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2 years ago

You don’t have ti explain just tell me if it’s true or not

Mathematics

2 answers:

Marysya12 [62]2 years ago

8 0

The student is not correct ..

Misha Larkins [42]2 years ago

3 0

Answer:

no its not true

Step-by-step explanation:

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A survey of 250 adults found that during the last year, 70 traveled by plane but not by train, 70 traveled by train but not by p

marta [7]

<h2>Answer:</h2>

People who didn't travel by any of these modes = 250 - 205 = 45

<h2>Step-by-step explanation:</h2>

In the question,

Total number of people included in the survey = 250

People who traveled by plane but not train = 70

i.e.

a + d = 70 ...........(1)

People who traveled by Train but not Plane = 70

i.e.

c + e = 70 ...........(2)

People who traveled by Bus but not Plane or Train = 20

i.e.

b = 20 ...........(3)

People who traveled by Bus and Plane = 45

i.e.

g + d = 45 ..............(4)

People who traveled by all three = 20

i.e.

g = 20 .............(5)

People who traveled by Plane or Train = 185

i.e.

a + d + c + e + f + g = 185 ............(6)

So,

People who didn't travel by any of these modes = 250 - (a + b + c + d + e + f + g)

So, on putting from eqn. (3) and (6) we get,

a + b + c + d + e + f + g = 185 + 20 = 205

So,

Therefore, People who didn't travel by any of these modes = 250 - 205 = 45.

6 0

2 years ago

A student answered 49 problems on a test correctly and received a grade of 98%. How many problems were on the test, if all the p

Leona [35]

Answer:

50 questions.

Step-by-step explanation:

if you divide 100 by 49 you get 2.04 round down, each question is 2 points per question and the student got a 98% then just multiply 49 by 2 just to make sure, then go up. 50 times 2 is 100%, so the answer is 50 questions

3 0

2 years ago

David bought a car for 5000$ for how much should he sell it if he wants 10% profit from it

BartSMP [9]

Answer:

Step-by-step explanation:

5,500$ lol

8 0

2 years ago

Read 2 more answers

Is the equation a proportuioanl relationship? x= 2y

prisoha [69]

A proportional change means that for every change in 1 value, it is accompanied by a change in another value that is the same every time. For example, with this, if x=1 then y=2*1=2. If we move x up 1 value to 2, y=2*2=4. Next, if we move x one more value up then 3*2=y=6. As you may notice, y adds up by 2 every time. In addition, you multiply the x value by the same number every time and only that number (no adding anything) and it is therefore a proportional equation

3 0

3 years ago

The equation of line CD is y = 3x - 3. Write an equation of a line perpendicular to line CD in slope-intercept form that contain

Viktor [21]

Answer:

y = -1/3x + 2

Step-by-step explanation:

Given line

y = 3x - 3

Perpendicular lines have negative-reciprocal slopes, so the line will be:

y = -1/3x + b

Use the point (3, 1) to find b:

1 = -1/3(3) + b
1 = -1 + b
b = 2

The line is:

y = -1/3x + 2

3 0

2 years ago