I need help with this no scam bot and link answers please

Answer:

Ahmed is incorrect.  The first thing to note is that if the value of a is 0, than it is not a quadratic function- it is a linear function.

Second thing to not is that a parabola because narrower as the value of  a increases, not decreases.  If the parabola is narrower than the parent graph, that means a has a value that is greater than 1.

Please remember to brainliets this answer.

Answer:

A

Step-by-step explanation:

First notice that the sing does not have a line under it so its an open circle then the line is pointing to right. Your Welcome

Answer:

sh 75

Step-by-step explanation:

I don't know what's the method but I hope this will help.if it isn't matching the answer in your book, you can ask me I mean you can tell me.

Answer:

See explanation

Step-by-step explanation:

Since banks use compound interest, then we write;

A = P(1 +r)^n

A = amount

P = principal

r= rate

n= time period

P = $7,500

n = 6

r = 6%

Substituting values;

A = P(1 +r)^n

A = 7,500(1 + 6/100)^6

A=$ 10,639

Interest = Amount (A) - Principal(P)

Interest = $ 10,639 - $7,500

Interest = $3139

Her final account balance after six years is $10,639

The sides of a triangle are in the ratio 1 : 2 : 4. The difference between the longest side and the shortest side is 84 cm. What is the perimeter of the triangle ?

The sides of a triangle are in the ratio 1: 2: 4. (Given)

Let the three sides of a triangle be x, 2x and 4x respectively.

So,

ATQ ,

4x - x = 84

3x = 84

x = [tex] \bf \frac{84}{3} [/tex]

[tex] \therefore [/tex] Longest side = 4x = 4 × 28 = 112 cm.

Shortest side = x = 28 cm.

And, the other side = 2x = 2 × 28 = 56 cm

Now, we have to find the perimeter of the triangle.

Hence, Perimeter of the triangle = (112 + 56 + 28) cm = 196 cm.

answer: infinitely many :)

Answer:

20 is 40% of 50

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

c = 20 *  [tex]\frac{100}{40}[/tex] = [tex]\frac{2000}{40}[/tex] = [tex]\frac{50}{1}[/tex] = 50

Answer:

272.5 m²

Step-by-step explanation:

1/2x4x9=18

(9+18)/2=13.5. 13.5x11=148.5

(18+14)/2=16. 16x7=112

12+148.5+112= 272.5

The answer is

b. two real solutions

Answer:

B.

About 16% of the books have fewer than 150 pages.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 180, standard deviation = 30.

150 pages:

150 is 180 - 30 = 1 standard deviation below the mean.

We have that approximately 68% of measures are within 1 standard deviation of the mean, so 100 - 68 = 32% are more than one standard deviation.

The normal distribution is symmetric, which means that of those 32%, 32/2 = 16% are more than 1 standard deviation below the mean, that is, below 150.

So the correct answer is given by option B.

Answer:

30 degrees,30 degrees120, degrees

Step-by-step explanation:

The ratio of the angles is 1:1:4.

Let’s represent the angles by 1x, 1x, and 4x.

The sum of the interior angles of a triangle is 180°.

1x + 1x +4x = 180    Combine like terms.

           6 x = 180    Divide each side by 6

               x = 30°

1x=1*30=30 degrees

1x=1*30=30 degrees

4x=4*30=120 desgrees

Answer:

30, 30, 120

Step-by-step explanation:

Basic properties of a triangle:

The problem:

To solve:

Answer:

Step-by-step explanation:

You see that there’re angles with 30 and 90 degrees that means that -> 180-(90+30)=60 (measurement of the third angle)

Here you’ll need to use the 30,60,90 degree triangle rule:

The opposite side of 30 degree will be y

30->y

90->2y->12√3 => y=6√3

60->y√3->x => 6√3x√3=6x3=18

To understand the rule better you can check the picture below.Wish it will help you!Good luck!

Answer:

the answer would be 40

Step-by-step explanation:

supplementary angles are 180

180-140=40

x=40

Solution :

Let

[tex]$k_1$[/tex] = number of levels for the factors 'flavors' = 4

      (4 levels vanilla, chocolate, red velvet and marbled)

The degree of freedom for the factor 'flavors' = [tex]$k_1$[/tex] - 1

                                                                            = 4 - 1

                                                                            = 3

Now defining the F test statistics for testing the significance of the factors, 'flavors' :

F test statics = [tex]$=\frac{Ms\text{ (factor falvor)}}{Ms \text{ (errors)}}$[/tex]          ,   Ms = mean square

where F = [tex]$F_{k_1-1}$[/tex], error df.

Thus the numerator degrees of the freedom for the F test statistics to determine if the factor flavor was significant is = [tex]$k_1$[/tex] - 1

                                                                            = 4 - 1

                                                                            = 3                                                                              

Answer:

$638.25

Step-by-step explanation:

I multiplied 17.25 times 37. The product was $638.25.

I was a bit confused when it said,"His overtime rate is 1 times his regular hourly rate." Since it is 1 times his hourly rate, it shouldn't affect the answer.

Your choices are all correct.

Numerator: x ² + 2x - 3 = (x + 3) (x - 1)

Denominator: x ² + 4x - 5 = (x + 5) (x - 1)

Common factor: x - 1

Then

lim [x → 3] (x ² + 2x - 3) / (x ² + 4x - 5)

= lim [x → 3] (x + 3) / (x + 5)

= (3 + 3) / (3 + 5)

= 6/8 = 3/4

Answer:

ANSWERS:

1. C

2. D

3. B

4. A

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

16 oz= 1 lb

16 oz x 5lbs = 80 oz

80 oz/ 24 oz= 3.33333333

Answer=3 when rounded down

9514 1404 393

Answer:

  12. C

  13. D

Step-by-step explanation:

12. For interest r on principal P compounded n times per year for t years, the account balance is ...

  A = P(1 +r/n)^(nt)

For P=800, r=0.05, n=365, t=6, this becomes ...

  A = 800(1 +0.05/365)^2190 . . . . matches choice C

Note: if you're familiar with the formula, you will notice choice C is the only one with 'n' in the right place.

__

13. The form of an exponential function is ...

  y = a·b^x . . . . . . . . where 'a' is the initial value, and 'b' is the growth factor

The form of the equation eliminates choices A and B.

Here, the initial value is 1.87, eliminating choice C.

Matching the problem statement to the form of the exponential function we see that the equation of choice D is appropriate.

Answer:

[tex]x + y = 1042[/tex]

[tex]1.5x + 0.75y = 1140[/tex]

Step-by-step explanation:

This question can be solved by a system of equations.

I am going to say that:

x is the number of regular fares paid.

y is the number of reduced fares paid.

1,042 total fares were paid

This means that [tex]x + y = 1042[/tex]

A city bus collected $1,140 in fares on a given day. The regular fare is $1.50, and the reduced fare is $0.75.

This means that:

[tex]1.5x + 0.75y = 1140[/tex]

System of equations:

The system of equations is:

[tex]x + y = 1042[/tex]

[tex]1.5x + 0.75y = 1140[/tex]

Step-by-step explanation:

Step 1.  Enter the data into the lists.  

For basic entry of data, see Basic Commands.

cricket1  

Step 2.  Create a scatter plot of the data.  

cricket4

Obviously, there is some scatter to this data. This variability is the norm, rather than the exception when working with biological data sets.  Real-life data seldom creates a nice straight line.

Step 3.  Choose the Linear Regression Model.

    Press STAT, arrow right to CALC, and arrow down to 4: LinReg (ax+b).  Hit ENTER.  When LinReg appears on the home screen, type the parameters L1, L2, Y1.  The Y1 will put the equation into Y= for you.  

           (Y1 comes from VARS → YVARS, #Function, Y1)

cricket6  

cricket7Older OS form.

cricket newNewer OS form.

cricket8

The linear regression equation is

y = 3.41x + 22.85

(answer to part a)

Step 4.  Graph the Linear Regression Equation from Y1.

    ZOOM #9 ZoomStat to see the graph.

cricket9

(answer to part b)

Step 5.  Is this model a "good fit"?

    The correlation coefficient, r, is .8320424586 which just barely places the correlation into the "strong" category.  (0.8 or greater is a "strong" correlation)

    The coefficient of determination, r 2, is .6922946529 which means that 70% of the total variation in y can be explained by the relationship between x and y.  The other 30% remains unexplained.

