Avery tosses a coin 100 times. It lands on heads 60 times and on tails 40 times. What is the experimental probability that it will land on heads

Answers

Answer 1

Answer: i belive 60% becuse it lands on heads 60 time out of a hudred

Answer 2

Answer:

What’s it like in fraction form though?

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The coordinates of the vertices of a polygon are (-2, 1). (-3, 3), (-1, 5), (2, 4), and (2, 1). What is the perimeter of the polygon to the nearest tenth of a unit. Do not label your answer. Answer with a number only.

Answers

Answer:

$15.2\ units$

Step-by-step explanation:

step 1

Plot the vertices of the polygon to better understand the problem

we have

$A(-2, 1). B(-3, 3), C(-1, 5), D(2, 4),E(2, 1)$

using a graphing tool

The polygon is a pentagon (the number of sides is 5)

see the attached figure

The perimeter is equal to

$P=AB+BC+CD+DE+AE$

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^(2)+(x2-x1)^(2)}$

step 2

Find the distance AB

$A(-2, 1). B(-3, 3)$

substitute in the formula

$d=\sqrt{(3-1)^(2)+(-3+2)^(2)}$

$d=\sqrt{(2)^(2)+(-1)^(2)}$

$d_A_B=√(5)=2.24\ units$

step 3

Find the distance BC

$B(-3, 3), C(-1, 5)$

substitute in the formula

$d=\sqrt{(5-3)^(2)+(-1+3)^(2)}$

$d=\sqrt{(2)^(2)+(2)^(2)}$

$d_B_C=√(8)=2.83\ units$

step 4

Find the distance CD

$C(-1, 5), D(2, 4)$

substitute in the formula

$d=\sqrt{(4-5)^(2)+(2+1)^(2)}$

$d=\sqrt{(-1)^(2)+(3)^(2)}$

$d_C_D=√(10)=3.16\ units$

step 5

Find the distance DE

$D(2, 4),E(2, 1)$

substitute in the formula

$d=\sqrt{(1-4)^(2)+(2-2)^(2)}$

$d=\sqrt{(-3)^(2)+(0)^(2)}$

$d_D_E=√(9)\ units$

$d_D_E=3\ units$

step 6

Find the distance AE

$A(-2, 1).E(2, 1)$

substitute in the formula

$d=\sqrt{(1-1)^(2)+(2+2)^(2)}$

$d=\sqrt{(0)^(2)+(4)^(2)}$

$d_A_E=√(16)\ units$

$d_A_E=4\ units$

step 7

Find the perimeter

$P=AB+BC+CD+DE+AE$

substitute the values

$P=2.24+2.83+3.16+3+4=15.23\ units$

Round to the nearest tenth of a unit

$P=15.2\ units$

Help please!! please answer ASAP... I NEED HELP...
i feel soo dumb...

Answers

Answer:

dont say you feel dumb we all need help

Step-by-step explanation:

Answer: 15.71 is it when using 3.14 as the pi substitute

Step-by-step explanation:

The arc is simply the length of its portion of a circumference. Because its half of a circle, we can just find the circumference of the circle and divide it by 2.

C = 2 * 3.14 * radius/2 (because semi circle)

= 15.71

Is 36 yards and 2 feet greater than 114 feet and 2 inches

Answers

36 Yards and 2 feet equals 110 feet, so no.

THIS IS A KEY: 1 yd=3 ft 1 ft=12 in THIS IS NOT A KEY: 36 yds=1296in 2 ft=24 in so 1296+24=1320 in and...114 ft and 2 in=1370 So...114 ft and 2 ins is grater than 36 yds and 2 ft Hope this helps

Joannie lent $200 to her sister. Four years later, her sister repaid her in full with $228. What simple annual interest rate did Joannie's sister pay? A. 3.0% B. 3.5% C. 4.0% D. 4.5%

Answers

The correct answer is B 3.5%

The answer is 3.5% because 3.5% of 200 is 7 so after four years you have collected 28 dollars from the past four years.

5. A car travels 30 miles in of an hour What is the average speed, in miles per hour of the car?

Answers

Answer:

60 mph

Step-by-step explanation:

I'm not sure if you meant 30 miles in half an hour, but if that's the case, your answer is 60 mph.

There are two halves in an hour so

30 x 2 = 60

Cupro-nickel coins are minted by mixing copper and nichel in the ratio 4:1a) How much copper is needed to mix with 20kg of nickel?
b) How much nickel is needed to mix with 20kg of copper?

Answers

Copper: Nickel = 4:1

a) How much copper needed for 20 kg nickel
   C:N = 4: 1
   C:20 = 4:1

C/20 = 4/1 Cross Multiply
C*1 = 4*20
C = 80

80kg Copper would be needed.

b) How much Nickel would be needed for 20 kg of Copper
   C:N = 4: 1
   20:N = 4:1

20/N = 4/1 Cross Multiply
4*N = 1*20
4N = 20 Divide both sides by N.

N = 20/4 = 5

5kg Nickel would be needed.

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