The standard deviation of a standard normal distribution a. can be any positive value b. is always equal to one c. can be any value d. is always equal to zero

Answer:

m=3/19

Step-by-step explanation:

Answer:

m = 3/19

Step-by-step explanation:

Let's solve your equation step-by-step.

19m = 3

Step 1: Divide both sides by 19.

19m/19 = 3/19

- You might be wondering, why do we need to divide both sides by 19? -

Well, to find m, you need to get it by itself. So by dividing 19m by 19, m stands alone. But again, what we do to one side, we need to do to the other. So 3 must also be divided by 19.

Answer:

m = 3/19

Answer:

28.72

Step-by-step explanation:

Did the math

The expressions are expanded to give;

1. 2x² - 5x

2. 6x² + 8x

3. 6x² - 12xy

Algebraic expressions are defined as expressions consisting of  variables, coefficients, constants, terms and factors.

These expressions are also known to consist of mathematical operations, which includes;

From the information given, we have that;

a. x (2x - 5)

expand the bracket

2x² - 5x

b. 2x (3x+4)

expand the bracket

6x² + 8x

c. 6x(x-2y)

expand the bracket

6x² - 12xy

Hence, the expressions are 2x² - 5x, 6x² + 8x and 6x² - 12xy

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Answer:

1) 2x² - 5x

2) 6x² + 8x

3) 6x² - 12xy

Step-by-step explanation:

1) x ( 2x - 5 )

To expand the above, multiply both terms inside the brackets by x.

2x² - 5x

2) 2x ( 3x + 4 )

To expand the above, multiply both terms inside the brackets by 2x.

6x² + 8x

3) 6x ( x - 2y )

To expand the above, multiply both terms inside the brackets by 6x.

6x² - 12xy

The sampling distribution of the sample mean for samples of size 400 has a mean of 18 and a standard deviation of 0.25.

To find the sampling distribution of the sample mean, we need to calculate the mean and standard deviation of the sample mean for samples of size 400.

The mean of the sample mean is equal to the mean of the population, which is given as 18.

The standard deviation of the sample mean is equal to the standard deviation of the population divided by the square root of the sample size. Therefore, the standard deviation of the sample mean can be calculated as:

standard deviation of the sample mean = standard deviation of the population / sqrt(sample size)

\(= 5 / \sqrt{(400)}\)

= 5 / 20

= 0.25

So the sampling distribution of the sample mean for samples of size 400 has a mean of 18 and a standard deviation of 0.25.

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Answer:

18,165

hope this helps :D

Answer:

When we divide a whole into equal parts, each part is a fraction of the whole. For example, Fraction of a collection: Fractions also represent parts of a set or collection.

if my answer helps you than mark me as brainliest

theres no answer for it

Answer:

I'm past that level of math. Here's the answer:Letter B

Step-by-step explanation:

Part a

The third angle = 75 degree

It is an acute triangle

Part b

The third angle = 90 degree

It is a right triangle

Part c

The third angle = 81 degree

It is an acute triangle

Part d

The third angle = 45 degree

It is a right triangle

We know the sum of interior angles of the triangle is 180 degrees

Part a

The two angles are

30 degree and 75 degree

The third angle = 180 - (30+75)

= 180 - 105

= 75degree
It is an acute triangle

Part b

43 degree and 47 degree

The third angle = 180 - (43 + 47)

= 180 - 90

= 90 degree

It is a right triangle

Part c

35 degree and 64 degree

Third angle = 180 - (35+ 64)

= 180 - 99

= 81 degree

It is an acute triangle

Part d

45 degrees and 90 degrees

The third angle  = 180 - (90+45)

= 180 - 135

= 45  degree

It is a right triangle

Hence,

Part a

The third angle = 75 degree

It is an acute triangle

Part b

The third angle = 90 degree

It is a right triangle

Part c

The third angle = 81 degree

It is an acute triangle

Part d

The third angle = 45 degree

It is a right triangle

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Answer:

Answer is >= 1.  The reason is that you can't take the square root of a number and it be a rational number.  So you have to avoid having a number that is negative under the square root symbol. In addition, you have to make sure you don't have a zero in the denominator because that would make the answer undefined.

Answer is C

Step-by-step explanation:

Answer:

I belive the answer is c

Try using desmos cauculater ;)

In this case, we'll have to carry out several steps to find the solution.

Step 01:

Data:

b = 35°44'

B = 37°28'

Step 02:

right spherical triangle:

b = 35°44' = (35 + 44/60) = 35.73°

B = 37°28' = (37 + 28/60) = 37.47°

Answer:

the answer is 6

Step-by-step explanation:

just had that question and got it right.

ANSWER:

A polynomial is an algebraic expression of ordered addition, subtraction, and multiplication made up of variables, constants, and exponents.

Polynomials are made up of finite terms. Each term is an expression that contains one or more of the three elements they are made of variables, constants, or exponents.

In this case, for each term, the variable is x, the constant is 1, and the exponents are 5, 2, and 1, respectively.

This means that we have a sum of monomials, that is, that the expression is a polynomial.

The speed that will martin need to drive, if he wants to take the  512 hours is 0.537 mph.

Students determine the rate of change, often referred to as the constant of proportionality (k = y/x), which is the consistent ratio between two proportional values (y/x) indicated by the symbol k, which may be a positive rational integer. The x value and the y value are directly proportional, as in the equation y = kx.

Speed and travel time vary in opposite directions.,

So v ∝ 1/t.

speed = v

time = t

So

=> v = k/t,  k=constant of proportionality.

Since it takes Kris 5 hours when driving at 55 mph,

=>   v = 55mph and t = 5 hours.

=> 55 = k/5

by doing cross multiply

=> k = 55*5

=> k = 275

Hence, to calculate for Martin to drive for 5 hours, we will take k = 275 and t = 5 into v = k/t  

=> v = 275/512

=> v = 0.537 mph

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Answer: B: 45º

Step-by-step explanation:

A triangle is a plane figure that has 3 sides and also 3 angles.

The sum of all of the angles of triangle always 180°.

There are several types of triangles such as :

Equilateral Triangle → 3 equal sides

Isosceles Triangle → 2 equal sides

Scalene Triangle → no equal sides

If triangle ABC is an isosceles right triangle , then one of the angles will be 90°. The other two angles ( base angles ) will have the same value.

We could draw this triangle as shown in the attachment.

Let: the base angle = x

x + x + 90º = 180º

2x + 90º = 180º

2x =  180º +  90º

x =  90º ÷ 2  (90 ÷ 2)

x = 45º

The second option is correct because the measure of one base angle is \(45^\circ\).

Given:

The triangle ABC is an isosceles right triangle.

To find:

The measure of one base angle of the triangle ABC.

Explanation:

In an isosceles right triangle, one angle is a right angle and the other two angles are base angles with equal measures.

Let \(x\) be the measure of one base angle of the triangle. Then the measures of angles of the triangle ABC are, \(x,x,90^\circ\).

In triangle ABC,

\(x+x+90^\circ=180^\circ\)                (Angle sum property)

\(2x=180^\circ-90^\circ\)

\(2x=90^\circ\)

Divide both sides by 2.

\(x=45^\circ\)

The measure of one base angle is \(45^\circ\). Therefore, the second option is correct.

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The slope-intercept representation of a linear function is given by the equation shown as follows:

y = mx + b

The coefficients m and b have the meaning presented as follows:

From the table, we have that the output is the input subtracted by 8, hence the linear function is given as follows:

y = x - 8.

The input for an output of 2 is obtained as follows:

2 = x - 8

x = 10.

The output for an input of 20 is given as follows:

y = 20 - 8

y = 12.

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Answer:

p = 10.50 + b b = 10.50 + p b = 10.50p p = 10.50b​

Step-by-step explanation:

The values on the x axis are 0, 2, 4, 6, 8, 10. The values on the y axis are 0, 21, 42, 63, 84, and 105. Points are shown on ordered pairs 0, 0 and ..

The graph below shows the price of different numbers of mats at a store: A graph is shown. The values on the x axis are 0, 2, 4, 6, 8, 10. The values on the y axis are 0, 21, 42, 63, 84, and 105. Po - the ... 21, 42, 63, 84, and 105. Points are shown on ordered pairs 0, 0 and 2, 21 and 4, 42 and 6, 63 and 8, 84.

Answer:

p = 10.50 + b b = 10.50 + p b = 10.50p p = 10.50b​

Step-by-step explanation:

Answer:hyper bola

Step-by-step explanation:

All you have to do is look up all the answers on images and then pick the one that looks the most similar

Answer:

2/3 is the anwer.

Step-by-step explanation:

Answer:

6 (StartFraction 5 over 6 EndFraction x + two-thirds) = negative 9(6)

5 x + 4 = negative 54

5 x = negative 58

Step-by-step explanation:

Answer:

answers are B,C,F

Step-by-step explanation:

edg 2021

Answer: C. x<-4

Step-by-step explanation:

-2x -8 > 3x + 12

     +8           +8

-2x> 3x +20

-3x   -3x

-5x > 20

/-5    /-5

x<-4  (the sign flips because you divide by a negative.)

To find the length of the guy wire, we use the formula as shown below:

Length of the guy wire = (height of the tower) / sin(angle between the tower and the wire).

The length of the guy wire should be 1190 feet.

The va radio transmission tower is 427 feet tall, and a guy wire is to be attached 6 feet from the top. The angle generated by the ground and the guy wire is 21°. We need to find out how many feet long should the guy wire be?

To find the length of the guy wire, we use the formula as shown below:

Length of the guy wire = (height of the tower) / sin(angle between the tower and the wire)

We are given that the height of the tower is 427 ft and the angle between the tower and the wire is 21°.

So, substituting these values into the formula, we get:

Length of the guy wire = (427 ft) / sin(21°)

Using a calculator, we evaluate sin(21°) to be approximately 0.35837.

Therefore, the length of the guy wire is:

Length of the guy wire = (427 ft) / 0.35837

Length of the guy wire ≈ 1190.23 ft

Rounding to the nearest foot, the length of the guy wire should be 1190 ft.

Answer: The length of the guy wire should be 1190 feet.

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Answer:

y = -3x + 13

Step-by-step explanation:

y - 4 = -3(x - 3)

y - 4 = -3x + 9

y = -3x + 9 + 4

y = -3x + 13

The distance between Brianna and Mark is given as follows:

106 feet.

The three trigonometric ratios are defined as follows:

For each angle, we have that:

Hence Brianna's position is given as follows:

tan(36º) = 45/d.

d = 45/tangent of 36 degrees

d = 62 feet.

Mark's position is obtained as follows:

tan(15º) = 45/d

d = 45/tangent of 15 degrees

d = 168 feet.

Hence the distance is of:

168 - 62 = 106 feet.

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Answer:

C

Step-by-step explanation:

30/50 = each bar costs 0.60 dollars

10/50 = 0.20 dollars

0.60 + 0.20 = 0.80

We want a circle that has center (-1,4) and just skims y=2. We can find the equation of the circle knowing its center and its radius. Knowing that it skims y=2 the radius=4-2=2 (Do you know why? Think visually). Then, the standard form of a circle is given by (x-h)^2+(y-k)^2=r^2 where (h,k) is the center and r is the radius. So the equation is (x+1)^2+(y-4)^2=4

Answer: D

Step-by-step explanation:

Answer:

<D = 130°

Step-by-step explanation:

Supplementary = 180°

<C = 50°

<D = ?

<C + <D = 180°

180° - 50° = 130°

<D = 130°

Answer:

Step-by-step explanation:

50 - 5 - 18 = 27

27 ÷ 3 = 9

x = 9