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mrs_skeptik [129]
3 years ago
9

Michael is 5 years old than rui feng and. Vishal is thrice as old as micheal if rui feng is 3 years old find Michael present age

and sum of their ages in 6 years time
Mathematics
1 answer:
lorasvet [3.4K]3 years ago
3 0

Answer:

a) Micheal's present age = 8 years old

b) The sum of their ages in 6 years time = 63 years.

Step-by-step explanation:

From the above question, we know that

Rui feng is 3 years old

We are told that

• Michael is 5 years old than Rui feng

Micheal's present age is calculated as:

= 5 + Rui feng's age

= 5 + 3 = 8 years

• Vishal is thrice as old as Micheal

Vishal's present age is calculated as

= 3(Micheal age)

= 3(8)

= 24 years.

The sum of their ages in six years time

= ( 3 + 6) +( 8 + 6) + ( 24 + 6)

= 18 + 15 + 30

= 63 years

Therefore, a) Micheal's present age = 8 years old

b) The sum of their ages in 6 years time = 63 years.

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When solving the system of equations 3x−3y=1 and −2x+4y=2 algebraically, a good first step is to:
bearhunter [10]

Answer:

A. Multiply 3x−3y=1 by 2, and multiply −2x+4y=2 by 3.

Step-by-step explanation:

Given

3x - 3y = 1

-2x+ 4y = 2

Required

A good first step

A good first step is to eliminate x and this is done as follows:

Multiply 3x - 3y = 1 by 2 (gotten from coefficient of x in the second equation)

Multiply -2x+ 4y = 2 by 3 (gotten from coefficient of x in the first equation)

This gives:

6x - 6y = 2

-6x + 12y = 6

Add both equations

6x - 6x - 6y + 12y = 2 + 6

6y = 8

y = \frac{4}{3}

<em>Hence (a), is true</em>

5 0
3 years ago
A university professor asked his class of 42 students when they had studied for his class the previous weekend. There responses
Basile [38]

<u>ANSWERS:</u>

a) 16 students

b) 25 students

c) 2 students

<u>STEP BY STEP:</u>

There are 42 students in total. This question can be solved by <em>"Principal of Inclusion and Exclusion"</em>

Question a)

The students that studied on Sunday in total with overlaps is 30. To figure out the students that ONLY studied on Sunday you need to first minus the overlaps in the combos:

the combos:

3, 10, 6, 2

Since the last combo included all of the other dates, we need to minus it:

1, 8, 4, 2

Now we can use the total of Sunday and minus the combos that includes Sunday:

30 - (4 + 2 + 8)  = 16 students

Question b)

To figure out all the students that only studied on ONE day, not 2 not 3, just one day. We need to figure out the students that studied for Saturday and Friday using the same method before for figuring out Sunday:

<u>Friday:</u> 9 - 4 - 1 -2 = 2 students

<u>Saturday:</u> 18 - 1 - 2- 8 = 7 students

and now add them all together: 2 + 7 + 16 = 25 students

That is the total number of students that studied on one day.

Question c)

Now for the numbers of students that didn't study... We can just use the total to minus everything else!

42 - (25 + 1 + 4 + 8 + 2) = 2 students!!!

<em>And thats all done!  If you still don't get it, please ask!</em>

7 0
3 years ago
What is the m Show work
Ghella [55]

Answer:

measure of angle A is 80 degree.

Step-by-step explanation:

isosceles triangle will have same base angles

first base angle is 50, and the second will also be 50

3 angles of a triangle will add up to be 180 degree.

A is the vertex angle.

So 50 + 50 + A = 180

100 + A = 180

A = 80.

8 0
3 years ago
Evaluate.
NikAS [45]

The value of the expression [(114−34)⋅(−23)3]÷(−4) is equal to the fraction 5451/4 or the mixed fraction 1362 whole number, 3/4.

<h3>Evaluation for the expression considering PEDMAS</h3>

P – Parenthesis First: B – Brackets First

E – Exponents

D – Division

M – Multiplication

A – Addition

S – Subtraction

We evaluate the expression [(114−34)⋅(−23)3]÷(−4) as follows;

114 - 34 = 79

-23 × 3 = -69

so;

[(114−34)⋅(−23)3] = 79 × −69

[(114−34)⋅(−23)3] = −5451

[(114−34)⋅(−23)3]÷(−4) = −5451/−4

divide through by the common factor −1

[(114−34)⋅(−23)3]÷(−4) = 5451/4

Therefore, the simplified value for the expression [(114−34)⋅(−23)3]÷(−4) is the fraction 5451/4 or the mixed fraction 1362 whole number, 3/4

Learn more about PEDMAS here: brainly.com/question/345677

#SPJ1

6 0
1 year ago
PLEASE HELP WILL MARK BRAINLIEST
riadik2000 [5.3K]

Answer:

a) 7,10,13,16,     34

b) -1,3,7,11,        35

3 0
3 years ago
Read 2 more answers
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