Select the correct answer.
Which equation represents the vertical line passing through (1,-9)?
A.
x = -9
B.
X = 1
y = -9
D.y = 1

Answer:

n=2

Step-by-step explanation:

2000 pounds = 1 ton 600000 pounds = X tons Hence X tons = (600000 x 1) ÷ 2000 = 300 tons 3 x 10ⁿ = 300 Hence 3 x 10ⁿ = 3 x 10² Hence n= 2

Answer:N = 2

Step-by-step explanation:

I took the quiz and got 100%

Answer:

a

 [tex]P(\= X \ge 51 ) =0.0062[/tex]

b

[tex]P(\= X \ge 51 ) = 0[/tex]

Step-by-step explanation:

From the question we are told that

The mean value is [tex]\mu = 50[/tex]

The standard deviation is  [tex]\sigma = 1.2[/tex]

Considering question a

The sample size is  n = 9

Generally the standard error of the mean is mathematically represented as

      [tex]\sigma_x = \frac{\sigma }{\sqrt{n} }[/tex]

=>   [tex]\sigma_x = \frac{ 1.2 }{\sqrt{9} }[/tex]

=>  [tex]\sigma_x = 0.4[/tex]

Generally the probability that the sample mean hardness for a random sample of 9 pins is at least 51 is mathematically represented as

      [tex]P(\= X \ge 51 ) = P( \frac{\= X - \mu }{\sigma_{x}} \ge \frac{51 - 50 }{0.4 } )[/tex]

[tex]\frac{\= X -\mu}{\sigma }  =  Z (The  \ standardized \  value\  of  \ \= X )[/tex]

     [tex]P(\= X \ge 51 ) = P( Z \ge 2.5 )[/tex]

=>   [tex]P(\= X \ge 51 ) =1- P( Z < 2.5 )[/tex]

From the z table  the area under the normal curve to the left corresponding to  2.5  is

    [tex]P( Z < 2.5 ) = 0.99379[/tex]

=> [tex]P(\= X \ge 51 ) =1-0.99379[/tex]

=> [tex]P(\= X \ge 51 ) =0.0062[/tex]

Considering question b

The sample size is  n = 40

   Generally the standard error of the mean is mathematically represented as

      [tex]\sigma_x = \frac{\sigma }{\sqrt{n} }[/tex]

=>   [tex]\sigma_x = \frac{ 1.2 }{\sqrt{40} }[/tex]

=>  [tex]\sigma_x = 0.1897[/tex]

Generally the (approximate) probability that the sample mean hardness for a random sample of 40 pins is at least 51 is mathematically represented as  

       [tex]P(\= X \ge 51 ) = P( \frac{\= X - \mu }{\sigma_x} \ge \frac{51 - 50 }{0.1897 } )[/tex]

=> [tex]P(\= X \ge 51 ) = P(Z \ge 5.2715 )[/tex]

=>  [tex]P(\= X \ge 51 ) = 1- P(Z < 5.2715 )[/tex]

From the z table  the area under the normal curve to the left corresponding to  5.2715 and

=>  [tex]P(Z < 5.2715 ) = 1[/tex]

So

   [tex]P(\= X \ge 51 ) = 1- 1[/tex]

=> [tex]P(\= X \ge 51 ) = 0[/tex]

Using the normal distribution and the central limit theorem, we have that there is a:

a) 0.0062 = 0.62% probability that the sample mean hardness for a random sample of 9 pins is at least 51.

b) 0% approximate probability that the sample mean hardness for a random sample of 40 pins is at least 51.

In a normal distribution with mean and standard deviation , the z-score of a measure X is given by:

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

In this problem:

Item a:

The probability is 1 subtracted by the p-value of Z when X = 51, hence:

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

By the Central Limit Theorem

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

[tex]Z = \frac{51 - 50}{0.4}[/tex]

[tex]Z = 2.5[/tex]

[tex]Z = 2.5[/tex] has a p-value of 0.9938.

1 - 0.9938 = 0.0062

There is a 0.0062 = 0.62% probability that the sample mean hardness for a random sample of 9 pins is at least 51.

Item b:

Even though the distribution is not normal, the sample size is of [tex]n = 40 > 30[/tex], hence the Central Limit Theorem can be applied.

[tex]s = \frac{1.2}{\sqrt{40}} = 0.19[/tex]

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

[tex]Z = \frac{51 - 50}{0.19}[/tex]

[tex]Z = 5.26[/tex]

[tex]Z = 5.26[/tex] has a p-value of 1.

1 - 1 = 0

0% approximate probability that the sample mean hardness for a random sample of 40 pins is at least 51.

