Why is there a 1/2 in this formula for the area of a trapezoid?

Answer:

1) Sampling error leads to mostly variability, nonsampling errors lead to bias. 2) Because of nonsampling error, a sample is often more accurate than a CENSUS.

Step-by-step explanation:

Answer:

i don't get it.

Step-by-step explanation:

what do you mean firat first correct answer

Answer:

may I know the question?   UwU

First size: SA1 = 2B + Ph, where B = area of the base of the figure, P = perimeter of the base and h = height

SA1 = 2(12*7,2) + (12+7,2)*31 = 172.8 + 595.2 = 768 cm^2

Second size: SA2 = 2B + ph2 (where h2 is the new height, 31.9 cm)
SA2 = 2(12*7,2) + (12+7,2)*31.9 = 785.28 cm^2

It increases (by rounding it down) by 17 cm^2.

Answer:

The Stores profit is 70% or $59.5

How?

The reason is because if it's selling it for 100% of the price, then that means that the store bought it for 85 dollars, and it's selling it for 85 dollars, and that's 0% profit. But because the store has bought it for 100%, and then it's charging another 70% of the price, so the store's profit is 70%.

Now, we find 70% of 85 dollars, which will be the STORE'S PROFIT AMOUNT!

1. Convert percentages into fractions or decimals

For fraction: divide 70 by 100 and remove the % sign.

[tex]{70}\%=\frac{70}{100}[/tex]

For decimal: move the decimal point 2 places to the left and remove the % sign.

[tex]{70}\%=0.7[/tex]

2. Multiply the decimal or fraction by the quantity that equals 100%

[tex]100[/tex]%[tex]=85[/tex]

[tex]\frac{70}{100} *85=0.7*85=59.5[/tex]

Extra info:

170% of 85 = 144.5

70% of 85 = 59.5

The amount of space an object occupies is known as volume.

The area of a two - dimensional figure is the area that its perimeter encloses. The quantity of unit squares that occupy a closed figure's surface is its region.

Volume is a measurement of three-dimensional space that is utilized. It is frequently mathematically quantified using SI-derived units or different imperial or US traditional units. The concept of length is linked to the notion of capacity.

The amount of space an object occupies is known as volume.

More about the volume and area link is given below.

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Answer:

a) pattern a: 4,8,12,16,20

   pattern b: -8,-16,-24,-32,-40

0,4, 8, 12, 16 are the five terms of pattern A and 0,-8, -16, -24, -32 are the five terms of pattern B and the relationship between both the patterns is linear.

Sequence is an enumerated collection of objects in which repetitions are allowed and order matters.

For pattern A:

0, 0+4, 4+4=8, 8+4=12, and 12+4=16

I.e 0,4, 8, 12, 16 are the five terms of pattern A

For pattern B:

0, 0-8=-8, -8-8=-16, -16-8=-24, -24-8=-32

I.e 0,-8, -16, -24, -32 are the five terms of pattern B

The relationship between two patterns is linear

The relationship exist between two patterns because both sequences are arithmetic sequences

Hence, 0,4, 8, 12, 16 are the five terms of pattern A and 0,-8, -16, -24, -32 are the five terms of pattern B and the relationship between both the patterns is linear.

To learn more on Sequence click:

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Answer:

Not me I'm not smart

Step-by-step explanation:

I do not pay attention

Answer:

[ 22 ]

Step-by-step explanation:

First you gotta add the cubes inside of it to find the volume then the ones outside you have to take them out and slant them then you have to fill the whole thing up and there you go [or you can just add all the numbers together for a easier explanation. ] Sorry if its wrong! ~Bread

Answer:

68 in³

Step-by-step explanation:

To find the volume of the figure, we first need to find the volumes of the 2 triangular prisms and 1 rectangular prism.

Triangular prism

[tex]{\boxed{\text{Volume}= \text{base area ×height}}}[/tex]

The base area here is the area of the triangular face, since it is the face that repeats itself throughout the entire length/height to form the volume of prism.

Base area

= area of triangle

= ½(base)(height)

= ½(2)(3)

= 3 in.

Height= 2 in.

Volume

= 3(2)

= 6 in³

Volume of rectangular prism

Volume

= base area ×height

= length ×breadth ×width

= 14(2)(2)

= 56 in³

Total volume

Volume of figure

= 2(6) +56

= 12 +56

= 68 in³

Answer:he gained 88 yards

Step-by-step explanation: just do 11x 8 and you will get 88

so therefore the best option is a have a great day

Answer: Hello your answer would be, [tex]88[/tex].

Step-by-step explanation:

If a football gained 11 yards each play 8 times, you multiply

[tex]11*8[/tex]

Cancel yd

[tex]\frac{11}{8}[/tex]

[tex]Your[/tex] [tex]answer[/tex] [tex]would[/tex] [tex]be[/tex] [tex]A.[/tex] [tex]88[/tex]

Answer:

13.3, but you can't sell 0.3 so round to the nearest whole number, which is 13.

Step-by-step explanation:

Find the volume of the cone package.

[tex]V = \frac{\pi r^{2}h }{3} \\V=\frac{3.14(3^{2})(8) }{3} \\V= \frac{25.12(9)}{3} \\V = \frac{226.08}{3} \\V=75.36[/tex]

Now divide the total cubic inches, 1000, by the volume of one cone package.

1000/75.36 = 13.3

Answer:

7:6

Step-by-step explanation:

cowboys + huskies = total fans

7/13. + huskies = 13/13

huskies = 13/13 - 7/13 = 6/13.

Ratio of cowboys to huskies is

7/13 : 6/13

= 7 : 6

Answer: 7:6

Step-by-step explanation:

The total is 13.

7 vote for cowboys

Step 1: Find how many voted for Huskies

13/13- 7/13= 6/13

Therefore 6 people voted for huskies.

Step 2: Form ratio

7:6

Hope this helps :)) brainliest would be appreciated :D

Answer:

Its A and C. Since you need a reflection then a dilation to result in that image.

Answer:

question 1) 8/52

question 2) 2/3

Step-by-step explanation:

question 1) there are 52 cards in a standard deck. Of those 52 cards there are 4 of each card (e.i 4 aces, 4 kings, 4 tens, etc.). So, 4 of 52 cards are 2s and 4 of 52 cards are Kings. 4 + 4 is 8, so the probability of getting a 2 or a King is 8/52.

question 2) There are 6 numbers on a 6-sided number cube-- 1, 2, 3, 4, 5, 6. The numbers 2 and 5 can be crossed out because we want to find the probability of NOT getting a 2 or 5. This leaves you with the numbers 1, 3, 4, and 6. That is 4 of 6 numbers. Therefore the probability of NOT getting a 2 or 5 is 4/6. We can simplify 4/6 to 2/3.

Answer:

n = 32

Step-by-step explanation:

Given:

[tex]\frac{8}{12}=\frac{n}{48}[/tex]

Solve:

[tex]\mathrm{Cross\; Multiply:}[/tex]

[tex]\frac{8}{12}=\frac{n}{48}[/tex]

[tex]\mathrm{48\times8=384}[/tex]

[tex]\mathrm{384\div12=32}[/tex]

[tex]\mathrm{Hence,n=32}[/tex]

~[tex]\mathrm{[Kavinsky]}[/tex]

Answer: 144 in^2

Step-by-step explanation: First find the area of the base. With squares A=lxw . So, 6x6=36. Then find the area of each triangle, where A= HxL/2. So 9x6=54. 54/2=27. Since there are four triangles we multiply this by four and then add the base. 27x4=108. 108+36=144

Answer:

The other person is correct

Step-by-step explanation:

Got it right on the test!! <3

Answer: 41 degrees

Step-by-step explanation:

Given Values : 90 degrees & 49 degrees

Solve : 90 + 49 = 139

Since the sum of all sides of a triangle is supposed to add up to 180 degrees, subtract 180 - 139, and you will end up with 41 degrees.

Answer:

30%

Step-by-step explanation:

1) Set a linear equation

[tex] \frac{18}{60} = \frac{x}{100} [/tex]

2) Cross multiply

[tex]60x = 18 \times 100[/tex]

3) Multiple the right side

[tex]60x = 1800[/tex]

4) Divide both side by 60

[tex] \frac{60x}{60} = \frac{1800}{60} [/tex]

5) Solve the linear quation

[tex]x = 30[/tex]

The 30% of 60 is 18

Answer:

160

Step-by-step explanation:

0.5 x 80 + 0.3x = 0.4(80 + x)

0.5 x 80 + 0.3x = 32 + 0.4x

40 + 0.3x = 32 + 0.4x

-32             -32

8 + 0.3x = 0.4x

   - 0.3x    -0.3x

8 = 0.1x

/0.1 /0.1

80 = x

2x so... 2(80)... 2x = 160

Answer:

81.75%

Step-by-step explanation:

98 percent on a 60 point test is 59/60

65.50+98/2 = 81.75%

Answer:

7/12

6/12

13/12

Step-by-step explanation:

For the denominators (12, 6) the least common multiple (LCM) is 12,

Equivalent Fractions with the LCD,

7/12 = 7/12 × 1/1 = 7/12

3/6 = 3/6 × 2/2 = 6/12

7/12 = 7/12

3/6 = 6/12

7/12 + 6/12 = 13/12

Answer:

divide by 3 ok bye

Answer:

a ; 24

Apoximenly the same as 8th grade.

Answer:

5/18

Step-by-step explanation:

There are 9 pieces of fruit in the bowl,  tangerines and 5 clementines.

Assuming that they do not put the fruit back

P (tangerine) = number of tangerines/ total = 4/9

Then John keeps his and there are  8 pieces of fruit in the bowl,  

3 tangerines and 5 clementines.

P (Clementine) = number of clementines/ total = 5/8

P (tangerine, no replacement, Clementine) = P (tangerine) * P (Clementine)

                                                                       = 4/9 * 5/8 =5/18

Answer: the answer is 440 cm sq

Step-by-step explanation: since the formula is a+b/2 x h

where a is 19 cm ,

b is 25 cm and

h is 20 cm

Answer:

I'm a little rusty on this subject so if this answer is wrong then please forgive me if I'm wrong.
it would probably be answer 1, the one at the top.

Step-by-step explanation:

So, if you gather -1/2 and then flip which makes -2/1 to cancel it out, then you do the same with -16, and then put -16/1(-2/1) then multiply -16 and -2, which will give you 32. Because the equation is now p<32, it would be an open circle going to 32 or higher. Hope this helps, and if sorry if this is wrong, It's been a while since I've revisited this subject!