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3 years ago

13

What is the simplified expression of (2 + 4) + (8 - 2) =

2 answers:

Aleonysh [2.5K]3 years ago

8 0

Answer:

12

Step-by-step explanation:

2+4=6

8-2=6

6+6=12

ankoles [38]3 years ago

6 0

(2+4) + (8-2) = 6 + 6 = 12

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Kyra observed that 85% of the students at a library liked reading mystery stories. If 30 students at the library did not like re

UkoKoshka [18]

It is said that 85% of the students liked reading mystery stories. This means the remaining 15% don't like to read these stories. If there are 30 students belonging to the second category, then the number of students who liked reading mystery stories is (30/0.15)*0.85 equal to 170 students out of 200 students.

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2 years ago

Find the conjugate and product of<br><br>2-i5

WITCHER [35]

Answer: $2+i5,\ 29$

Step-by-step explanation:

Given

Complex number is $2-i5$

Its conjugate is obtained by changing the sign of the original number i.e. $2+i5$

The product of the two numbers is

$\Rightarrow (2-i5)(2+i5)=2^2-(5i)^2\quad \quad [(x+y)(x-y)=x^2-y^2]\\\\\Rightarrow (2-i5)(2+i5)=4-25i^2\\\\\Rightarrow (2-i5)(2+i5)=4+25=29$

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3 years ago

Gravitational force acts on all object in proportion to their masses. Why then, a heavy object does not fall faster than a light

nordsb [41]

Because force= acceleration x mass Acceleration is constant for a body of any mass since force is exactly proportional to mass.

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2 years ago

Read 2 more answers

There are eight students in a class. Only one of them has passed Exam P/1 and only one of them has passed Exam FM/2. No student

Svetach [21]

Answer: There is probability of 0.57 chances that exactly three students from a group of four students have not passed Exam P/1 or Exam FM/2.

Step-by-step explanation:

Total number of students = 8

Number of student who has passed Exam P/1 = 1

Number of student who has passed Exam FM/2 = 1

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3 years ago

If y=80,when x=32 find x when y=100

Bess [88]

Y X
80 32
100 x'

80x' = 100*32
80x' = 3200
x' = 3200/80
x' = 320/8
x' = 40

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3 years ago