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Makovka662 [10]
2 years ago
8

Which expression is equivalent to 3a+9a+7b-b

Mathematics
1 answer:
LuckyWell [14K]2 years ago
3 0

Answer:

12a+6b

Step-by-step explanation:

3a+9a+7b-b

Combine like terms

3a+9a    +7b-b

12a         +6b

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What is the area and perimeter for these two shapes?
Lubov Fominskaja [6]
A:
Area: 289 m
Perimeter: 51 m

B:
Area: 4 m
Perimeter: 8 m
5 0
2 years ago
How much times can 6 go into 48
DENIUS [597]
6 can go into 48 8 times. How I figured out?
Start multiplying from a small number like
6×6= 36
6×7=42
6×8= 48
until you see your number 48, or a number that is lower that 48, but can not go any higher than 48.
6 0
3 years ago
Which function models the area of a rectangle with side lengths of 2x - 4 units and x + 1 units?
aalyn [17]

Answer:

Area of rectangle, f(x)=2x^2-2x-4.

Step-by-step explanation:

We are given with side lengths of a rectangle are (2x-4) units and (x+1) units. It is required to find the area of rectangle.

The area of a rectangle is equal to the product of its length and breadth. It is given by :

A=L\times B

Let us consider, L = (2x-4) units and B = (x+1) units

Plugging the side lengths in above formula:

A=(2x-4)\times (x+1)

A=2x^2+2x-4x-4\\\\A=2x^2-2x-4

So, the function that models the area of a rectangle is f(x)=2x^2-2x-4.

5 0
3 years ago
Tickets to Disneyland used to cost $109. They have decided to increase the price by 41%. What is the new cost of disneyland tick
Yanka [14]

Answer:

the answer is $153.69

3 0
2 years ago
The exterior angles of a triangle are 3y0, 4y0 and 5y0.
katovenus [111]

Answer:

i. 30 degrees

ii. 30 degrees

Step-by-step explanation:

The exterior angles of a triangle always add up to 360 degrees. Using this, you can set up the following equation.

3y+4y+5y=360

y=30 degrees

The smallest interior angle corresponds to the largest exterior angle. 5y=5*30= 150. Subtracting this from 180 you get 30 degrees, or the smallest interior angle. Hope this helps!

3 0
3 years ago
Read 2 more answers
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