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Natali5045456 [20]
3 years ago
13

50 pts if you answer

Mathematics
2 answers:
andrezito [222]3 years ago
7 0

Answer:

3/20

Step-by-step explanation:

Total trials: 20

Tails and 3 is denoted by 3T

No. of 3T's: 3

Experimental probability: 3/20

Olin [163]3 years ago
3 0

Answer:

Will benign Tumors travel to other parts of the body? Why?

Step-by-step explanation:

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Two mechanics worked on a car. The first mechanic charged S95 per hour, and the second mechanic charged S115 per hour.
Norma-Jean [14]

The first mechanic worked for 10 hours and the second mechanic worked for 15 hours.

Step-by-step explanation:

Given,

Charges of first mechanic = $95 per hour

Charges of second mechanic = $115 per hour

Total hours = 25

Total amount charged = $2675

Let,

The number of hours worked by first mechanic = x

The number of hours worked by second mechanic = y

According to given statement;

x+y=25    Eqn 1

95x+115y=2675     Eqn 2

Multiplying Eqn 1 by 95

95(x+y=25)\\95x+95y=2375\ \ \ \ Eqn\ 3

Subtracting Eqn 3 from Eqn 2

(95x+115y)-(95x+95y)=2675-2375\\95x+115y-95x-95y=300\\20y=300

Dividing both sides by 20

\frac{20y}{20}=\frac{300}{20}\\y=15

Putting y=15 in Eqn 1

x+15=25\\x=25-15\\x=10

The first mechanic worked for 10 hours and the second mechanic worked for 15 hours.

Keywords: linear equation, elimination method

Learn more about elimination method at:

  • brainly.com/question/12700460
  • brainly.com/question/12773544

#LearnwithBrainly

6 0
3 years ago
in a winter storm, the amount of snowfall is directly proportional to the time it has been snowing. after 4 hours, a total of 7
zzz [600]

Answer:

ok

Step-by-step explanation:

4 0
3 years ago
Graph the line that passes through the points (8,0) and (2,6) and determine the
pantera1 [17]

Answer:

y= -x+ 8

Step-by-step explanation:

4 0
3 years ago
The student council has 10 members where 5 of the members are Seniors. They need to choose a President, Vice President, Secretar
natima [27]

Answer:

P=1/42.

Step-by-step explanation:

We know that the student council has 10 members where 5 of the members are Seniors. They need to choose a President, Vice President, Secretary and Treasurer. We calculate the probability that the President is a Senior:

We calculate the number of possible combinations:

C_4^{10}=\frac{10!}{4!(10-4)!}=210

Number of favorable combinations is 5.

Threfore, the probability is

P=5/210

P=1/42.

8 0
3 years ago
Which equation could be used to solve the problem? Larry skated 7200 feet in 3 minutes. How many feet per minute did he skate (x
kari74 [83]

A. 7200 feet ÷ 3 minutes = x

Hope it helps!

And happy Pi Day! :D


7 0
3 years ago
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