I need the answer fast

Answer:

Median= 14

Mean= 90

Step-by-step explanation:

Median:

Put the numbers in order,

4, 7, 9, 14, 16, 19, 20 Then after that you find the number exactly in the middle. That number ends up to be 14.

Mean:

Add up all of the numbers and then round it to the nearest tenth: 90

Median= 14

Mean= 90

Answer:

=72/5

Step-by-step explanation:

Combine multiplied terms into a single fraction

Multiply all terms by the same value to eliminate fraction denominators

Cancel multiplied terms that are in the denominator

Answer:

yeah it's B

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

answer is d

Step-by-step explanation:

4+3=7

2i+I=3i

Answer:

175

Step-by-step explanation:

a30 = a1 + f × (n-1)

f= difference between numbers

Answer:

68% of the individuals in the population have an IQ between 85 and 115.  95% of the population has IQ scores between 70 and 130. 99.7% of the population has IQ scores between 55 and 145.

Step-by-step explanation:

Answer:

f(100) = 160.

Step-by-step explanation:

Linear function:

The equation of a linear function has the following format:

[tex]y = mx + b[/tex]

In which m is the slope(how much f(x) changes when x changes by 1) and b is the y-intercept(value of f(x) when x = 0).

Finding the slope:

Suppose we have two points. The slope is the change in the output divided by the change in the input.

In this question, we have points (45,50) and (60,80).

Change in the output: 80 - 50 = 30

Change in the slope: 60 - 45 = 15

Slope: 30/15 = 2

So

[tex]y = 2x + b[/tex]

Point (45,50)

This means that when [tex]x = 45, y = 50[/tex]. We use this to find the value of b.

[tex]y = 2x + b[/tex]

[tex]50 = 2(45) + b[/tex]

[tex]b = -40[/tex]

So

[tex]y = 2x - 40[/tex]

With y = f(x)

What is the value of f(100)?

This is y when x = 100. So

[tex]f(100) = 2(100) - 40 = 200 - 40 = 160[/tex]

f(100) = 160.

Answer: it is invalid

Step-by-step explanation: it is invalid because the data table has 30 out of 100 people stating that they prefer to view movies in theater. This does not have the same ratio as 300 out of 400, and would only work had he said 300 out of 1000. Thus, he is incorrect in his inference.

Answer:

12/35

Step-by-step explanation:

i don’t know the decimal but you can figure that out quickly

Answer:

n = 2.6

Step-by-step explanation:

6.5 : 5

n : 2

6.5/5 = 1.3

2 x 1.3 = 2.6

n = 2.6

i hope this helps

Answer:

cos(37°)

Step-by-step explanation:

sin(53°) = cos(90° - 53°)

sin(53°) = cos(37°)

Answer:

98 degrees

Step-by-step explanation:

first find angle G

53 + 45 + G = 180

subtract 45 and 53 from both sides

G = 82

angle g is supplementary (add up to 180) to x

x +82 = 180

subtract 82 from both sides

x = 98

Answer:

x = 98°

Step-by-step explanation:

There are 180° in a triangle, and 180° on a line.

180° - 53° - 45° = 82°

180° - 82° = 98°

Answer:

Volume = 1,437.3 cm³

Step-by-step explanation:

Volume of rectangular pyramid = ⅓*a²*h

Where,

Base edge = a = 14 cm

Height = h = 22 cm

Plug in the values

Volume = ⅓*14²*22

Volume = 1,437.3 cm³ (nearest tenth)

Answer:

7x + y =36

Step-by-step explanation:

( y- y1) = m(x - x1)

y - 8 = -7( x - 4)

y- 8 =-7x +28

y = -7x +36

7x + y =36

Answer:

CI =[- 4.588; 15.4]

Since the calculated value of t= 4.244  falls in the critical region so we reject H0 and conclude that we  are not confident that the mean difference in lifetime between front and rear brake pads is 99.5%

Step-by-step explanation:

The given data is

Car      Rear      Front           d= rear- front

1         40.6           32.5             8.1

2         35.4            27.1             8.3

3         46.6           35.6              11

4         47.3           35.6             11.7

5        38.7           30.3             8.4

6        51.2              41.1             10.1

7        50.6           40.7             9.9

8       45.9            34.3             11.6

9       47.2            36.5             10.7

∑                                           = 89.8

Let the hypotheses be

H0: ud= 0 against the claim Ha: ud ≠0

The degrees of freedom = n-1= 9-1= 8

The significance level is 0.05

The test statistic is

t= d`/sd/√n

The critical region is ║t║≤ t (0.025,8) = ±2.306

Sd= 7.05434553

d`=∑d/n= 89.8/9= 9.978

Therefore

t= d`/ sd/√n

t= 9.978/ 7.054/√9

t= 4.244

1) Since the calculated value of t= 4.244  falls in the critical region so we reject H0 and conclude that we  are not confident that the mean difference in lifetime between front and rear brake pads is 99.5%

