All categories

2 years ago

Help mee plz... i ' m in troubleans 2,3&4

Mathematics

1 answer:

motikmotik2 years ago

5 0

Step-by-step explanation:

2) a= -3/8 and b= -5/3

a×b= b×a

-3 × -5 = -5 × -3

8. 3. 3. 8

15 = 15

24. 24

3)a=8/11 and b= -6/11

a×b=b×a

8 × -6 = -6 × 8

11. 11. 11. 11

-48 = -48

121. 121

4) a= -9/15 and b= -7/2

a×b=b×a

-9 × -7 = -7 × -9

15. 2. 2. 15

63 = 63 , let's divide both by 3

30. 30

21 = 21

10. 10

You might be interested in

Find the missing number so that the equation has infinitely many solution

Masja [62]

Answer:

Step-by-step explanation:

-4x+8+2x

2x+8

compare both sides

2x+__= 2x+8

it is 8

3 0

2 years ago

Read 2 more answers

A sculpture is in the shape of a cylinder. The sculpture has a diameter of 10 feet and a height of 21 feet. Which measurement is

bazaltina [42]

Answer:did u get the answer?

Step-by-step explanation:sorry

4 0

2 years ago

What ratio is equivalent to the ratio 14:7 A 1:7 B2:7 C2:1

svp [43]

Answer:

c 2:1

Step-by-step explanation:

If you simplify 14:7 it is 2:1 (divide by 7)

5 0

2 years ago

Read 2 more answers

How do you choose between mean and median as the best measure for the center of a distribution?

OverLord2011 [107]

That would be the median I think...

7 0

2 years ago

A firm offers routine physical examinations as part of a health service program for its employees. The exams showed that 8% of t

Alexxandr [17]

Answer: A. 0.20

Step-by-step explanation:

Let A be the event of employees needed corrective shoes and B be the event that they needed major dental work .

We are given that : $P(A)=0.08\ ;\ P(B)=0.15\ ;\ P(A\cap B)=0.03$

We know that $P(A\cup B)=P(A)+P(B)-P(A\cap B)$

Then, $P(A\cup B)=0.08+0.15-0.03= 0.20$

Hence, the probability that an employee selected at random will need either corrective shoes or major dental work : $P(A\cup B)= 0.20$

hence, the correct option is (A).

6 0

3 years ago