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Roman55 [17]
3 years ago
12

Noah says that 9X minus 2X plus 4X is equivalent to 3X because the subtraction sign tells us to subtract everything that comes a

fter 9X
Mathematics
1 answer:
lesantik [10]3 years ago
8 0

Answer:

False

Step-by-step explanation:

It is given that Noah thinks :

9x - 2x + 4x = 3x   as the subtraction sign after 9x tells us to subtract everything that comes after 9x.

This is wrong as according to the BODMAS rule, we have to do the addition operation first and then followed by subtraction operation.

That is

⇒ 9x - 2x + 4x

⇒ (9x -2x)+ 4x

⇒ 7x + 4x

⇒ 11x

Therefore the answer to the equation is 11x and not 3x.

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aleksandrvk [35]
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3 0
3 years ago
Find the volume of a prism with a base of 153 square feet and a height of 7 feet.
kakasveta [241]

Answer: 1,071

Step-by-step explanation:

7 0
2 years ago
the side length ofthe square porch behind macis house is (3x + 2) feet. The porch has a perimeter of (14x - 2) feet. What are th
andriy [413]

Answer:

The porch is 17 ft by 17 ft

Step-by-step explanation:

The perimeter of a square is

P = 4s where s is the side length

P = 4( 3x+2)

P = 12x+8

We know P = 14x-2

14x-2 = 12x+8

Subtract 12x from each side

14x-2 -12x = 12x+8-12x

2x -2 = 8

Add 2 to each side

2x-2 +2 = 8+2

2x= 10

Divide by 2

2x/2 = 10/2

x = 5

The side  is 3x+2

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                   17

The porch is 17 ft by 17 ft

5 0
3 years ago
A number is chosen at random from the integers 10 to 30 inclusive. Find the probability that the number is a multiple of 3.
kirill [66]

Answer:

For each part, find how many numbers have the stated characteristic, then divide by 21.

e.g. multiples of 5:

these would be 10, 15, 20, 25, and 30

so prob (a multiple of 5 ) = 5/21

Do the others the same way

8 0
3 years ago
Read 2 more answers
What is the area of the triangle? 20 16 12 heh sorry !!!!!!​
Delvig [45]

Answer:

96 units^2

Step-by-step explanation:

The formula for the area of a triangle: b*h/2

b= 12

h= 16

Work:

12*16/2

192/2

96 uints^2

6 0
3 years ago
Read 2 more answers
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