2) the confidence interval for the difference of two samples can be calculated by

d ` ± td sd/√n

9.978 ±2.306* 7.054/√9

- 4.588; 15.4

Answer:

17 in

Step-by-step explanation:

H²= 8²+15²

H²= 64+225

H²=289

H= √289

H= 17

Answer:

17 in. (option C)

Step-by-step explanation:

Pythagorean Theorem: a² + b² = c²

Set the hypotenuse as x.

8² + 15² = x²

Simplify.

x² = 289

Remove the square from both sides.

x = √289 = 17

Thus, the answer is C, 17.

Answer:

. Bisector cut a segment into 2 ≅ parts. 3. Intersect lines form vertical ∠ ... Prove: EC ≅ FB ... Prove: AD ≅ CB ... or SR ≅ ST Side ... SX + XR ≅ SY + YT.

Step-by-step explanation:

In the given triangles, as per given conditions ΔRSY≅ Δ TSX  by SAS (Side Angle Side) theorem.

" Triangle is defined as the two dimensional geometrical shape with three vertices , three sides, and three angles enclosed in it."

Theorem used

SAS theorem ( Side angle side)

In given triangles, corresponding sides and included angle of one triangle is equals to corresponding sides and included angle of another triangle , then triangles are said to be congruent.

According to the question,

Given,

In a  triangles,

SX ≅ SY              ______ [tex]( 1)[/tex]

XR ≅ YT             ______[tex]( 2 )[/tex]

Add [tex](1)[/tex] and [tex](2)[/tex] we get,

SX + XR ≅ SY + YT

⇒SR ≅ ST           ____[tex](3)[/tex]

In triangle ΔRSY and ΔTSX,

SY ≅ SX ( given)

∠RSY ≅∠TSX ( Common angle)

SR ≅ ST (from [tex](3)[/tex] )

By SAS theorem (side angle side theorem ) stated above we get,

ΔRSY≅ Δ TSX

Hence, ΔRSY≅ Δ TSX by SAS theorem as per the given condition of a triangle.

Learn more about triangles here

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Answer:

7 bookcases

Step-by-step explanation:

Find how many bookcases the custodian can repaint by dividing 5.25 by 0.75:

5.25/0.75

= 7

So, the custodian will be able to repaint 7 bookcases

Answer:

the answer is 15.3. hope this helps:)

Step-by-step explanation:

Answer:

1517g or 1.517kg

Step-by-step explanation:

Answer:the answer is 60

Step-by-step explanation:

The question is “what is the length” so what I think we are supposed to do is to add since the height is 4 and the area is 64 so the length has to be 6

Hope I helped

Answer:

your answer should be, B

Answer: decreased by 42%

Step-by-step explanation:

Answer:

lol

Step-by-step explanation:

Answer:

C. 7 - 3 = 4

Step-by-step explanation:

Given

[tex]Dataset: 3, 3, 4, 5, 6, 7, 10[/tex]

Required

The IQR

The IQR is calculated using:

[tex]IQR = Q_3 - Q_1[/tex]

Where:

[tex]Q_3 \to[/tex] Median of the upper [tex]half[/tex]

[tex]Q_1 \to[/tex] Median of the lower [tex]half[/tex]

The dataset has 7 values, so the median is: (7 + 1)/2 =8/2 = 4th position.

Split to two, we have:

[tex]Lower \to 3, 3, 4[/tex]

[tex]Median \to 5[/tex]

[tex]Upper \to 6, 7, 10[/tex]

The lower half has 3 data; So, the median is the 2nd position.

Hence:

[tex]Q_1 = 3[/tex]

The upper half has 3 data; So, the median is the 2nd position.

Hence:

[tex]Q_3 = 7[/tex]

So, the IQR is:

[tex]IQR = Q_3 - Q_1[/tex]

[tex]IQR = 7 - 3[/tex]

[tex]IQR = 4[/tex]

The expression that represents how many more cards Pat has in her collection than Quentin has in his collection is B. (p − q)(x) = 6 + 4x

An expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both.

Pat's collection is represented as p(x) = 34 + 16x.

Quentin's collection is represented as q(x) = 28 + 12x.

The difference will now be:

= 34 + 16x - (28 + 12x)

= 34 + 16x - 28 - 12x

= 6 + 4x

Therefore, the correct option is B.

Learn more about expressions on:

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Answer:

2nd one.

Step-by-step explanation: