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3 years ago

Jacquie used an app to simulate a coin flip 40 times. It lands on heads 22 times.

Mathematics

2 answers:

GaryK [48]3 years ago

7 0

Answer:

She is incorrect

Step-by-step explanation:

If she is doing her math based on her results, she is incorrect. To find out the correct answer, first divide 1000/40 which is 25. Next, multiply 22 and 25. After you do the math, you find that the answer is 550. So based on her results, if she did 1000 trials she would land on heads 550 out of 1000 times.

laila [671]3 years ago

6 0

Answer:

incorrect

Step-by- step explanation:

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Kendra is twice as old as Tim. In 10 years, Kendra will be four years older than Tim. How old are Kendra and Tim now?

podryga [215]

Answer:

kendra is 8 and tim is 4

Step-by-step explanation:

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3 years ago

Max read 100 pages in 2 h. Express this rate in the simplest fraction form.

Delicious77 [7]

Answer:

50 pages per hour

Step-by-step explanation:

$\frac{100 pages}{2 hr} =\frac{50(2)}{1(2)} =\frac{50}{1} =50$

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4 years ago

Can someone solve this for me?

Helga [31]

well, we know it's a rectangle, so that means the sides JK = IL and JI = KL, so

$\stackrel{JK}{3x+21}~~ = ~~\stackrel{IL}{6y}\implies 3(x+7)=6y\implies x+7=\cfrac{6y}{3} \\\\\\ x+7=2y\implies \boxed{x=2y-7} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{JI}{6y-6}~~ = ~~\stackrel{KL}{2x+20}\implies 6(y-1)=2(x+10)\implies \cfrac{6(y-1)}{2}=x+10 \\\\\\ 3(y-1)=x+10\implies 3y-3=x+10\implies \stackrel{\textit{substituting from the 1st equation}}{3y-3=(2y-7)+10} \\\\\\ 3y-3=2y+3\implies y-3=3\implies \blacksquare~~ y=6 ~~\blacksquare ~\hfill \blacksquare~~ \stackrel{2(6)~~ - ~~7}{x=5} ~~\blacksquare$

5 0

2 years ago

Please solve B, C, D, E, and F and I will give Brainliest!

kykrilka [37]

Answer:

a. 125

b. 25/64

c. 0.25

d. 343

e. 49/4

f. 0.81

Step-by-step explanation:

multiply by the same number by the amount of times the power tells you

b. 5*5 = 25 8*8= 64

c. 5*5 = 25 0.5*0.5 = 0.25

d. 7*7*7 = 343

e. 7*7 = 49 2*2= 4

f. 9*9 = 81 0.9*0.9= 0.81

5 0

3 years ago

4x < 16 or 12x > 144

Leviafan [203]

$4x < 16\ or\ 12x > 144\\\\x < 16:4\ or\ x > 144:12\\\\x < 4\ or\ x > 12\\\\x\in(-\infty;\ 4)\ \cup\ (12;\ \infty)$

4 0

3 years ago