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lara [203]
3 years ago
13

Solve these 3 quadratic equations

Mathematics
1 answer:
Studentka2010 [4]3 years ago
4 0

Answer:

follow me

Step-by-step explanation:

enjoy your now nice study

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The circumference of a circle is 60 pi cm. What is the radius of the circle?​
Artyom0805 [142]

Answer:

30/pi cm

Step-by-step explanation:

2×pi×r =60

r = 60/2×pi =30/pi

4 0
3 years ago
The mathematics department at a community college collected data for the number of students enrolled in 40 math classes over the
Colt1911 [192]

Answer:

D.

Step-by-step explanation:

6 0
3 years ago
Colin and amil Each built boxes with a volume of 8 ft.³ Collins box is a cube almils box is a rectangular prism the length of am
SOVA2 [1]

Answer:

4' x 2' x 1'

Step-by-step explanation:

Collins' cube has a volume of that is the length of any side, x, cubed:  Vol = x^3.  Since his box has 8^3, we can say that x = 2.  <u>[2^3 = 8]</u>

Amil's box has one side that is 2x.  That side would be 2*2 = 4 feet.  His volume is also 8 ft^3.  Amil's box also has a volume of 8 ft^3.

His box dimensions are therefore:  (4)(X)(Y) = 8 ft^3 , where X and Y are whole-number dimensions for the other 2 dimensions of his box.

(4)(X)(Y) = 8 ft^3

      X*Y = 2

The only combination of whole numbers for which this this would work is 1 and 2.

Amil's box is 4' x 2' x 1' or 8 ft^3

3 0
2 years ago
8. Let f(x) = 3x + 2 and g(x) = x - 3. Find f(x) - g(x) and state its domain.
Dvinal [7]
F(x) - g(x)
becomes
(3x + 2) - (x - 3)

which is
3x + 2 - x + 3

then add like terms
2x + 5

so f(x) - g(x) = 2x + 5
and it's domain should be all real numbers
7 0
2 years ago
Solve these equations.<br> 1. -16 = v - 14<br> 2. -2n = -22<br> 3. 25 = b + 7
leonid [27]

1) -16 = v - 14

Add 14 to both sides.

v = -2

2) -2n = -22

Divide both sides by -2.

n = 11

3) 25 = b + 7

Subtract 7 from both sides.

b = 18

6 0
3 years ago
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