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Solnce55 [7]
2 years ago
8

Expand and simplify (2c+1)(2c+3)

Mathematics
1 answer:
Mandarinka [93]2 years ago
6 0
The answer would be 4c^2+8c+3

The arrow stands for squared off you didn’t already know but these are very easy to solve because you just multiply it out
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Please help and please say the formula!!
Damm [24]

Answer:

B

Step-by-step explanation:

Formula: 4*((15*7)/2) + 15^2

This is the area of the four triangles combined (210 cm^2) plus the area of the square (225 cm^2)

8 0
3 years ago
A rectangle has a width of 9 km and a length of 6 km. How does the area change when each dimension is multiplied by 3?
Gnom [1K]

For this case we have that by definition the area of a rectangle is given by:

A = wl

Where

  • <em>w: width of the rectangle </em>
  • <em>l: length of the rectangle </em>

The area of the original rectangle is given by:

A1 = (9) (6)\\A1 = 54

The area of the new rectangle is given by:

A2 = (3 * 9) (3 * 6)\\A2 = 9 * (9) (6)\\A2 = 9 * 54\\A2 = 9 * A1

Therefore, the original area increases with a factor of 9.

Anwer:

the original area increases by a factor of 9.

A2 = 9 * A1

5 0
3 years ago
Read 2 more answers
In the figure below, QRT and SRV are complementary,<br> What is the value of x?
V125BC [204]
\bold{ANSWER:}
x = 40

\bold{SOLUTION:}

6 0
3 years ago
The equation 750(1.03)4t=1,000 can be used to find the amount of time, t, in years, it takes for a savings account compounded qu
Aleksandr [31]

Answer:

Step-by-step explanation:

T=29.16

8 0
3 years ago
What's the estimate of 6.48 + 9.34?
Alex_Xolod [135]

Answer:

16

Step-by-step explanation:

6.48 + 9.34= 15.82 so when u round the number it 16 so the estimate is 16.

6 0
2 years ago
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