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alekssr [168]
3 years ago
11

WORTH 40 POINTS!

Mathematics
2 answers:
Dovator [93]3 years ago
7 0

Answer:

1.3 × 1011

Step-by-step explanation:


saul85 [17]3 years ago
3 0

Answer:

4 to the power of 3, square root of 40, square root of 13, square root of 7, 14 over 9

Step-by-step explanation:

i took the test

it's the other way around.

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What is the x-coordinate of the solution of the following system of equations?
Varvara68 [4.7K]

The easiest way to solve this is by elimination. 

3x - y = 6 

6x + y = 21

Since you have a negative and positive y with the same coefficients (1), they cancel, and you add the other terms so it would look like:

9x = 27 

Then solving for x leaves you with x = 3 

Then you take the x value of three and plug it into to either of the equations, so 

3(3) - y = 6

9 - y = 6 

subtracting 9 

-y = -3 

then dividing by -1 

y = 3 

so the solution is x = 3 y = 3 or (3,3)

8 0
3 years ago
If 5 + 6i is a root of the polynomial function f(x), which of the following must also be a root of f(x)? –5 – 6i 5 – 6i 6 – 5i 6
san4es73 [151]

Answer: 5-6i

The rule is that if f(x) has real number coefficients, then a root of x = a+bi pairs up with its conjugate pair of x = a - bi. In this case, a = 5 and b = 6.

4 0
3 years ago
Read 2 more answers
PLEASE HELP WILL GIVE BRAINLIEST
Mars2501 [29]

Answer:

f(-2)=4+6+2

f(-2)=12

Step-by-step explanation:

Add -2 where all the x values are then solve

4 0
3 years ago
If one inch represents 5 feet, what dimensions would you use to make a scale drawing of a building 30 feet by 65 feet?
iogann1982 [59]

Answer:

30×5=150 feet and for 65 feet 65×5 = 325

3 0
3 years ago
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A fence is put around a rectangular flower bed. The flower bed is 12 feet wide and 16 feet long. What is the total length of the
Studentka2010 [4]
The total length (or perimeter) 56 feet. The equation is 12 + 12 + 16 + 16 = 56.
6 0
3 years ago
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