What’s the correct answer for this?

Answer:

a?

Step-by-step explanation:

Answer:

75

Step-by-step explanation:

first, there are three 5's on the spinner, with a total of 12 sections. 3/12 = 0.25, so you multiply 0.25 times 300 (the total spins) and get 75

Answer:

The answer is C

Answer:

a) Z = 2.86

b) Z = 2

Step-by-step explanation:

Z-score:

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

[tex]\mu = 23000, \sigma = 3500[/tex]

a. What is a Z score for a car with a price of $33,000?

This is Z when X = 33000. So

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

[tex]Z = \frac{33000 - 23000}{3500}[/tex]

[tex]Z = 2.86[/tex]

b. What is a Z score for a car with a price of $30,000?

This is Z when X = 30000. So

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

[tex]Z = \frac{30000 - 23000}{3500}[/tex]

[tex]Z = 2[/tex]

Answer:

Step-by-step explanation:

[tex]\mathrm{Slope-Intercept\:form\:of}\:2x+3y=12:\quad y=-\frac{2}{3}x+4\\\mathrm{Domain\:of\:}\:-\frac{2}{3}x+4\::\quad \begin{bmatrix}\mathrm{Solution:}\:&\:-\infty \:<x<\infty \\ \:\mathrm{Interval\:Notation:}&\:\left(-\infty \:,\:\infty \:\right)\end{bmatrix}\\\mathrm{Range\:of\:}-\frac{2}{3}x+4:\quad \begin{bmatrix}\mathrm{Solution:}\:&\:-\infty \:<f\left(x\right)<\infty \\ \:\mathrm{Interval\:Notation:}&\:\left(-\infty \:,\:\infty \:\right)\end{bmatrix}[/tex]

[tex]\mathrm{Parity\:of}\:-\frac{2}{3}x+4:\quad \mathrm{Neither\:even\:nor\:odd}\\\mathrm{Axis\:interception\:points\:of}\:-\frac{2}{3}x+4:\quad \mathrm{X\:Intercepts}:\:\left(6,\:0\right),\:\mathrm{Y\:Intercepts}:\:\left(0,\:4\right)\\\mathrm{Inverse\:of}\:-\frac{2}{3}x+4:\quad -\frac{3x-12}{2}\\\mathrm{Slope\:of\:}-\frac{2}{3}x+4:\quad m=-\frac{2}{3}[/tex]

Step-by-step explanation:

Area=Length×width

=6 5/7×7 3/5

change the improper fraction to proper

=47/7 ×38/5

=1786/35

=51.03ft²

Answer:

50 cars and 25 bikes

Step-by-step explanation:

Given

Total wheels = 250

Required:

Number of cars and bikes

Let C represent Cars and B represents Bike

A car has 4 wheels and a bike has 2 wheels;

So,

[tex]4C + 2B = 250[/tex]

Divide through by 2

[tex]\frac{4C + 2B}{2} = \frac{250}{2}[/tex]

[tex]2C + B = 125[/tex] ---- Equation 1

The ratio of wheels of cars to wheels of bike is 1:2

Meaning that

1C = 2B

So, C = 2B

Substitute 2B for C in equation 1

[tex]2(2B) + B = 125[/tex]

[tex]4B + B = 125[/tex]

[tex]5B = 125[/tex]

Divide both sides by 5

[tex]\frac{5B}{5} = \frac{125}{5}[/tex]

[tex]B = \frac{125}{5}[/tex]

[tex]B = 25[/tex]

Recall that C = 2B

So,

[tex]C = 2 * 25[/tex]

[tex]C = 50[/tex]

Hence, Anna has seen 50 cars and 25 bikes

Starting off, you already know he has 4 daughters and for every daughter there are 4 sons.

So, we take the 4 daughters and add 4 to each one:

1 daughter + 4 sons = 5 children

We complete that equation 4 times for each daughter, and we end up with 20 children as our answer.

Hope this helps you out a bit! Stay safe and stay healthy! :D

Answer:

12 boxes.

Step-by-step explanation:

We need to find the greatest common factor of 251 and 180:

First find the prime factors :

252 = 2*2*3*3*7

180 =  2*2*3*3*5

So the GCF = 2*2*3*3 = 36.

So id each box is identical, there could be 7 boxes of dark chocolates and 5 boxes of milk chocolates each containing 36 chocolates.

Total number of boxes = 12.

Answer:

Translated 3 units down 2 units left.

Step-by-step explanation:

It looks like the functions are the same, so if you see, it was translated 3 units down and 2 units left.

Answer:

54 9/10

Step-by-step explanation:

The perimeter is the sum of all the sides

13 1/4 + 12 1/5 + 18 1/4 + 11 1/5

Add up the whole numbers

13+12+18+11 = 54

1/4+1/5+1/4+1/5

2/4+2/5

1/2+2/5

Get a common denominator

1/2*5/5 + 2/5*2/2

5/10 +  4/10

9/10

Add them back together

54 9/10

Answer:

54°

Step-by-step explanation:

The overall angle degrees of a trinangle 180°

Since we know that once of the angles is 72° we subract that from 180°

That equals 108°

Then we divide 108° since that is the sum of both the angles.

108/2= 54, so y= 54°

The equation in standard form is given by:

[tex]7x + y - 9 = 0[/tex]

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

The general equation in standard form is:

[tex]Ax + By + C = 0[/tex]

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

The first equation is:

[tex]7x + 3 = 5[/tex]

Setting equal to zero:

[tex]7x + 3 - 5 = 0[/tex]

[tex]7x - 2 = 0[/tex]

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

The second equation is:

[tex]y - 1 = 6[/tex]

[tex]y - 1 - 6 = 0[/tex]

[tex]y - 7 = 0[/tex]

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

Combining them, and placing in standard form:

[tex]7x - 2 + y - 7 = 0 + 0[/tex]

[tex]7x + y - 9 = 0[/tex]

A similar problem is given at https://brainly.com/question/14664782

Answer:

E : x=12

Step-by-step explanation:

ACCORDING TO THE THEOREM

(PD)(PC) = (AP)(PB)

8(3+x)=10x

24+8x=10x

24=10x-8x

24 = 2x

x = 12

Answer:

12

Step-by-step explanation:

PD * PC = AP * PB

= 8 * (3 + x) = 10 * x

= 24 + 8x = 10x

= 10x - 8x = 24

= 2x = 24

= 12

Answer:

288 votes

Step-by-step explanation:

wright out what you know

Blue: 5/8

Green: 5/9 (of 3/8 because it is the remaining parts) so 5/24

Red: 1 - (5/8 + 5/24) = 1/6

Find the total amount of people

You know that 1/6 of the population is 48, so the total population is 288 (48×6)

Multiply the total population by the fractions to get the number of votes

Answer:

please please please please show please

Answer:

The skeleton is approximately 18970 years old.

Step-by-step explanation:

The amount of Carbon-14 remaining after t years is given by the following equation:

[tex]N(t) = N(0)(1-r)^{t}[/tex]

In which N(0) is the initial amount and r is the decay rate, as a decimal.

Carbon-14 has a half-life of about 5700 years.

This means that [tex]N(5700) = 0.5N(0)[/tex]

So

[tex]N(t) = N(0)(1-r)^{t}[/tex]

[tex]0.5N(0) = N(0)(1-r)^{5700}[/tex]

[tex](1-r)^{5700} = 0.5[/tex]

[tex]\sqrt[5700]{(1-r)^{5700}} = \sqrt[5700]{0.5}[/tex]

[tex]1-r = 0.9999[/tex]

[tex]r = 1 - 0.9999[/tex]

[tex]r = 0.0001[/tex]

So

[tex]N(t) = N(0)(1-r)^{t}[/tex]

[tex]N(t) = N(0)(0.9999)^{t}[/tex]

He finds that the fossil contains 15% of the amount of carbon-14 anticipated when compared to a living femur of the same size.

The age is t for which N(t) = 0.15N(0). So

[tex]N(t) = N(0)(0.9999)^{t}[/tex]

[tex]0.15N(0) = N(0)(0.9999)^{t}[/tex]

[tex](0.9999)^{t} = 0.15[/tex]

[tex]\log{(0.9999)^{t}} = \log{0.15}[/tex]

[tex]t\log{0.9999} = \log{0.15}[/tex]

[tex]t = \frac{\log{0.15}}{\log{0.9999}}[/tex]

[tex]t = 18970.25[/tex]

Rounding to the nearest year.

The skeleton is approximately 18970 years old.

Answer:

Mark as Brainliest Please :)

Step-by-step explanation:

Answer:

The price for 3.75 pounds of cherries is $17.775.

Step-by-step explanation:

The price las week was $ 4.99 and it got a discount of 15% for this week, this means that the price for this week is 100% of the one prior minus 15%, therefore it is 85% of the last price. We need to calculate the price per pound with this discount as shown below:

[tex]\text{this week} = \text{last week}*\frac{95}{100}\\\\\text{this week} = 4.99*0.95 = 4.74 \text{ per pound}\\[/tex]

Since the price is $4.74 per pound and we want to buy 3.75 pounds, then the total amount we need to pay is:

[tex]\text{total amount} = 3.75*4.74 = 17.775[/tex]

The price for 3.75 pounds of cherries is $17.775.

The "density of probability" is represented by the Y-axis in the normal distribution.It indicates the likelihood of finding values close to comparable places on the X-axis.

Y is the number of trial on which lock is opend so, P(Y=y) be the probability that key opens  the lock on y th trial Lets draw first key

p(1 st key opens the lock) =1-1/5= 4/5

Hence p(1 st key does not open the lock  = 1- 1/5 =4/5

Since  p (Lock is opened on 1 st triual ) = p(1st key opens the lock )

Hence , P(Y =2 ) 1/4 .4/5 = 1/5

p( y = 4) = 1/5

p(y = 5 ) =1/5

To learn more about probability function refer

https://brainly.com/question/28021875

#SPJ2

Answer:

Step-by-step explanation:

We are told that P(x)  is the profit of saling x blu ray discs. P(1000) is our profit for selling 1000 blu ray discs. So, our profit is 5000. Recall that the derivative P'(x) represents the rate at which the function P(x) is increasing/decreasing (increasing if P'(x) is positive, or decreasing otherwise) by increasing the values of x. In this case P'(1000)=-3, so the profit will decrease -3 if we increase x in one unit.

Answer:

Step-by-step explanation:

The question is incomplete. Here is the complete question.

Consider the following pair of equations:

y = 3x + 3 ... 1

y = x − 1 ... 2

Explain how you will solve the pair of equations by substitution. Show all the steps and write the solution in (x, y) form .

From both equations, we will substitute y = 3x+3 in equation 1 into 2 to have;

3x+3 = x-1

collecting the like terms;

3x-x = -1-3

2x = -4

Dividing both sides by 2 will give;

2x/2 = -4/2

x = -2

Substituting x = -2 into equation 1;

y = 3x+3

y = 3(-2)+3

y = -6+3

y = -3

The solution in (x, y) form is (-2, -3)

Answer:

Step-by-step explanation:

Put the values of x and y in the equations and solve the resulting system.

  A(2) +(-3) = 5

  A(2) +B(-3) = 20

__

The first equation tells the value of A:

  2A = 8 . . . . add 3

  A = 4 . . . . . .divide by 2

This and the second equation tells the value of B:

  (4)(2) -3B = 20

  -3B = 12 . . . . . subtract 8

  B = -4 . . . . . . . divide by -3

The values of A and B are 4 and -4, respectively.

Answer:

Step-by-step explanation:

First ,we round 1.79 to the nearest whole dollar:

since 7 ≥ 5 then 1.79 rounded to the nearest whole dollar is 2

now ,we can estimate the greatest number she can download:

26/2 = 13

Answer:

-10

Step-by-step explanation:

goes up by 4 each value

Answer:

-10

Step-by-step explanation:

in that chain,

it is 10,6,2,-2,-6,-10

The diameter of a circle is twice the radius.

Diameter = radius x 2

                = 6.5 x 2

                = 13 cm

Answer:

13

Step-by-step explanation:

diameter is two times the radius

6.5 x 2 = 13

The integral is path-independent if we can find a scalar function f such that grad(f ) = A. This requires

[tex]\dfrac{\partial f}{\partial x}=2x-y[/tex]

[tex]\dfrac{\partial f}{\partial y}=x+y[/tex]

Take the first PDE and integrate both sides with respect to x to get

[tex]f(x,y)=x^2-xy+g(y)[/tex]

where g is assumed to be a function of y alone. Differentiating this with respect to x gives

[tex]\dfrac{\partial f}{\partial y}=-x+\dfrac{\mathrm dg}{\mathrm dy}=x+y\implies\dfrac{\mathrm dg}{\mathrm dy}=2x+y[/tex]

which would mean g is *not* a function of only y, but also x, contradicting our assumption. So the integral is path-dependent.

Parameterize the unit circle (call it C) by the vector function,

[tex]\mathbf r(t)=\cos t\,\mathbf i+\sin t\,\mathbf j[/tex]

with t between 0 and 2π.

Note that this parameterization takes C to have counter-clockwise orientation; if we compute the line integral of A over C, we can multiply the result by -1 to get the value of the integral in the opposite, clockwise direction.

Then

[tex]\mathrm d\mathbf r=-\sin t\,\mathbf i+\cos t\,\mathbf j[/tex]

and the (counter-clockwise) integral over C is

[tex]\displaystyle\int_C\mathbf A\cdot\mathrm d\mathbf r[/tex]

[tex]\displaystyle=\int_0^{2\pi}((2\cos t-\sin t)\,\mathbf i+(\cos t+\sin t)\,\mathbf j)\cdot(-\sin t\,\mathbf i+\cos t\,\mathbf j)\,\mathrm dt[/tex]

[tex]\displaystyle=\int_0^{2\pi}1-\sin t\cos t\,\mathrm dt=2\pi[/tex]

and so the integral in the direction we want is -2π.

By the way, that the integral doesn't have a value of 0 is more evidence of the fact that the integral is path-dependent.

A: Five people each paying $14.50 means that the total bill was [tex]5\cdot\$14.50=\boxed{\$72.50}.[/tex]

B: Subtract the number of people he already has from the number of people he needs to get [tex]42-29=\boxed{13}[/tex] people.

C: Divide 96 by 8 to get [tex]\boxed{12}[/tex] packs.

Arithmetic is where it all begins, y'know?

Answer:

Hope this helps though I m not sure about the first one since I got another answer 72.5 but it isn't there

Answer:

Probability that 32 or more from this sample used Internet Explorer as their browser is 0.9015.

Step-by-step explanation:

We are given that according to Net Market Share, Microsoft's Internet Explorer browser has 53.4% of the global market.

A random sample of 70 users was selected.

Let [tex]\hat p[/tex] = sample proportion of users who used Internet Explorer as their browser.

The z score probability distribution for sample proportion is given by;

                            Z  =  [tex]\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }[/tex]  ~ N(0,1)

where, p = population proportion of users who use internet explorer = 53.4%

           [tex]\hat p[/tex] = sample proportion = [tex]\frac{32}{70}[/tex] = 0.457

           n = sample of users = 70

Now, probability that 32 or more from this sample used Internet Explorer as their browser is given by = P( [tex]\hat p[/tex] [tex]\geq[/tex] 0.457)

      P( [tex]\hat p[/tex] [tex]\geq[/tex] 0.457) = P( [tex]\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }[/tex] [tex]\geq[/tex] [tex]\frac{0.457-0.534}{\sqrt{\frac{0.457(1-0.457)}{70} } }[/tex] ) = P(Z [tex]\geq[/tex] -1.29)

                            = P(Z [tex]\leq[/tex] 1.29) = 0.9015

The above probability is calculated by looking at the value of x = 1.29 in the z table which has an area of 0.9015.

Answer:

i dont understand the language

Step-by-step explanation: