solve for x
-2x+1=9
plz help i forgot a bit of what me and my class have been learning because they didn't give us notes to help us

The probability that the mean blood pressure of 64 randomly selected people will be less than 118 is approximately 0.9938.

You want to find the probability that the mean blood pressure of 64 randomly selected people will be less than 118, given that blood pressure readings are normally distributed with a mean of 116 and a standard deviation of 6.4.

Step 1: Calculate the standard error of the mean (SEM).
\(SEM=\frac{standard deviation}{\sqrt{sample size} }\)
\(SEM=\frac{6.4}{\sqrt{64} }\)
\(SEM=\frac{6.4}{8}\)
\(SEM = 0.8\)

Step 2: Calculate the z-score for the given value (118) using the formula:
\(z = \frac{X-mean}{SEM}\)
\(z = \frac{118-116}{0.8}\)
\(z=\frac{2}{0.8}\)
z = 2.5

Step 3: Use the z-score to find the probability (area under the curve to the left of z).
From the z-table or using an online z-score calculator, the probability for a z-score of 2.5 is approximately 0.9938.

So, the probability that the mean blood pressure of 64 randomly selected people will be less than 118 is approximately 0.9938.

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Answer:

7

Step-by-step explanation:

rate of change of function not necessary mean linear, it can be the slope of a tangent line.

a: y=8x+3    slope = 8

b: rate of change: 1

8-1=7

I wish this is true...

Answer:

the answer is D, acute angles

Step-by-step explanation:

all of the angles in the triangle are less than 90°

Answer:

D

Step-by-step explanation:

the triangle has no right angles

the triangle has 3 acute angles (they are less than 90 degrees)

lines are not crossing

there are no parallel lines in the triangle (in fact no triangles have parallel lines)

We have drawn scatter diagram and given an example of a data point that affects the appropriateness of using a linear regression model and  of a school that is cost effective and rated highly by parents.

The scatter diagram plots two sets of numerical data, one on each axis, to see if there is a link between them. The points will fall along a line or curve if the variables are correlated.

We are using graphing calculator to show the points to make scatter diagram

If a linear model is adequate, the histogram should be about normal, and the residuals scatterplot should have random scatter. The linear model is not adequate if we detect a curved connection in the residual plot.

Parents can help with events and activities at school, as well as communicate with instructors. They can also be active at home in a variety of ways, including as assisting their children with homework and other obligations, and engaging in talks about educational principles and attitudes.

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The 'x' coordinate is negative and 'y' coordinate is positive.

A fraction is a part of a whole. In arithmetic, the number is expressed as a quotient, in which the numerator is divided by the denominator. In a simple fraction, both are integers. A complex fraction has a fraction in the numerator or denominator. In a proper fraction, the numerator is less than the denominator.

We know that :

π = 180

Therefore,

3π/4 = (3×180)/4 = 3 × 45

3π/4 = 135

In second quadrant, we have negative value if x coordinate and positive value of y coordinate.

Hence, the angle lies in the second quadrant. Second quadrant is enclosed by the negative x axis and positive y axis.

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Answer:

x is negative, and y is positive.

Step-by-step explanation:

The answer above is correct.

The statistics z is -1.878 and the p value is 0.0302

Given,

Number of random sample selected, n = 6967

Number of surveys returned, x = 1331

Estimated proportion of return rate;

p = 1331/6967 = 0.192

Significance level, ∝ = 0.01

z would represent the statistic

We investigate the assertion that the return rate is less than 20%, and the following hypotheses are tested:

Null hypothesis, p₀ ≥ 0.2

Alternative hypothesis, p₀ < 0.2

The statistics, z = (p - p₀) / √(p₀(1 - p₀)/n)

That is,

z = (0.191 - 0.2) / √(0.2(1 - 0.2)/6967) = -1.878

Using the alternative hypothesis and the following probability, we can now get the p value:

p value  = p(z < - 1.878) = 0.0302

We fail to reject the null hypothesis when the p value exceeds the significance level of 0.01 and there is insufficient evidence to support the conclusion that the return rate is less than 20% at 1% of significance.

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Answer:

$11747

Step-by-step explanation:

\(m=7400x^{t} \\2*7400=7400x^{6}\\x=1.122\\t=4\\m=7400*1.122^{4} =11747\)

Answer: -9/22

Step-by-step explanation:

Answer:

-0.40909090909........

Step-by-step explanation:

Answer:314

Step-by-step explanation:

314 votes

471 x (2/3) = 314

Answer:

Step-by-step explanation:

P = efe =4.8

f =0.26

substitute the value of P and f into the equation to obtain the value of e

4.8 = e*0.26*e

4.8 = 0.26*e^2

make e^2 the subject of the formula

e^2 =4.8/0.26 =18.62

find the square root of e

e =\(\sqrt{x} 18.46\\\)

e = 4.3

Lower bound of P = 4.8 - 4.79 = 0.01

The pair adjacent angles are CAD and DAE

The pair of complimentary angles are BAC and CAD.

The pair of supplementary angles are BAD and DAE

The pair of vertical angles are BAC and FAE.

Adjacent angles are two angles which have common side and a common vertex.

Complementary angles are when two angles add up to 90 degrees.

Supplementary angles are when two angles add up to 180 degrees.

Therefore,

Adjacent angles are CAD and DAE

Complimentary angles are BAC and CAD.

Supplementary angles are BAD and DAE

Vertical angles are BAC and FAE.

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Answer:

x = -2 or x = -16

Step-by-step explanation:

We need to find the absolute value of x and to do that we need to follow the below process:

|x+9| = 7 get rid of brakes

x+9 = 7 or x+9 = -7

if

x+9 = 7 subtract 9 from both sides

x = -2

if

x+9 = -7 subtract 9 from both sides

x = -16

The type of sampling is stratified random sampling

Given that,

The population is first divided into subgroups based on one or more important variables. this sampling is nothing but stratified random sampling

What Is Stratified Random Sampling?

A crucial element of the sampling method known as stratified random sampling is the division of a population into smaller subgroups known as strata. Strata are established in stratified random sampling, also known as stratification, based on the shared characteristics or attributes of the participants, such as wealth or level of education. Examining life expectancy and population demographics is just one of the many benefits and uses of stratified random sampling. Other names for stratified random sampling are proportional or quota random sampling..

Hence, this sampling is stratified random sampling

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Answer:

Step-by-step explanation:

x= 5y+10

x+y=4

Answer:

B.Figures A and C

Step-by-step explanation:

because if you trust god god will give enlightenment and also your smart and Beautifull.

Step-by-step explanation: 2 for the price of 1 because if you did that x3 it would be 6 for the price of 3 but if you did 3 for the price of 2 it would be 4 for the price of 6.

The Cayley tables and find isomorphic groups for the given quotient groups are attached below.

To compute the Cayley tables and find isomorphic groups for the given quotient groups, let's go through each case one by one:

(1) Z12/([6]12):

The group Z12 is the cyclic group of order 12 generated by [1]12. The subgroup [6]12 consists of all elements that are multiples of 6 in Z12. To compute the quotient group Z12/([6]12), we divide Z12 into the cosets of [6]12.

The cosets are:

[0]12 + [6]12 = {[0]12, [6]12}

[1]12 + [6]12 = {[1]12, [7]12}

[2]12 + [6]12 = {[2]12, [8]12}

[3]12 + [6]12 = {[3]12, [9]12}

[4]12 + [6]12 = {[4]12, [10]12}

[5]12 + [6]12 = {[5]12, [11]12}

The quotient group Z12/([6]12) is isomorphic to the cyclic group Z6.

(2) (Z/12Z)/(4Z/12Z):

The group Z/12Z is the cyclic group of order 12 generated by [1]12Z. The subgroup 4Z/12Z consists of all elements that are multiples of 4 in Z/12Z. To compute the quotient group (Z/12Z)/(4Z/12Z), we divide Z/12Z into the cosets of 4Z/12Z.

The cosets are:

[0]12Z + 4Z/12Z = {[0]12Z, [4]12Z, [8]12Z}

[1]12Z + 4Z/12Z = {[1]12Z, [5]12Z, [9]12Z}

[2]12Z + 4Z/12

Z = {[2]12Z, [6]12Z, [10]12Z}

[3]12Z + 4Z/12Z = {[3]12Z, [7]12Z, [11]12Z}

The quotient group (Z/12Z)/(4Z/12Z) is isomorphic to the Klein four-group V.

(3) D6/(r²):

The group D6 is the dihedral group of order 12 generated by a rotation r and a reflection s. The subgroup (r²) consists of the identity element and the rotation r². To compute the quotient group D6/(r²), we divide D6 into the cosets of (r²).

The cosets are:

e + (r²) = {e, r²}

r + (r²) = {r, rs}

r² + (r²) = {r², rsr}

s + (r²) = {s, rsr²}

rs + (r²) = {rs, rsrs}

rsr + (r²) = {rsr, rsrsr}

The quotient group D6/(r²) is isomorphic to the cyclic group Z3.

(4) D6/(r³):

The subgroup (r³) consists of the identity element and the rotation r³. To compute the quotient group D6/(r³), we divide D6 into the cosets of (r³).

The cosets are:

e + (r³) = {e, r³}

r + (r³) = {r, rsr}

r² + (r³) = {r², rsr²}

s + (r³) = {s, rsrs}

rs + (r³) = {rs, rsrsr}

rsr + (r³) = {rsr, rsrsr²}

The quotient group D6/(r³) is isomorphic to the cyclic group Z2.

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Answer:

3816

Step-by-step explanation:

Answer:

i believe the answer is A

Step-by-step explanation:

hope this works

Answer: 120 pepper slices

Step-by-step explanation: Since 6 pizzas is twice as many pizzas as 3 pizzas, you would also double the amount of pepper slices, giving you 120 pepper slices.

120

First, divide 60 and 3

60 ÷ 3 = 20

Then, multiply 20 and 6

20 × 6 = 120

Answer:

Yes

Step-by-step explanation:

y = 5x + 4

x + y = 40

x = 6

y = 34

34 = 5(6) + 4

34 = 30 + 4

34 = 34

34 + 6 = 40

Answer:

me name mort am swag

Step-by-step explanation: me my mom. she say help the noob. am no help you. doodoo pants.

The original price of the varsity jacket before the discount was $5.93.

What is the equivalent expression?

Equivalent expressions are expressions that perform the same function despite their appearance. If two algebraic expressions are equivalent, they have the same value when we use the same variable value.

To find the original price of the varsity jacket before the discount, we can subtract the discount amount from the total price.
In this case, the discount amount is $112.72, and the total price paid is $118.65.

Therefore, the original price of the varsity jacket can be calculated as follows:

Original Price = Total Price - Discount Amount

Original Price = $118.65 - $112.72

Original Price = $5.93

Hence, the original price of the varsity jacket was $5.93.

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Answer:

1. 8

2. 15

3. 12

4. 12

5. 10

6. 18

7. 21

8. 32

Step-by-step explanation:

same sign add

Answer:

\(\boxed{\mathtt{Area \approx 227ft^{2}}}\)

Step-by-step explanation:

\(\textsf{We are asked to find the area of a circle.}\)

\(\textsf{First, we should identify the formula for the area of a circle.}\)

\(\large\underline{\textsf{Formula:}}\)

\(\mathtt{Area = \pi (radius)^{2}}\)

\(\textsf{The radius is \underline{half} of the diameter.}\)

\(\mathtt{\frac{17}{2} = 8.5ft.}\)

\(\textsf{Let's begin solving for the area.}\)

\(\large\underline{\textsf{Substitute:}}\)

\(\mathtt{Area = \pi (8.5)^{2}}\)

\(\mathtt{Area = 72.25 \pi}\)

\(\boxed{\mathtt{Area \approx 227ft^{2}}}\)

Answer:

0.13

Step-by-step explanation:

Almost 50 percent of dropouts said their primary reason for leaving school was a lack of engagement or interest in the academic material.

In the study mentioned, the term "FCS 5230" is not directly related to the topic of dropouts and their reasons for leaving school. However, if you are referring to a specific quizlet set for the course FCS 5230, it is important to note that it might not be directly relevant to the study on dropouts.

The study highlights the importance of engaging students in their learning process. Schools should strive to create a stimulating and supportive learning environment to foster student interest. Incorporating interactive teaching methods, real-world applications of concepts, and providing personalized support can enhance student engagement and motivation.

Moreover, it is crucial for educators and policymakers to address the individual needs and challenges of students to prevent dropouts. This can include implementing early intervention programs, offering academic and emotional support, and providing career counseling to help students see the value and relevance of their education.

In conclusion, the primary reason for leaving school for almost 50 percent of dropouts was a lack of engagement or interest in the academic material. To reduce dropout rates, it is essential to focus on improving student engagement and providing necessary support to ensure their academic success.

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If there are 6 circles and 10 triangles, then the simples ratio of circles to total shapes is 3 : 8

Total number of circles = 6 circles

Total number of triangles = 10 triangles

Total number of shapes = Total number of circles + Total number of triangles

Substitute the values in the equation

Total number of shapes = 6 + 10

= 16 shapes

The ratio of circles to total shapes = Total number of circles : Total number of shapes
Substitute the values

= 6 : 16

Simplify the ratio

= 3 : 8

Therefore, the simplified ratio of circles to total shapes is 3 : 8

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