plzz help if you can.. i'm confused

Answer:

Adding 5 seconds would give

Mean= X`= 258.8 seconds

Standard Deviation=S=   82.8 seconds

The standard deviation remains the same.

Mean z= 0

Standard Deviation z= 1

Step-by-step explanation:

Mean= 4.23 minutes,

Standard Deviation=  1.38 minutes

He wants to add 5 seconds of silence between songs,

So we will convert these minutes into seconds

Mean= 4.23 minutes * 60= 253.8 seconds

Standard Deviation=  1.38 minutes* 60= 82.8 seconds

Adding 5 seconds would give

Mean= X`= 4.23 minutes * 60 +5 = 258.8 seconds

Standard Deviation=S=  1.38 minutes* 60= 82.8 seconds

The standard deviation remains the same.

b. Transforming into z- scores would give

Mean z= x`-u/s= 4.23-4.23/1.38= 0

Standard Deviation z= s/s= 1.38/1.38= 1

This is because changing into z- scores is simply a linear transformation.

Answer:

385

Step-by-step explanation:

[tex]t_{n}=a+(n-1)d\\t_{100}=-11+(100-1)4\\t_{100}=-11+99 \times ~4\\=-11+396\\=385[/tex]

Step-by-step explanation:

A is the correct answer of this question

The slopes that could have be plotted on the coordinate grid are -7 and 1/7

Before we determine the required slope of the two lines, we must understand that:

So, we choose the options that the product of the slopes equals -1

For option A:

[tex]product = 2 \times 1/2\\product = 1[/tex]

Hence option A is incorrect

For option B;

[tex]product = 4 \times - 4 = -16\\[/tex]

Hence option B is incorrect

For option C.

[tex]product = 1/3 \times 1/3\\product = 1/9[/tex]

Hence option C is incorrect

For option D;

[tex]product = -7 \times 1/7\\product = -1[/tex]

This shows that the slopes that could have been plotted on the coordinate grid are -7 and 1/7

Learn more here: https://brainly.com/question/13140886

Answer:

Step-by-step explanation:

From the question,  since it will take 90 days that is 3 months for her hourly pay to increase to $8 per hour

we proceed to calculate her pay for the first 3 months

she works a total of 32 hours in a week

hence for three months, she would work 32*4*3= 384hours

therefore her pay for three months is= 7.5*384= $2880

Now the remaining one month her pay rate has been increased to $8 per hour

the number of hours in one month is 32*4= 128 hours

her pay would be 128*8= $1024

Her straight time pay for 4months is $2880+$1024 = $3904

Answer:

15 + -7 OR 15 - 7

Step-by-step explanation:

Answer:

In geometry, an intersection is a point, line, or curve common to two or more objects (such as lines, curves, planes, and surfaces). The simplest case in Euclidean geometry is the intersection of two distinct lines, which either is one point or does not exist if the lines are parallel.

Step-by-step explanation:

Answer:

A point

Step-by-step explanation:

In geometry, an intersection is a point, line, or curve common to two or more objects (such as lines, curves, planes, and surfaces).

Answer: The interest will be $191.25

Step-by-step explanation:

Answer:

[tex]\large\boxed{\tt y = 4}[/tex]

Step-by-step explanation:

[tex]\textsf{We are asked for the value of y.}[/tex]

[tex]\textsf{To begin, we are given an equation. Note that our goal is to find y, so we should}[/tex]

[tex]\textsf{isolate y.}[/tex]

[tex]\large\underline{\textsf{To Isolate y;}}[/tex]

[tex]\textsf{Usually, isolation is segregation, or to keep alone. Basically, y should be the only}[/tex]

[tex]\textsf{term on the left side of the equation.}[/tex]

[tex]\large\underline{\textsf{To Solve;}}[/tex]

[tex]\textsf{We just need to isolate y, then we should have our value.}[/tex]

[tex]\large\underline{\textsf{Our Equation;}}[/tex]

[tex]\tt y+(-5)=-1[/tex]

[tex]\textsf{Note that when we add a negative, we are actually subtracting.}[/tex]

[tex]\tt y-5=-1[/tex]

[tex]\large\underline{\textsf{Solving;}}[/tex]

[tex]\textsf{Remove -5 on the left side by adding 5 to both sides of the equation.}[/tex]

[tex]\tt y-5+5=-1+5[/tex]

[tex]\underline{\textsf{Hence;}}[/tex]

[tex]\large\boxed{\tt y = 4}[/tex]

Answer:

-8

So A and C are the correct answers

Step-by-step explanation:

A) -8 because -2 -6 = -8

B) -6 because 1 - 7 = -6

C) -8 because 5 - 13 = -8

D) -2 because 3 - 5 = -2

Hope that helped!!!

Answer:

(A) and (C)

Step-by-step explanation:

To find equivalent expressions, we need to first find the value of the original, [tex]-3+(-5)[/tex]

Adding a negative is the same as subtracting a positive. So, it's equivalent to  [tex]-3-5[/tex], which is [tex]-8[/tex].

Now we test all the other expression to see if they equal -8.

A:

[tex]-2 + (-6)\\\\-2-6\\\\-8[/tex]

So this works.

B:

[tex]1 + (-7)\\\\1 - 7\\\\-6[/tex]

So this doesn't work.

C:

[tex]5+(-13)\\\\5-13\\\\-8[/tex]

So this works.

D:

[tex]3+(-5)\\\\3-5\\\\-2[/tex]

So this doesn't work.

Hope this helped!

Answer:

The change in the height of the seat of the Ferris wheel is a reduction in height of approximately 74.25 feet

Step-by-step explanation:

The given information are;

The position of the seat on the Ferris wheel = The center level of the wheel

The diameter of the Ferris wheel = 210 feet

The angle of rotation of the wheel = 45° counterclockwise

The height of a point on the Ferris wheel is given by the relation;

h = A·cos(b·x + c) + d

With regards to the question, we have;

h = The height of the seat of the Ferris wheel

A = The amplitude = 1/2 × The diameter of the wheel = 210/2 = 105 feet

360/b = The period

c = The phase shift = 90°

d = The mid line = 0

For a rotation of 45° counterclockwise or-45° clockwise, we have;

b·x = 45°, therefore;

h  = 105 × cos(45° + 90°) + 0 = 105 × cos(135°) + 0

h = 105 × cos(135°) ≈ -74.25 feet

Therefore, the height of the seat of the Ferris wheel reduces by 74.246 feet.

In this exercise we have to know about rotation, therefore: the change in the height of the seat of the Ferris wheel is a reduction in height of approximately 74.25 feet.  

The given information are:

The height of a point on the Ferris wheel is given by the relation:

[tex]h = A*cos((b)(x) + c) + d[/tex]

With regards to the question, we have:

h = The height of the seat of the Ferris wheel

A = The amplitude = 1/2 × The diameter of the wheel = 210/2 = 105 feet

360/b = The period

c = The phase shift = 90°

d = The mid line = 0

For a rotation of 45° counterclockwise or-45° clockwise, we have;

[tex](b)(x) = 45\\h = 105 *cos(45 + 90) + 0 = 105 * cos(135) + 0\\h = 105 *cos(135) = -74.25 feet[/tex]

Therefore, the height of the seat of the Ferris wheel reduces by 74.246 feet.

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Answer:

l= 1 /2p - w

Step-by-step explanation:

Answer:

l=  1 /2p - w

Answer:

Ask your parents if no one have the answer.

Step-by-step explanation:

sorry if I don't have the answer.

Answer:

48

Step-by-step explanation:

120*(5/5-3/5)

120*(2/5)

24*2

48

Answer: C. 1 + (-6) = -5

Please mark Brainliest!

Answer:

yes

Step-by-step explanation:

555 is a positive integer and the integers are rational numbers

Step-by-step explanation:

yes

555 can write in fraction a/b

=

[tex] \frac{555}{1} [/tex]

Answer:

108

Step-by-step explanation:

72/ 6 = 12

12 x 9 = 108

Step-by-step explanation:

Hope it helps you in your learning process.

Answer:

b goes with s c goes with p a with r and d with q all you have to do is turn the one on the left to be the same way as the one on the right

Step-by-step explanation:

Answer:

below

Step-by-step explanation:

1)

flip the parallelogram ABCD to be in the same position as PQRS

2)

The corresponding sides are the parallel ones

3)

the correspondings angles are the congruent ones that are similar

Answer:

the answer is 1+ (-13)= -12

Answer:

2/3

Step-by-step explanation:

2/12+4/9

Find a common denominator

16/72+ 32/72

48/72

Simplify

=2/3

Hope this helps

Hey there! I'm happy to help!

This is a solution because x has the same value as y. They are both 6.

I hope that this helps! Have a wonderful day! :D

Answer:

Yes.

Step-by-step explanation:

(6,..): this is the x-coordinate

(...,6): this is the y-coordinate.

6=6, so yes, this is a solution to y=x.

Answer: The required value of z is 6.

Step-by-step explanation: Given that 5+2z is 3 more than 3z-4.

We are to find the value of z.

According to the given information, the equation expressing the given statement mathematically can be written and solved as follows:

5+2z=(3z−4)+3

⇒5+2z=3z−1

⇒3z−2z=5+1

⇒z=6.

Thus, the required value of z is 6.

Answer:

I'm pretty sure its choice c and d i'm sorry if its not i did all the math, although i might have gotten it wrong, just double check.

Step-by-step explanation:

Answer:

1)

b) Profit divided by number of writers

c) Profit divided by expenses

2)

b) Yes. According to both definitions, website B generates more profit per resource invested.

Answer:

Step-by-step explanation:

2(5-4g) + 3g - 11 = 5(g-3) - 12 - 3g (remove the parantheses)

10 - 8g + 3g - 11 = 5g - 15 - 12 -3g (Calculate and collect like terms)

-1 - 5g = 2g - 27 (move the terms)

-5g -2g = 27 + 1  (collect like terms and calculate)

-7g = -26 (divide both sides)

so G = 26/7

Answer:

G=27/6

Step-by-step explanation:

2(5−4g)+3g−11=5(g−3)−12−3g

(2)(5)+(2)(−4g)+3g+−11=(5)(g)+(5)(−3)+−12+−3g

10+−8g+3g+−11=5g+−15+−12+−3g

(−8g+3g)+(10+−11)=(5g+−3g)+(−15+−12)

−5g+−1=2g+−27

−5g−1=2g−27

Step 2: Subtract 2g from both sides.

−5g−1−2g=2g−27−2g

−7g−1=−27

Step 3: Add 1 to both sides.

−7g−1+1=−27+1

−7g=−26

Step 4: Divide both sides by -7.

-7g/-7=-26/-7

g=26/7

Answer:no problem homie

x= 2

Step-by-step explanation:

Answer:

x < 1

Step-by-step explanation:

2x + 2 < 6x - 2

2 < 4x - 2

4 < 4x

x < 1

Answer:

[tex]\frac{6}{7}[/tex]

Step-by-step explanation:

The division symbol is also the middle line in a fraction. Since both are negative it results in a positive fraction.

Hope that helped and have a great day!

Answer:

2.7 tablespoons.

Step-by-step explanation:

If you divide 72 by 48 you will get 2.57142857143, round to the nearest tenth you get, 2.7 tablespoons