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dimaraw [331]
3 years ago
12

Which of the following cars is traveling at the fastest rate of speed?

Mathematics
2 answers:
-Dominant- [34]3 years ago
8 0
Divide the miles by the hours....
141/3=47
205/5=41
97/2=48.5
172/4=43

Answer: 97 miles in 2 hours
slega [8]3 years ago
7 0

the answer is C 97 miles in 2 hours :)

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In a class of 55 21 study physics 24 study geography and 23 study economics and physics. if x students study all three subjects
Rus_ich [418]

The total number of students who studied only two subjects is 13.

The given parameters:

  • <em>Total number of students, n = 55 </em>
  • <em>Number of physics students = 21</em>
  • <em>Number of geography students = 24</em>
  • <em>Number of economics students = 23</em>
  • <em>Number of students for the 3 subjects, = x</em>
  • <em>Number of students who studied non = 2x</em>

The number of students who studied only two subjects can be determined by applying overlapping three sets formula as shown below;

Total = n(phy) + n(geo) + n(econ) + n(none)- n(double) - 2(all \ subjects)\\\\55 = 21 + 24 + 23 + 2x-n(double) - 2(x)\\\\55 =  68- n(double)\\\\n(double) = 68-55\\\\n(double) = 13

Thus, the total number of students who studied only two subjects is 13.

Learn more about overlapping three sets here:  brainly.com/question/2041029

3 0
2 years ago
-5/8+(-8/5)= i do not understand how to solve this
nika2105 [10]

Answer:

first find a LCM or least common multiple

-25/40+(-64/40)=

add the numerators or top number

-88/40

then you simplify it

-2 8/40

-2 1/5

I hope this is good enough:

8 0
2 years ago
I’m so confused please help I can’t afford another bad grade
iogann1982 [59]

Answer:

2

Step-by-step explanation:

x / (3y)

Let x = 18 and y = 3

18 / ( 3*3)

Determine the denominator first

18 / ( 9)

Divide

2

8 0
3 years ago
Which problem could be solved by evaluating the expression 7 x (-3)?​
Tasya [4]

Answer:

The answer is -21

Step-by-step explanation:

To find the answer just multiply 7 by 3 and that's 21, so just add a negative sign to 21 and you get -21. I hope this helps :) please give me brainliest :)

6 0
3 years ago
Read 2 more answers
Please help!!!!! thank u!!
Naddika [18.5K]
Set each piece = to 56, assuming that the 2 variables for which you are not solving are each equal to 0.

7x -2(0)-14(0) = 56
7x=56 (divide each side by 7)
X = ?
(__, 0, 0)

7(0) - 2y - 14 (0) = 56
-2y = 56 (divide each side by -2)
Y= ?
(0, __ , 0)

7(0) - 2(0) - 14z = 56
-14z = 56 (divide each side by -14)
z = ?
(0, 0, __)
4 0
3 years ago
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