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Sedbober [7]
2 years ago
15

Evaluate the expression -2cd if a = -8 b = 2 c = -5 d = 6

Mathematics
1 answer:
Elza [17]2 years ago
5 0

Answer:

60

Step-by-step explanation:

Replace c and d with -5 and 6.

-2*-5*6

-2*-5=10

10*6=60

The expression is equal to 60.

-hope it helps

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What fraction is equivalent to -0.06
Karolina [17]

So the answer is -3/50 because -0.06 is equal to -6/100 and that simplified is -3/50.


6 0
3 years ago
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Mr. Toney gets his car washed every 15 days. Mr. Brown gets his car washed every 20 days. Today, they are both getting their car
Zinaida [17]
They both get their cars washed on every 60th day.


You can solve this equation by finding the lcm (least common multiple):

15 30 45 60 75 90 105

20 40 60 80 100

The lowest common multiple is 60 as it is the first multiple the two have in common.

So, in sixty days, they’ll both get their car washed again

6 0
1 year ago
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the perimeter of the floor of a room is 18 metre and its height is 3 cm what is the area of 4 walls of the room​
Lina20 [59]

Note: The height of the room must be 3 m instead of 3 cm because 3 cm is too small and it cannot be the height of a room.

Given:

Perimeter of the floor of a room = 18 metre

Height of the room = 3 metre

To find:

The area of 4 walls of the room.

Solution:

We know that, the area of 4 walls of the room is the curved surface area of the cuboid room.

The curved surface area of the cuboid is

C.S.A.=2h(l+b)

Where, h is height, l is length and b is breadth.

Perimeter of the rectangular base is 2(l+b). So,

C.S.A.=\text{Perimeter of the base} \times h

Putting the given values, we get

C.S.A.=18\times 3

C.S.A.=54

Therefore, the area of 4 walls of the room is 54 sq. metres.

7 0
3 years ago
A proportion is shown. 24/x= 3/0.5 What is the value of x?
Anni [7]

Answer:

x=4

Step-by-step explanation:

5 0
3 years ago
Can someone help me out with this question?
goblinko [34]

Answer:

The third option

Step-by-step explanation:

The third option represents 65 over 100, meaning 65% of whatever of it would the 65% of 90 be

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3 years ago
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