16+49

64 = 65 false

the lengths do NOT form a right triangle

Answer:

Do you really mean by -9 or cause I'm just confused but if you meant by 19 then this could help. I had my mom do whatever she could put as  the answer so yeah

Step-by-step explanation:

a*b=18 ____[1]

a+b=19____[2]

[2] a=19-b ___[3]

put [3] in [1]

(19-b)*b = 18

19b-b^2 = 18

b^2-19b+18 = 0

(b-18)(b-1) = 0

so b=18 or b=1

if b=18 then a=19-18=1

if b=1 then a=19-1=18

SO two factors are 1 and 18

Answer:

11

Step-by-step explanation:

19 + w = 30

w = 11

Answer: 28/42 as a fraction simplified is 2/3

Hope this helped

Answer:

Step-by-step explanation:

Inscribed angle is half the intercepted arc measure.

Answer:

83.33%

Step-by-step explanation:

Amount she eats everyday = 150g

Amount she eats now = 25g

By what percent did Amanda decrease the amount of sugar she eats?

Percentage decrease in the amount of sugar she eats = (150 g - 25g) / 150g × 100

= 125g / 150g × 100

= 0.8333333333333 × 100

= 83.33%

Percentage decrease in the amount of sugar she eats = 83.33%

Answer:

D

Step-by-step explanation:

Answer:

Answer is D I believe

Step-by-step explanation:

shows all of the possible outcomes

Answer:

-72p^7-64p^4

Step-by-step explanation:

Answer:

Rhiannon Taylor :)

Step-by-step explanation:

I do not speak spanish and I love spicy chips!

Answer:

I would rather be never talked about. Some people are crazy and may come after me. I would rather never be talked about at all. (just my opinion)

Step-by-step explanation:

Answer:

I would be gossiped about

Step-by-step explanation: some secrets don't always remain secrets.

plus some of the secrets won't be bad

From 12 different letters, 3326400 arrangements can be made using the letters in the word CARELESSNESS.

When the order of the arrangements counts, a permutation is a mathematical approach that establishes the total number of alternative arrangements in a collection. Choosing only a few items from a collection of options in a specific sequence is a common task in arithmetic problems.

Among the 12 letters in CARELESSNESS,

there are 4 S’s, 3 E’s, and 1 each of C, A, R, L, N.

There are 12! = 479,001,600 arrangements (permutations) of the 12 letters,

most of which are identical because of repeated letters.

In order that each permutation be distinct, repeat letters have to be accounted for.

4 S’s be in 4! = 24 ways,

3 E’s, in 3! = 6 ways.

And 1! = 1 way.

Distinct permutations as requested,

thus = 12!/(3!)(4!)(1!)

       = 3326400.

Therefore, 3326400  different 12-letter arrangements can be made using the letters in the word CARELESSNESS.

To learn more about the permutation;

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Answer:

$31,119

Step-by-step explanation:

33,000/100= 330 per percent

100-5.7 = 94.3%

94.3 x 330 =  31,119

Answer: To check a solution, you can substitute the solutions into the equations and verify that both equations are true.

Step-by-step explanation:

Answer:

31.1 best answer

sorry if it's wrong

28.8%​ is the probability that a data value is between 48 and 52.

Probability is a number that expresses the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

First, we need to standardize the values and use a standard normal distribution table or calculator.

The standardized value of 48 is:

z = (48 - 48) / 5 = 0

The standardized value of 52 is:

z = (52 - 48) / 5 = 0.8

Now we need to find the probability that a data value is between z = 0 and z = 0.8 in a standard normal distribution. We can use a standard normal distribution table or calculator to find this probability.

Using the table or calculator, we can find that the probability of a data value being between z = 0 and z = 0.8 in a standard normal distribution is approximately 0.2881.

Rounding this answer to the nearest tenth of a percent, we get:

P(48 < x < 52) ≈ 28.8%

Therefore, the answer is D, 28.8%.

Learn more about probability here:

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Answer:

5 and 9

Step-by-step explanation:

3 multiplied by whatever z is plus 2 has to be 10 or more

The TRUE statements about function g are C, D, and E. as the domain is all real numbers.

A continuous function is a mathematical model that possesses the following characteristics:

Thus, the TRUE statements about function g are:

C) The function is continuous.

D) As x approaches positive infinity, approaches positive infinity.

E) The domain is all real numbers.

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Answer:

[tex]V =\frac{E}{IT}[/tex]

Step-by-step explanation:

You can isolate the "V" variable by dividing by IT on both sides:

[tex]\frac{E}{IT} =\frac{VIT}{IT}[/tex]

On the left, the IT from the top and bottom cancel, leaving you with just V:

[tex]V =\frac{E}{IT}[/tex]

==========================================================

Explanation:

He starts off with 200 cards. Then he adds on 25w more cards for each week (w). Overall, he'll have 200+25w cards

We can think of it like this:

So that's another way to see where the 25w comes from.

The expression 200+25w is the same as 25w+200. This is because we can add two numbers in any order.

------------

Since he wants to know when he'll have more than 750 cards, this means we set 25w+200 greater than 750.

That's how we get to the answer of 25w+200 > 750

Notice how there isn't a line under the inequality sign. We aren't using the "greater than or equal to" symbol here. We want to know when the cards gets over 750, but we don't want to know when it's equal to 750.

Answer:

Y^= 1.767 + 0.6294X when rounded give s Y^= 1.77 +0.63X

b= 0.6294 rounded to 0.63

a= 1.77

The predicted lines are for each X and Y

3.340,3.96, 4.914, 5.228, and 5.543

Step-by-step explanation:

The data given is

Length (m)    Speed (m/s)              Predicted Line  

2.5                  3                                    3.340  

3.5                 4.5                                  3.96

5                   4.8                                  4.914

5.5                5.2                                 5.228

6                   5.5                                 5.543

The calculations are

                 Xsquare    XY   Y     X

                 6.25    7.5  3      2.5

                 12.25 15.75 4.5      3.5

                    25 24         4.8      5

                  30.25 28.6 5.2      5.5

                   36 33           5.5      6

Total       109.75 108.85   23         22.5

The estimated regression line of Y on X is

Y^ = a +bX

and two normal equations are

∑Y = na + b∑X

∑XY= a∑X + b∑X²

Now X`= ∑X/ n= 22.5/5=4.5

Y`= ∑Y/ n= 23/5= 4.6

b= n∑XY- (∑X)(∑Y) / n∑X²- (∑X²)

Putting the values

b= 5(108.85) - (23)(22.5)/ 5(109.75)- (22.5)²

b= 544.25-517.5/ 548.75-506.25

b= 26.75 /42.5

b= 0.6294

and

a= Y`- bX~= 4.6- 0.6294(4.5)= 4.6-2.823= 1.767

Hence the

desired estimated regression line of Y on X is

Y^= 1.767 + 0.6294X

Y^= 1.77 +0.63X

The estimated regression co efficient b= 0.6294 indicates that the values of Y increase by 0.6294 units for a unit increase in X.

Answer:

33.49

Step-by-step explanation:

The equation you need to use is 4/3 * pi * r^3

4/3 * 3.14 * 2^3=33.4933333333333333333333

Answer:

4.69

Step-by-step explanation:

the distance between two points in three dimensions is equal to the sqrt((x-x1)^2+(y-y1)^2+(z-z1)^2)

So:

sqrt((2-0)^2+(3-0)^2+(3-0)^2)

= sqrt(4+9+9)

= sqrt(22)

~4.69

Answer:

The answer is 4.69

Answer:

28.26

Step-by-step explanation:

3.14 x (3x3) = 28.26