A similar problem is given at https://brainly.com/question/24663213

Answer:

10?

Step-by-step explanation:

Answer:

need pictures of the graphs

Step-by-step explanation:

basically, you'll be looking for a graph that has shifted to the RIGHT 4 units and down 2 units

Answer:

5.35$ worth

Step-by-step explanation:

Answer:

m=-1

Step-by-step explanation:

Answer:

y=0.20x+40; y=1.00x

Step-by-step explanation:

Company 1 is charging upfront and then after u have a unknown variable for how many miles you drive. Company 2 is only charging you 1.00$ per mile driven and depending on how many miles you drove will depend on how much you will pay.

Answer:

X = 6

Step-by-step explanation:

Hope this helps!

....

Answer:

20f + 10 g or   10(2f + g)

Step-by-step explanation:

7f + 4f + 3f + 6f = 20f

2g + 8g = 10g

PLS MARK BRAINLIEST

Answer:

20f+10g

Step-by-step explanation: That was actually really easy

Answer:

18.66 degrees

Step-by-step explanation:

Answer:

Step-by-step explanation:

4(b + 3) = 24

Answer:

Step-by-step explanation:

Area is equal to length times width. In this case, the length is b + 3 (since both b and 3 are part of the width, with the length being 4.

Substitute into the equation for area:

a = lw

a = 4(b + 3)

The area is 24, so the final answer is:

Answer:

700

Step-by-step explanation:

thats the answer ik

Answer:

700

Step-by-step explanation:

688 is closer to 700 than 600 so it is rounded to 700

Answer:

Here u go :3

Step-by-step explanation:

p = price

p=122.50x

x = 8%

122.50 * 0.08 = 9.80

The amount of sales tax on the lawnmower is $9.80.

A sales tax is a form of tax that is levied on the purchase of goods and services. Taxes increase the cost of a good or service. The amount of tax paid can bee determined by multiplying the tax rate by the cost of the lawnmower.

The amount of tax paid = cost of the lawnmower x sales tax

= $122.50 x 0.08

= $9.80

A similar question was answered here: https://brainly.com/question/7855881?referrer=searchResults

Answer:

Its -49.

Step-by-step explanation:

just use a calculator ;)

Answer: A

Step-by-step explanation: c shifts the graph up or down.

Answer:

16 inches

Step-by-step explanation:

Given that :

Diameter of individual size pizza = 8 inches

The size of 2 person pizza, if each person gets the same amount as an individual pizza

The diameter of a 2 person pizza will be :

2 * (diameter of one person pizza)

2 * 8 = 16 inches

Answer:

Depending on how many miles she plans to drive will drive her decision.

At 180 miles both plans will cost the same.

Before that the first plan is cheaper

After the second is cheaper

Step-by-step explanation:

Answer:

The arrangement of days from least to greatest according to number of gallons is:

Tuesday

Thursday

Wednesday

Friday

Monday

Step-by-step explanation:

The given amount of gallons is in decimal form and we have to arrange the numbers in the order from least to greatest.

4.5 is the largest number in the given numbers.

Then comes 4.252 and 4.255

As 0.252<0.255 so 4.252 will be smaller.

The smallest number is 3.6

Arranging the numbers, we get

3.6

3.71

4.252

4.255

4.5

Now arranging the corresponding day to each number,

The arrangement of days from least to greatest according to number of gallons is:

Tuesday

Thursday

Wednesday

Friday

Monday

Answer:

9/20

Step-by-step explanation:

so since trentons pet eats 4/5 of the food each day and marias eats 1.25 each day so we cant put 4/5 and 1.25 to see wat the awnser is so we make 1.25 a fraction 1 1/4 but the demoninators arent the same so what we do is make them the same so i multiply 4x5 and get 20 that is out new denominator and 4x4 is 16 so the 4/5 is now 16/20 and the 1 1/4 is 1 5/20 then subtract but since we have a whole number we subtract that first but they dont go together but we do it anyway and get 4 left over we put the 4 into the 5/20 and get 9/20 and thers ur awnser

Answer:

y=-3

Step-by-step explanation:

16/2=8

-6/2=-3

Answer:

-3

Step-by-step explanation:

I think this -6/16 = -3/8 divided both sides by 2

Answer:

Below is the step by step explaination of the procedure

Step-by-step explanation:

So since he wants to make three cakes we will multiply the recipe by 3 to get the amount of ingredients this person will need.

6*3 = 18 ounces of butter

5*3 = 15 ounces of sugar

7*3 = 21 ounces of flour

3*3 = 9 eggs

2 * 3 = 6 teaspoons of baking powder.

Answer: sin(x + 1) = 0.841*cos(x) + 0.540*sin(x)

Step-by-step explanation:

Here we can use the relation:

Sin(a + b) = sin(a)*cos(b)  + sin(b)*cos(a)

In this case we have:

sin(x + 1)

This means that the graph of sin(x) is shifted one unit to the left.

But we can write this, using the above relation, as:

sin(x + 1) = sin(x)*cos(1) + sin(1)*cos(x)

Now we have no longer a shift, and we can replace:

sin(1) = 0.841

cos(1) = 0.540

Then:

sin(x + 1) = 0.841*cos(x) + 0.540*sin(x)

The correct options are 1, 3 and 5.

Step-by-step explanation:

Let the price of a new shirts be s.

The number of members is 25. The price of 25 shirts is 25s.

The cost must be less than $300. It means

Therefore option 1 is correct.

Divide both sides by 25.

The sign of inequality is < instead of ≤. It means the 12 is not included in the solution set.

Open circle is used for "<" and ">". Closed circle is used for "≤" and "≥".

Since the sign of inequality is <, therefore the circle is open and option 3 is correct.

The value of s is less than 12.

Therefore the arrow points left and option 5 is correct.

Answer:

A,C,E

Step-by-step explanation:

i got it right on edge 2021

Answer:

Slope = 4

y-intercept = -3

Step-by-step explanation:

A slope describe the steepness of a graph, which can also be referred to as gradient. The general equation of a linear graph is given as:

     y = mx ± c

where: m represents the slope of the graph and c the intercept on the required axis.

Given: y = 4x - 3

Comparing this equation with the general equation of a linear graph, it can be observed that; the slope is 4, while the intercept on the y axis is -3.

Thus,

slope = 4

intercept on the y axis = -3

Answer:

D is the Answeer

Step-by-step explanation:

Average rate of change from 3 to 9 seconds is -0.475 feet per second

It is a measure of how much the function changed per unit, on average, over that interval

Given,

P(t) represents the height in feet and t represents the time in second

At t= 3 second, P(t) = 6.26 feet

At t=9 second, P(t) = 3.41 feet

Average rate of change = [tex]\frac{P(b)-P(a)}{b-a}[/tex]

Substitute the values in the equation

Average rate of change = [tex]\frac{P(9)-P(3)}{9-3}[/tex]

[tex]=\frac{3.41-6.26}{9-3}\\=\frac{-2.85}{6}\\[/tex]

= -0.475 feet per second

Hence, the Average rate of change from 3 to 9 seconds is -0.475 feet per second

Learn more about Average rate of change here

https://brainly.com/question/23715190

#SPJ2

Answer:

yes

Step-by-step explanation:

Answer:

sure......................................

Answer:

0.26785714285

Step-by-step explanation:

Answer:

Step-by-step explanation:

3/7 * 5/8

This equates to 15/56.

Multiply 3 and 5 (which equals 15).

Multiply 7 and 8 (which equals to 56)

#teamtrees #WAP (Water And Plant)

Answer:

[tex]C) 7[/tex]

Step-by-step explanation:

[tex]Let\ p(x)\ be\ x^3+kx^2+7x+5\\Let\ g(x)\ be\ (x+6).\\Hence, \ \\The\ zero\ of\ g(x) :\\(x+6)=0\\x=-6\\\\Hence,\\p(x)\ =\ x^3+kx^2+7x+5\\p(-6)=(-6)^3+k(-6)^2+7*-6+5\\=-216+36k-42+5\\=-253+36k\\\\Through\ Remainder\ Theorem\ we\ get\ that\ R=-1\ &\ R=-253+36k [Given]\\Hence,\\-253+36k=-1\\36k=-1+253\\36k=252\\k=7[/tex]

We are Given:

∠1 = 65°

∠2:

∠1 + ∠2 = 180°           (angle 1 and 2 form a Linear Pair)

65 + ∠2 = 180            (Angle 1 = 65°)

∠2 = 180 - 65

∠2 = 115°

∠3:

∠1  = ∠3            (Angle 1 and 3 are vertically opposite)

65 = ∠3             (Angle 1 = 65°)

∠3 = 65°

∠4:

∠4 = ∠2                  (Vertically opposite angles)

∠4 = 115°                (∠2 = 115°)

∠5:

∠5 = ∠1          (Corresponding angles)

∠5 = 65°        (∠1 = 65°)

∠6:

∠6 = ∠2      (Corresponding angles)

∠6 = 115°    (∠2 = 115°)

∠7:

∠7 = ∠3        (Corresponding Angles)

∠7 = 65°       (∠3 = 65°)

∠8:

∠8 = ∠4        (Corresponding angles)

∠8 = 115°      (∠4 = 115°)