The dot plot shows predictions for the winning time in a 200-meter sprint. The winner finished the race in 22.3 seconds. Find the greatest percent error for a prediction to the nearest tenth of a percent. Justify your answer.

Answer:

138.2

Step-by-step explanation:

find area of small circle and subtract from area of big circle

A=pi*r^2

A=pi*12^2

A=144pi

A=pi*r^2

A=pi*10^2

A=100pi

144pi-100pi=44pi

44pi=138.2

Answer:

Step-by-step explanation:

Area of shaded region = A of outer circle - A of inner circle

r of outer circle = 12 cm

r of inner circle = 10 cm

Now,

As we know, area of circle = [tex]\pi r^2[/tex]

=> [tex](\frac{22}{7} * 12^2) - (\frac{22}{7} * 10^2)[/tex]

= 452.57 - 314.28

= 138.29 cm sq

Round off to nearest tenth = 140 cm sq

Hope this helped. Pls mark it the BRAINLIEST!

Answer:

17

Step-by-step explanation:

Answer:

(-2, -6)

Step-by-step explanation:

Answer:

Step-by-step explanation:

a is 50-8 =42

1/3 -17 +59=42

3-8=5-47=42

Answer: The correct answer is 34.5

Step-by-step explanation:

1. She did not need to multiply both sides by -7.5

2.  A negative * a negative will make a positive number

Hope this helps!

Answer: The first one

Step-by-step explanation: if it's a negative number it means that the lower the number is the higher.

Answer:

A. Slope= -3

B. Slope= -4/3

C. Slope= 11/2

D. Slope= undefined

Step-by-step explanation:

The way I solved it was by graphing the points and then counting the rise/run.

Answer: 27.62

Step-by-step explanation:

plug in 2.3 wherever 'n' is

I'm assuming that the '2' in 8n2 is an exponent

2.3 + 8(2.3)² - 17 =

Using PEMDAS

start out with exponent since there isn't any parenthesis  

(2.3)² = 5.29

2.3 + 8(5.29) - 17

move on to multiplication

8(5.29) = 42.32

2.3 + 42.32 - 17

with addition and subtraction, you do whichever comes first and since this equation starts with addition we'll start there

2.3 + 42.32 = 44.62

then the subtraction

44.62 - 17 = 27.62

Answer:

Step-by-step explanation:

The answer is 27.62

Answer:

hi so here is the answer: 1=2

1=2

2=3

3=42

4=15

Step-by-step explanation:

Answer:

240

Step-by-step explanation:

I think you just add them all together

Answer:

x = 275/9

Step-by-step explanation:

Using the cosine half angle formula,

[tex]\cos \frac{\theta}{2}=-\sqrt{\frac{1-\frac{1}{9}}{2}}=-\frac{2}{3}[/tex]

Using the sine half angle formula,

[tex]\sin \frac{\theta}{2}=\sqrt{\frac{1+\frac{1}{9}}{2}}=\frac{\sqrt{5}}{3}[/tex]

So, [tex]a_1=-\frac{2}{3}[/tex] and [tex]a_2=\frac{\sqrt{5}}{3}[/tex].

Answer:

5.047,  5.105, 5.12, 5.132, 5.406

Step-by-step explanation:

enter Durham right after Raleigh

Answer:

15x + 12

Step-by-step explanation:

Answer: hope this helps ♡

15x+12

1=3392.92

2= 4071.50

3 = 5387.83

4 = 785.40

Steps on how I did it on the picture below, If you have any other questions contact me through discord Acathia#0103

Step-by-step explanation:

Answer: A C and D

Step-by-step explanation:

What I did was look at point A, we see it starts at (-8, 6) this means that if it were to be shifted right 9 and down 4 we would get (1, 2). so, all the answers claiming that the points were shifted right 9 and down 4, or x+9 y-4 are correct.

your answer would be the first option the 3rd and the last option

Answer:

Fish A travels faster and by 0.1 meters per second.

Step-by-step explanation:

According to the table, you can see that the seconds are not being measured constantly. To determine the rate of change of meters per second, we can use subtraction on both the numerator and denominator of the expression. Where we divide it into 1 second.

meters/second → 4.8 – 1.6 / 3 – 1 = 3.2 / 2 =

1.6 meters/second.

Now we can compare the rate from fish B by also diving it into 1 second.

3 meters every 2 seconds → 3/2 =

1.5 meters/second.

Since 1.6 > 1.5, Fish A is faster!

And to compare the simplified rates

1.6 – 1.5 = 0.1 meters.

So Fish A is 0.1 meters faster!

Answer:

12 and 78 are complementary.

80 and 100 are supplementary.

50 and 50 are neither.

Step-by-step explanation:

Hope it helps! =D

Answer: 10

Step-by-step explanation:

b can be 10 as,

7*3 = 21

7+3 = 10

∵ [tex]7x^2[/tex] + 10x + 3

Answer:

4 units

Step-by-step explanation:

The length between point P and Q is from -3 to 1, If you start at -3 and count over the graph to 1 you will get 4 units

Answer:

x=5/2

y=13/2

(x,y) = (5/2 , 13/2)

Answer: (x,y) = (5/2 , 13/2)

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex]2x^2[/tex] + 13x - 24 to be factorised to find the dimensions:

[tex]2x^2[/tex] + 13x - 24

= [tex]2x^2[/tex] + 16x - 3x - 24

= 2x(x+8) - 3(x+8)

= (2x-3)(x+8)

Length = (2x-3)

Breadth = (x+8)

∴ Increasement in length = 2x - 3 +2 = (2x -1)

Increasement in breadth = x + 8 + 2 = (x+10)

Answer:

42% (Sorry if I'm wrong!)

Answer:

40.7%

Step-by-step explanation:

the question was tricky but I am glad I was able to help

Answer:

hmm

Step-by-step explanation:

Answer:

1. 16 inches

2. 1256 square feet

Answer:

A numerical expression contains numbers and operations. An algebraic expression is almost exactly the same except it also contains variables

Answer:

Step-by-step explanation:

Both are similar as they result of both is same. The only difference is their methods of solving them. In numeric expressions, it takes long calculation while in algebraic expressions, we break the expression and then solve it to obtain the result in simpler form.

Hope it helps. Mark my answer the BRAINLIEST!

Answer:

Step-by-step explanation:

(27) [tex]7x^2[/tex] + 9x + 2

= [tex]7x^2[/tex] + 7x + 2x + 2

= 7x(x+1) + 2(x+1)

= (7x+2)(x+1)

(29) [tex]8x^2[/tex] - 2x - 1

= [tex]8x^2[/tex] - 4x +2x - 1

= 4x(2x-1) +1(2x-1)

= (4x+1)(2x-1)

(31) [tex]15x^2[/tex] - 16x - 7

= [tex]15x^2[/tex] + 5x - 21x - 7

= 5x(3x + 1) - 7(3x+1)

= (5x-7)(3x+1)