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enot [183]
3 years ago
9

Which two perfect squares should be used to estimate ?

Mathematics
1 answer:
-Dominant- [34]3 years ago
6 0

Answer:

i think ur answer is a im not 100 percent sure let me know if im wrong

Step-by-step explanation:


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Let the function f be defined as f(x)= 5x^2 - 7(4x+3). What is the value of f(3)
Katen [24]

Answer:

f(x) = -60 is your answer

Step-by-step explanation:

Plug in 3 for x

f(x) = 5x² - 7(4x + 3)

f(x) = 5(3²) - 7(4(3) + 3)

Follow PEMDAS. First, solve the parenthesis

3² = 9

4(3) + 3 = 12 + 3 = 15

f(x) = 5(9) - 7(15)

Multiply

f(x) = 45 - 105

Simplify. Subtract

f(x) = 45 - 105

f(x) = -60

f(x) = -60 is your answer

~

4 0
3 years ago
Emily is entering a bicycle race for charity. Her mother pledges $0.70 for every 0.5 mile she bikes. If Emily bikes 10 miles, ho
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Answer:

Emily's mother will donate $20

Step-by-step explanation:

0.5x20=10

7 0
3 years ago
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Solve the simulateous equation 3x-4y=18 , 9x+2y=12
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The external angle of a regular polygon is 200 . How many sides does it have ? What is the measure of each interior angle? What
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An 18 sided shape.

Since the sum of the exterior angles of a polygon is 360° and an angle of the regular polygon is 20°, then 360° / 20° is the number of sides. We find the answer = 18, an octadecagon

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3 years ago
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