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Romashka-Z-Leto [24]
3 years ago
5

What is the constant in this algebraic expression? 7d+2 I need help

Mathematics
1 answer:
snow_lady [41]3 years ago
6 0
It is 2 because no variable
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Point F is on circle C. What is the length of line segment GF?
Levart [38]
The answer:
the full question is as follow:
<span>Point F is on circle C. What is the length of line segment GF?

12.5  units
15.0  units
17.5  units
20.0  units

according to the image, GF= GC + CF

CF is the radius of the circle, so it is CF =CE = 7.5
all that we want to find is the value of GC
let's consider the triangle GEC. This is a right triangle, so for finding GC, we can apply Pythagorean theorem

that is, GE² + EC² = GC², and from this, we have GC = sqrt(</span>GE² + EC² )

GC = sqrt(10² + 7.5² )=sqrt(56.25)=12.5
<span>
therefore, </span>GF= GC + CF=12.5 + 7.5 = 20.0
the answer is 20.0  units

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3 years ago
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Convert 12 7/12 to a common number
o-na [289]
As a decimal it is 0.58
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PLZ HElp!! Solve the inequality. –6 &lt; 2x – 4 &lt; 4
nekit [7.7K]

Answer:

- 1 < x < 4

Step-by-step explanation:

- 6 < 2x - 4 < 4 \\  - 6 + 4 < 2x < 4 + 4 \\  - 2 < 2x < 8 \\  \frac{ - 2}{2}  < x <  \frac{8}{2}  \\  \purple{ \boxed{ \bold{ - 1 < x < 4}}}

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2 years ago
Pls solve: 6 - 2/9x = 8
Inga [223]

Answer:

x = -9

Step-by-step explanation:

6 - 2/9x = 8

Subtract 6 from each side

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Multiply each side by -9/2 to isolate x

-9/2 * -2/9x = 2*-9/2

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5 0
3 years ago
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how many kilograms of pure water is to be added to 100 kilograms of a 30% saline solution to make it a 10% saline solution
Irina-Kira [14]

Answer:

  200 kg

Step-by-step explanation:

If w is the amount of water added, then the concentration of the solution is ...

  salt/solute = 100(0.30)/(100 +w) = 0.10

  30 = 10 +0.10w . . . . . simplify

  20 = 0.10w . . . . . . . . subtract 10

  20/0.10 = w = 200 . . . . divide by 0.10

200 kg of water must be added to dilute the solution to 10%.

4 0
2 years ago
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