Help me out Wishing! Solve the following: (x+3)(x+1)

Answer:

Step-by-step explanation:

z = (X - μ) / σ, where X = date, μ = mean, σ = standard deviation

z = (28.9 - 18.1) / 3.7

z = 18.6

0.06681 is the area for this z.

6.681% shall be shorter than 18.6 inches.

Answer:

reflections across the x axis and a shift down 3 units

Step-by-step explanation:

y = x^2

The negative sign means  it is a reflection across the x axis y = −f(x)

y = -x^2

The subtraction of 3 means we are shifting down 3 units

y = -x^2 -3

Answer:

Step-by-step explanation:

Answer:

Ok

Step-by-step explanation:

:DDD

Answer:

a) 0.076

b) 0.5

c) 0.084

d) 0.25

e) 0.00024

f) 0.156

Step-by-step explanation:

a) In an ordinary deck there are 4 aces. The probability of getting an ace is given by:

[tex]P=\frac{n}{N}[/tex]

n: options for an ace = 4

N: total number of cards = 52

[tex]P=\frac{4}{52}=0.076[/tex]

The probability is 7.6%

b) On the first 100 positive integers, there are 50 odd integer numbers. Then you have:

[tex]P=\frac{50}{100}=0.5[/tex]

The probability of getting an odd number is 50%

c) From a total of 365 day in the year, May has 31 day. Then you have:

[tex]P=\frac{31}{365}=0.084[/tex]

The probability is 8.4%

d) In this case you have two events. To get an odd number with the sum of the number of two dices you need and odd number in one dice and a pair number in the other dice.

The probability is the product of the occurrence of both events. The probability for an odd number is 1/2 and for a pair number is 1/2.

[tex]P=P_{odd}P_{pair}=(\frac{1}{2})(\frac{1}{2})=\frac{1}{4}=0.25[/tex]

The probability is 25%

e) To obtain Head 6 times in a row, the probability is:

[tex]P=\frac{1}{2}*\frac{1}{2}*\frac{1}{2}*\frac{1}{2}*\frac{1}{2}*\frac{1}{2}=0.00024[/tex]

Probability of 0.024%

f) To get Head 4 times from 5 flights, you first calculate the probability for 1 head in five flips:

[tex]P=(\frac{1}{2})^5=\frac{1}{32}[/tex]

There are 5 forms of getting 4 Heads for 5 flips, then you have:

[tex]P=5(\frac{1}{32})=\frac{5}{32}=0.156[/tex]

Te probability is 15.6%

Answer:

Skateboard:

Scooter:

Bike:

Step-by-step explanation:

19 + 14 + 17 = 50 (there were 50 customers)

19 out of 50 = 38%

14 out of 50 = 28%

17 out of 50 = 34%

Hope this helps!

Answer:

The numbers of doors that will have no blemishes will be about 6065 doors

Step-by-step explanation:

Let the number of counts by the  worker of each blemishes on the door be (X)

The distribution of blemishes followed the Poisson distribution with parameter  [tex]\lambda =0.5[/tex] / door

The probability mass function on of a poisson distribution Is:

[tex]P(X=x) = \dfrac{e^{- \lambda } \lambda ^x}{x!}[/tex]

[tex]P(X=x) = \dfrac{e^{- \ 0.5 }( 0.5)^ x}{x!}[/tex]

The probability that no blemishes occur is :

[tex]P(X=0) = \dfrac{e^{- \ 0.5 }( 0.5)^ 0}{0!}[/tex]

[tex]P(X=0) = 0.60653[/tex]

P(X=0) = 0.6065

Assume the number of paints on the door by q = 10000

Hence; the number of doors that have no blemishes  is = qp

=10,000(0.6065)

= 6065

Answer:

18

Step-by-step explanation:

(5/6)x – 4 = 11

(5/6)x = 11 + 4

(5/6)x = 15

5x = 15×6 = 90

x = 90/5 = 18

Answer:

x = 18

Step-by-step explanation:

5/6x - 4 = 11

Add 4 to each side

5/6x - 4+4 = 11+4

5/6x = 15

Multiply by 6/5 to isolate x

6/5 * 5/6x = 15 * 6/5

x = 18

Answer:

B.

Step-by-step explanation:

To have a negative slope, m has to be negative. Any negative slope would show up as a negative coefficient in front of x.

Answer:

510

Step-by-step explanation:

trust me

Answer:

$510

Step-by-step explanation:

600x15%= 90

Then,

You do... 600-90= $510

You subtract 90 from 600 because that is the money saved by the 15% off discount.

Answer:

[tex]x = 1-10t\\y = -6+16t\\z = 7-12t[/tex]

Step-by-step explanation:

We are given the coordinates of points P(1,-6,7) and Q(-9,10,-5).

The values in the form of ([tex]x,y,z[/tex]) are:

[tex]x_1=1\\x_2=-9\\y_1=-6\\,y_2=10\\z_1=7\\z_2=-5[/tex]

[tex]$\vec{PQ}$[/tex] can be written as the difference of values of x, y and z axis of the two points i.e. change in axis.

[tex]\vec{PQ}=<x_2-x_1,y_2-y_1,z_2-z_1>[/tex]

[tex]\vec{PQ} = <(-9-1), 10-(-6),(-5-7)>\\\Rightarrow \vec{PQ} = <-10, 16,-12>[/tex]

The equation of line in vector form can be written as:

[tex]\vec{r} (t) = <1,-6,7> + t<-10,16,-12>[/tex]

The standard parametric equation can be written as:

[tex]x = 1-10t\\y = -6+16t\\z = 7-12t[/tex]

Answer:

A production level of 30 thousand units (x = 30)

Step-by-step explanation:

To find the production level (value of x) that will yield the maximum revenue, we can take the derivative of the function R in relation to x and find when it is equal to 0:

dR/dx = -3x2 + 66x + 720 = 0

x2 - 22x - 240 = 0

Solving the quadratic equation using Bhaskara's formula, we have:

Delta = (-22)^2 + 4*240 = 1444

sqrt(Delta) = 38

x1 = (22 + 38)/2 = 30

x2 = (22 - 38)/2 = -8

The negative value is not valid for our problem, so we have that the value that gives the maximum revenue is x = 30

Answer:

2

Step-by-step explanation:

Since there are four negative signs, we have -1 multiplying each other 4 times,  multiplying by positive 2. This is then 1 * 2, which is 2.

Answer:

+2

Step-by-step explanation:

=> -(-(-(-2))))

=> -(-(+2))

=> -(-2)

=> +2

Answer:

-56/9

Step-by-step explanation:

By Vieta's formulas,

$r + s = -\frac{4}{3}$ and $rs = \frac{12}{3} = 4.$ Squaring the equation $r + s = -\frac{4}{3},$ we get

$r^2 + 2rs + s^2 = \frac{16}{9}.$ Therefore,

$r^2 + s^2 = \frac{16}{9} - 2rs = \frac{16}{9} - 2 \cdot 4 = -\frac{56}{9}}$

Answer:

Slope: 18.5

This means that for every person, it will cost $18.50 for the party.

Step-by-step explanation:

The slope is simply the number by x

Step-by-step explanation:

In my opinion maybe he has spent 98%

Answer: g(x)= -x^2

Step-by-step explanation:

BRO THIS IS THE MOST BASIC ALGEBRA 1 !?!?!?!?!?!?!?!

Answer:

Store A

Step-by-step explanation:

So. What we are going to want to do here is start off by having two stores obviously. And we have the sales that they have. If the discount is 20% rhat means the new price will be 80% of 250. So we take 250 x .8 = 200

If the discount is 25%, that means the new price will be 75% of what it was before hand. So we take 280 x .75 = 210. So the better price is at Store a

Answer:

No

Step-by-step explanation:

There is the same amount of teachers in each department of the school.

He asks 7 different departments of the school and collects the data he wants to.

I think it is not bias

Answer:

no

Step-by-step explanation:

This sample of teachers in the school is not likely to be biased.

Answer:x=-15

Step-by-step explanation:

-3/2x-6=-9/2+21

Step 1: Simplify both sides of the equation.

-3/2x-6=(-9/2-+21)

-3/2x-6=33/2

Step 2: Add 6 to both sides.

-3/2x-6+6=33/2+6

-3/2x=45/2

Step 3: Multiply both sides by 2/(-3).

-3/2x*2/(-3)=2/(-3)*45/2

X=-15

Answer:

x= -15

Step-by-step explanation:

In order to solve this equation, we need to get x by itself. Perform the opposite of what is being done to the equation, to both sides.

-3/2x-6=-9/2+21

First, simplify the right side of the equation. Add -9/2 and 21.

-3/2x-6= (-9/2+21)

-3/2x-6=(-4.5+21)

-3/2x-6=16.5

Now, 6 is being subtracted from -3/2x. The opposite of subtraction is addition. Add 6 to both sides.

-3/2x-6+6=16.5+6

-3/2x=16.5+6

-3/2x=22.5

-3/2 is being multiplied by x. The opposite of multiplication is division. Divide both sides by -3/2.

-3/2x/-3/2= 22.5/ -3/2

When dividing fractions, you can also multiply both sides by the reciprocal of the fraction.

To find the reciprocal, flip the numerator and denominator.

-3/2–flip—> -2/3

-2/3* 3/2x= 22.5*-2/3

x=22.5* -2/3

x=-15

Answer:

6 times a number x squared is added to 7.

Using their written verbal expressions, we can make one ourselves. I wrote "6 times a number x squared is added to 7." But there are many other possibilities.

The expression 6x² + 7 in words will be Six times the square of a number x is added with seven.

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

The quadratic equation is given as ax² + bx + c = 0. Then the degree of the equation will be two.

The quadratic expression is given below.

⇒ 6x² + 7

Then the quadratic expression is written in words that will be

6x² + 7 = Six times the square of a number x is added with seven.

Six times the square of a number x is added with seven.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

Answer: 3 people

Step-by-step explanation:

3 given numbers within 50-59:

5 | 0 4 7

5 is the 50-59 range

0, 4, 7 is the one’s place in the 50-59 range.

Answer:

50-59: 3

Step-by-step explanation:

From the stem and leaf plot, we can see that there are 3 pieces of data between 50 & 59.

Answer:

The food would last 51 days

Step-by-step explanation:

After 15 days are over, you could say that the 16th day would be as follows -

80 soldiers, food finished in 60 - 15 = 45 days.

If 20 more soldiers arrive, there would be a total of 100 soldiers, so if  80 soldiers can finish their food in 45 days  - 1 soldier can finish = 45 * 80. Respectively,  100 soldiers can consume their food in ( 45 * 80 ) / 100  = 36 days.

As 15 days are already over, adding 36 more days = 51 days

The food would last 51 days if 20 more soldiers join after 15 days

There are several possible ways to answer this question, but I hope that explanation helps!

Answer:

A total of 51 days, or 36 days after the extra soldiers join in.

Step-by-step explanation:

Let's say a soldier eats 1 portion of food in 1 days. That portion may be divided into breakfast, lunch , and dinner, but it is still accounted as 1 portion per soldier per day.

There are 80 soldiers and enough food for 60 days.

The number of portions is

60 * 80 = 4800

The fort started with 4800 portions.

80 soldiers ate their portions for 15 days.

80 * 15 = 1200

After 15 days, they have

4800 - 1200 = 3600 portions left.

After 15 days, 20 more soldiers joined in.

Now there are 80 + 20 = 100 soldiers.

There are 3600 portions left for 100 soldiers.

3600/100 = 36

The food would last 36 days after the 15 days, or a total of 51 days.

Answer:

a)Sample size  would be required to obtain a margin of error of 1 days is

n = 179

b) sample size would be required to obtain a margin of error of 2.5 days is n = 20

Step-by-step explanation:

step(i):-

Given Population standard deviation  = 6.83 days

a) Given margin of error = 1 day

The margin of error is determined by

[tex]M.E = \frac{Z_{\alpha } S.D }{\sqrt{n} }[/tex]

Step(ii):-

Given 95 % of confidence level

Now the critical value Z₀.₀₅ = 1.96

[tex]1 = \frac{1.96 X 6.83 }{\sqrt{n} }[/tex]

√n = 13.38

Squaring on both sides, we get

n =  179.206

b)

step(i):-

a) Given margin of error = 2.5 day

The margin of error is determined by

[tex]M.E = \frac{Z_{\alpha } S.D }{\sqrt{n} }[/tex]

Step(ii):-

Given 90 % of confidence level

Now the critical value Z₀.₁₀ = 1.645

[tex]2.5= \frac{1.645 X 6.83 }{\sqrt{n} }[/tex]

Cross multiplication , we get

[tex]\sqrt{n} = \frac{1.645 X 6.83 }{2.5 }[/tex]

√n   = 4.494

Squaring on both sides, we get

n = 20.19

Final answer:-

a)Sample size  would be required to obtain a margin of error of 1 days is

n = 179

b) sample size would be required to obtain a margin of error of 2.5 days is n = 20

Answer:

21°

Step-by-step explanation:

All angles in a triangle add up to 180°.

180 - 31 - 128

= 21

The measure of the third angle is 21°.

Answer:

  A.  The weekly usage of both coupons is decreasing and approaching a horizontal asymptote as x gets larger.

Step-by-step explanation:

You can see that f(x) is a decreasing exponential function because the base is 0.75, a value less than 1. The horizontal asymptote is 10, the constant added to the exponential term.

Obviously, g(x) is decreasing. If we assume it is an exponential function, we know there is a horizontal asymptote. (Every exponential function has a horizontal asymptote.)

__

If you use your graphing calculator's exponential regression function, you can find a good model for g(x) is ...

  g(x) = 950·0.7^x +12

That is, it is an exponential function that decays faster than f(x), but has a higher horizontal asymptote.

_____

Both functions are decreasing and approaching horizontal asymptotes.

Answer:

[tex]a)105=1.05 \times 10^2\\b)0.0019=1.9 \times 10^{-3}\\c)6 590 000 000 000 000=6.59 \times 10^{15}\\d)0.000000000016=1.6 \times 10^{11}[/tex]

[tex]e)32 000=3.2 \times 10^{4}\\f)0.23=2.3 \times 10^{-1}\\g)428000000=4.28 \times 10^{8}\\h)-0.000000000000384=-3.84 \times 10^{-13}[/tex]

[tex]i)256800000000=2.568 \times 10^{11}\\j)0.00000000000002= 2 \times 10^{-14}\\k)349000=3.49 \times 10^{5}\\l)0,0004=4 \times 10^{-4}[/tex]

[tex]m)120 000 000 000 000 000 000=1.2 \times 10^{20}\\n)0, 000 000 000=0\\o)2048=2.048 \times 10^{3}\\p)150 000 000 000=1.5 \times 10^{11}[/tex]

[tex]q)0,4589=4.589 \times 10^{-1}[/tex]

Answer:

7.5 pounds

Step-by-step explanation:

30/4=7.5 :)

Answer:

The answer is B

Step-by-step explanation:

Hope this helps.. if not im sorry :(

It is a 4 : 1 ratio of color to white

or a 1 : 4 white to colored

Explanation:

1cm  = 10mm

1.2cm = 12mm

12 : 48 --> 1 : 4

Answer:

1:4

Step-by-step explanation:

1.2 cm of white fabric per 48 mm of colored fabric:

1.2 cm : 48 mm= 12 mm: 48 mm= 1:4

The ratio is: 1:4

Answer:

Step-by-step explanation: b