    Yes, it is somewhat of a "good fit".

        (answer to part c)

a3

Step 6.  Extrapolate:  (beyond the data set)

     If the ground temperature reached 95º, then at what approximate rate would you expect the crickets to be chirping?

Step 7.  Interpolate: (within the data set)

    With a listening device, you discovered that on a particular morning the crickets were chirping at a rate of 18 chirps per second.  What was the approximate ground temperature that morning?

 The power equation, type 18, hit ENTER, and the answer will appear at the bottom of the screen.

cricket12

(answer to part e --  the ground

the temperature will be approx. 84.23º F)

Step 8.  If the ground temperature should drop to freezing (32º F), what happens to the cricket's chirping?

a4

The TABLE tells us that at 32º F there are 2.68 chirps per second.  So, what does this really mean?  Are the crickets cold?

These findings are a bit deceiving.  At 32º F, the crickets are dead.  The lifespan of cricket in a cold climate is very short.  The crickets spend the winter as eggs laid in the soil.  These eggs hatch in late spring or early summer and tiny immature crickets called nymphs to emerge.  Nymphs develop into adults within approximately 90 days. The adults mate and lay eggs in late summer before succumbing to old age or freezing temperatures in the fall.

Answer: 26 yards

Step-by-step explanation: I have a trick i like to use. If its diameter use the number they provide if its radius divide the number by 2.

I'm not sure if it works in every case but you can try it ^^

Answer:

15.87% of the total number of cardholder would be expected to be charging 27 or more in the study.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 25 charged purchases and a standard distribution of 2

This means that [tex]\mu = 25, \sigma = 2[/tex]

Proportion above 27

1 subtracted by the pvalue of Z when X = 27. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{27 - 25}{2}[/tex]

[tex]Z = 1[/tex]

[tex]Z = 1[/tex] has a pvalue of 0.8413

1 - 0.8413 = 0.1587

Out of the total number of cardholders about how many would you expect are charging 27 or more in the study?

0.1587*100% = 15.87%

15.87% of the total number of cardholder would be expected to be charging 27 or more in the study.

Answer:

i dont know this i will try oh i think it is c i think though

Step-by-step explanation:

i dont know this i will try oh i think it is c i think though

Answer:

112 teaspoons of crushed garlic

Step-by-step explanation:

56•2=112

Answer:

The median is marked at 161cm instead of 162cm.

The right part of the box (the upper quartile) is marked at 172cm, while the interquartile range is 17cm, so the upper quartile should be at 154cm + 17cm = 171cm.

Median and higher quartile are the two changes that Aisha should do to make the box plot fully correct.

Box plot is a type of chart often used in explanatory data analysis. A graphical rendition of statistical data based on the minimum, first quartile, median, third quartile, and maximum.

For the given situation,

Least height - 142 cm

Lower quartile - 154 cm

Inter quartile range - 17 cm

Median - 162 cm

Range - 40 cm

The higher quartile can be calculated as

Higher quartile = Lower quartile + Inter quartile range

⇒ Higher quartile = [tex]154+17[/tex]

⇒ Higher quartile = [tex]171[/tex]

From the box plot shown, the values of median and higher quartile are drawn wrong.

In diagram,

Hence we can conclude that median and higher quartile are the two changes that Aisha should do to make the box plot fully correct.

Learn more about box plot here

https://brainly.com/question/12591498

#SPJ2

Answer:

Scott paid $ 1.72 per kilo for the first bag, and $ 1.85 per kilo for the second bag, with which the best buy is the first bag.

Step-by-step explanation:

Since Scott paid 10.47 for a 6.08-kg bag of dog food, while a few weeks later, he paid 13.88 for a7.48-kg bag at a different store, to find the unit price for each bag, and then state which bag is the better buy based on the unit price, the following calculation must be performed:

10.47 / 6.08 = X

1.72 = X

13.88 / 7.48 = X

1.85 = X

Thus, Scott paid $ 1.72 per kilo for the first bag, and $ 1.85 per kilo for the second bag, with which the best buy is the first bag.

Answer:

86 - 4a^2 + 7b over 7

Step-by-step explanation: