For the equation y = 6x2 − 9x + 22, choose the correct application of the quadratic formula. (5 points)

Select one:
a. x equals negative six plus or minus the square root of six squared minus four times negative nine times twenty-two, all divided by two times negative nine
b. x equals six plus or minus the square root of six squared minus four times negative nine times twenty-two, all divided by two times negative nine
c. x equals negative nine plus or minus the square root of negative nine squared minus four times six times twenty-two, all divided by two times six
d. x equals nine plus or minus the square root of negative nine squared minus four times six times twenty-two, all divided by two times six

In the test score of Mr. Singh student, the measure of mean best represent the test data. The value of mean and median is 69.5 and 89.5 respectively.

The mean of the data is the average value of the given data. The mean of the data is the ratio of sum of all the values of data to the total number of values of data.

The median of the data is the middle value of the data set when it arrange in ascending or descending order.

Test score of Mr. Singh's student are,

Scores: 89, 99, 80, 5, 90, 0, 100, 95

\(\overline X=\dfrac{89+99+80+5+90+0+100+95}{6}\\\overline X=69.75\)

Thus the mean of the test score is 69.75.

Arrange the test score in ascending order as,

Score; 0,  5, 80, 89, 90, 95,  99, 100

In the above arranged data, we have two middle values as, 89 and 90. Thus the median of the test score is,

\(m=\dfrac{89+90}{2}\\m=89.5\)

Thus the median of the test score is 89.5.

The data is not skewed for the test score. Thus the mean value of center tenancy represent best the test data.

Thus, In the test score of Mr. Singh student, the measure of mean best represent the test data. The value of mean and median is 69.5 and 89.5 respectively.

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Answer:

The Median should be 89.5

And the mean should be 69.75

Step-by-step explanation:

I hope that helped

Answer:

The total volume is 62.5.-

Step-by-step explanation:

Giving the following information:

The equation below shows the total volume (V), in cubic units, of 4 identical boxes with each side equal to "s" units:

V = 4*(s^3)

Now, the total volume if s=2.5:

V= 4*(2.5^3)

V= 4*15.625

V= 62.5

The total volume is 62.5.-

Answer:

30 square units

Step-by-step explanation:

4 x 2.5 units= 10.

take the 3 from the V, (4s³).

Multiply that.

4 x 2.5 square units = 10

10 x ³ = 30 square units In total.

PS, Brainly has said answers were correct when they are actually wrong before, but it is also possible i am not correct. so Its up to you. :)

The first digit must be 1. The remaining seven ones must be either 0 or 1.

Therefore, there can be formed \(2^7=128\) different numbers.

Answer:

Step-by-step explanation:

he equation for the total cost (C) of the electrician's services in terms of time spent (t) is:

C = 75t + 50

where 75t represents the hourly rate charged by the electrician, and 50 is the fixed fee charged for every house call.

Answer:

50c+75t

Step-by-step explanation:

50/call +75/hr

Answer: moderate, C, B

Step-by-step explanation:

A)  A shows a moderate negative correlation.  It is moderate because the scattered points are sort of close to the line so it has moderate/medium correlation.  It is also negative because it has a negative slope

B) C shows the strongest correlation because the points around the line are tight and close.

C)  B should not have been drawn.  The  correlation is very weak.  You do know where the line should be because the points are all over the place.

Answer:

see picture... In simpler terms, take each point and count Ys down to the line (P=1) (don't count the line) then count that many down from the line.
Works the same with vertical lines except do Xs not Ys.

Step-by-step explanation: given P=1... orange line is the origin, don't forget to count it

coordinates of old shape

red (-2,7)

green (-6,8)

Blue (-6,6)

Black (-4,4)

NEW SHAPE

red (-2,-4)

green (-6,-5)

blue (-6,-3)

black (-4,-1)

Answer:Function modelling - It is based on the  variables like Quadratic expression, rational numbers as the setting of function depends the function modelling performs .Thus the option to the above ques is 16$

Step-by-step explanation: hope this helps!!! :)

The statement "90% of dentists recommend sugarless gum for their patients who chew gum" is a conditional probability statement.

A conditional probability statement expresses the likelihood of an event (in this case, dentists recommending sugarless gum) given that a specific condition is satisfied (patients who chew gum). The statement indicates that among the dentists surveyed, 90% of them recommend sugarless gum specifically for patients who chew gum.

In this case, the condition is that the patients chew gum. The probability of dentists recommending sugarless gum is stated to be 90% under this condition. It implies that if a patient chews gum, there is a 90% chance that their dentist would recommend sugarless gum.

Conditional probability statements are useful in understanding the likelihood of events based on certain conditions or circumstances. They allow us to assess the probability of an outcome given that a specific condition is met, providing valuable information in various fields, including healthcare and decision-making.

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Answer:

the answer is 15

i am positive

you have to use the pythageran therom

Answer:

\(z = \frac{47}{7} = 6 \frac{5}{7} \)

Step-by-step explanation:

\(7 = \frac{40}{z - 1} \\ 7(z - 1) = 40 \\ 7z - 7 = 40 \\ 7z = 40 + 7 \\ 7z = 47 \\\)

\(\boxed{\bold{Answer:{\boxed{\green{\bold{z = \frac{47}{7} = 6 \frac{5}{7}}}}}}} \)

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★ . ꜝꜞ ᳝ ࣪ hope that helped!  ʬʬ

Answer:

z = 5

Step-by-step explanation:

7=40/z-1

- Add 1 to both sides.

8 = 40/z

- Multiply z to both sides.

8(z) = 40/z (z)

8z = 40

z = 5

Answer:

he can buy 4 sheets of paper to print 16 pages

he will have 0.10 cents left

Step-by-step explanation:

With each piece of paper, he can print 4 pages

He has a full dollar

1/0.25 = 4

he can print 4 pages because the last 10 cents will not be enough to print another page

4 * 4 = 16

He will not be able to print all the pages

Answer:

sure

Step-by-step explanation:

The 95% confidence interval for the proportion of all Californians who considered moving out of state is (0.504, 0.530). We can be 95% confident that the true proportion of all Californians who considered moving out of state lies between 50.4% and 53.0%.

The UC Berkeley Institute of Governmental Studies conducted a poll in 2019 with 4,527 respondents in California, where 51.7% of them reported considering moving out of the state. The objective is to calculate a 95% confidence interval for the proportion of all Californians who considered moving out of state, given the sample size and proportion.

B. The formula to calculate the confidence interval for a proportion is:

CI = p^ ± z* √[(p^(1-p^))/n]

Where p^ is the sample proportion, n is the sample size, and z* is the critical value of the standard normal distribution for the desired confidence level. For a 95% confidence level, z* = 1.96.

Substituting the given values into the formula, we get:

CI = 0.517 ± 1.96 * √[(0.517*(1-0.517))/4527]

CI = 0.517 ± 0.013

The 95% confidence interval for the proportion of all Californians who considered moving out of state is (0.504, 0.530). Therefore, we can be 95% confident that the true proportion of all Californians who considered moving out of state lies between 50.4% and 53.0%.

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Answer:

2 Pi

Step-by-step explanation:

Notice that the shape is made of:

● 1 square with a side of 1 meter length

● 4 half-circles wich means 2 cicles with a diameter lf 1 meter.

■■■■■■■■■■■■■■■■■■■■■■■■■■

The square is inside so it isn't necessary to calculate the perimeter.

The perimeter of a circle is:

P' = d × Pi

We have 4 half-squares wich means two circles

So the total perimeter is:

● P = 2×P'

● P = 2 × d × Pi

● P = 2 × 1 × Pi

● P = 2Pi

heres a trick

to find 25 - 35, multiply the result of subtracting 25 from 35 by -1

35 - 25 = 10

25 - 35 = -1(10)

= -10

Answer:

the answer is -10

Step-by-step explanation:

Based on the given information, we have the function f(x) = x + 3, ε = 0.2, x₁ = 2, and L = 5. We need to find a positive value δ such that for all x satisfying 0 < |x - x₁| < 6, we have |f(x) - L| < ε.

Let's consider the distance between f(x) and L:

|f(x) - L| = |(x + 3) - 5| = |x - 2|

To ensure that |f(x) - L| < ε, we need to choose a value of δ such that |x - 2| < ε.

Substituting ε = 0.2 into the inequality, we have:

|x - 2| < 0.2

To find the maximum value of δ that satisfies this inequality, we choose δ = 0.2.

Therefore, for all x satisfying 0 < |x - 2| < 0.2, we can guarantee that |f(x) - L| < ε = 0.2.

In summary, the value of δ that satisfies the given conditions is δ = 0.2.

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Considering the definition of perpendicular line, the equation of the perpendicular line is y= -1/2x +5.

A linear equation o line can be expressed in the form y = mx + b

where

Perpendicular lines are lines that intersect at right angles or 90° angles. If you multiply the slopes of two perpendicular lines, you get –1.

In this case, the line is 2x-y=-4. Expressed in the form y = mx + b, you get:

-y= -4-2x

y= 4+2x

where:

If you multiply the slopes of two perpendicular lines, you get –1. So:

2× slope perpendicular line= -1

slope perpendicular line= (-1)÷ 2

slope perpendicular line= -1/2

The line passes through the point (2, 4). Replacing in the expression y=mx +b:

4= -1/2× 2 + b

4= -1 + b

4+1 = b

5= b

Finally, the equation of the perpendicular line is y= -1/2x +5.

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Both of these are correct. When multiplying 32 and 8, we should follow these steps:

So, the correct answer is 256.

Here is the multiplication shown step-by-step:

 32
   8

 16 --> drop down 6 and carry the 1

1
32
   8

   6

24-   --> drop down the 4 and add 1; carry the 2

 56

2

 32
    8

   6

 5 -

2 - - --> drop down the 2 since no more digits available to multiply

256 --> the answer

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Answer:

The answer is "\(2^3 \times 3^2 \times 5 \times 7\\\\\)"

Step-by-step explanation:

Given:

2520

Prime factor=?

Prime factor of 2520 is:

\(= 2 \times 2 \times 2\times 3\times 3 \times 5 \times 7\\\\= 2^3 \times 3^2 \times 5 \times 7\\\\\)

The probability that Steve will get a nine on the next card he is dealt is 4/47.  Steve and Cathy are playing a card game with a standard deck of 52 playing cards. After Cathy is dealt an ace and a four and Steve is dealt a jack, there are 49 cards left in the deck. Out of the remaining cards, there are three aces.

If Steve gets an ace on the next card he is dealt, he will win. The probability of this happening is 3/49, as there are three aces left in the deck out of a total of 49 cards remaining.

After Steve gets a two and Cathy gets a five, there are now 47 cards left in the deck. The probability of Steve getting a nine on the next card he is dealt is 4/47, as there are four nines left in the deck out of a total of 47 cards remaining.

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Answer:

9.9km

Step-by-step explanation:

11m times 60 seconds 660 m a minute 660m times 15 minutes 9900m per15 min 9900m divideded by 1000 9.9 km

there are 1000 meters in a kilometer

Answer:

4 1/4 and 4 3/4

Step-by-step explanation:

its adding 2/4 each time

Answer:

4.25 and 4.75

Step-by-step explanation:

just add 0.50

Answer:

D is congruent

Step-by-step explanation:

congruent means the same shape

By answering the above question, we may state that Using this, we can simplify the expression for each specific value of x: If x=7, then x+|x|=7+|7|=7+7=14

In mathematics, you can multiply, divide, add, or take away. The following is how an expression is put together: Numeric value, expression, and math operator The elements of a mathematical expression include numbers, parameters, and functions. It is feasible to use contrasting words and expressions. Any mathematical statement containing variables, numbers, and a mathematical action between them is known as an expression, often known as an algebraic expression. As an example, the expression 4m + 5 is composed of the expressions 4m and 5, as well as the variable m from the above equation, which are all separated by the mathematical symbol +.

If x≥0, then |x|=x, so x+|x|=x+x=2x. Therefore, the simplified expression is 2x.

Using this, we can simplify the expression for each specific value of x:

If x=7, then x+|x|=7+|7|=7+7=14

If x=10, then x+|x|=10+|10|=10+10=20

If x=0, then x+|x|=0+|0|=0+0=0

If x=−3, then x+|x|=−3+|−3|=−3+3=0

If x=−8, then x+|x|=−8+|−8|=−8+8=0

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A confusion interval of 99 percent between  -0.020 and 0.120 for the difference in the true percentage of the population that say "Yes".

What does confidence interval mean?

If you repeat your experiment or resample the population in the same manner, the confidence interval is the range of values you expect your estimate to fall within a specific proportion of the time.

In point a:

The confidence interval will not provide convincing proof that only the two population prolongations differentiate because a 99 percent confidence interval for both the difference throughout the true promotion around -0.020 and 0.120 is included 0.

In point b:

This confidence interval gives strong evidence also that two population proportions were identical because there is a confusion interval of 99 percent between  -0.020 and 0.120 for the difference in the true percentage of the population that say "Yes".

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The complete question is -

A CBS News poll asked 606 randomly selected women and 442 randomly selected men, "Do you think putting a special tax on junk food would encourage more people to lose weight?" 170 of the women and 102 of the men said "Yes." A 99% confidence interval for the difference (Women – Men) in the true proportion of people in each population who would say "Yes" is –0.020 to 0.120.

a. Does the confidence interval provide convincing evidence that the two population proportions are different? Explain your answer.

b. Does the confidence interval provide convincing evidence that the two population proportions are equal? Explain your answer.

Answer:

a 40, aka a failing grade ( do ur test :) )

Step-by-step explanation:

Answer:

6500 = 575- 250 = 325

if 5% equals 325 we need to know what 100% is so 100/5 = 20

so 20 × 325 =6500

Answer:

( −4,2)

Step-by-step explanation:

Use the midpoint formula to find the midpoint of the line segment.