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solmaris [256]
3 years ago
7

F(x) = 14 - 0.52 f(30)

Mathematics
1 answer:
olga_2 [115]3 years ago
3 0

Steps to solve:

f(x) = 14 - 0.5x when x = 30

~Substitute

f(30) = 14 - 0.5(30)

~Simplify

f(30) = 14 - 15

~Subtract

f(30) = -1

Best of Luck!

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A student rounds a number to 12.9. Which of the following is a possible value of the original number?
LekaFEV [45]

Answer:

12.85, 12.86, 12.87, 12.88, 12.89, 12.90, 12.91, 12.92, 12.93, and 12.94

Step-by-step explanation:

there is none

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3 years ago
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Dima020 [189]

Answer:

7/9

Step-by-step explanation:

this equation is true:

21/27 = 7/9

If the numerator is greater than or equal to the denominator of a fraction, then it is called an improper fraction. In that case, you could convert it into a whole number or mixed number fraction.

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3 years ago
If <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%2B3%7D%7B4%7D" id="TexFormula1" title="\frac{x+3}{4}" alt="\frac{x+3}{4}" align
AleksAgata [21]

Answer:

f^{-1}(x) = 4x-3 is the right answer.

Step-by-step explanation:

I the function is f(x) = \frac{x+3}{4}

f(x)=\frac{1}{4}(x+3)

Then we have to find inverse of function f(x).

we will write the equation as y=\frac{1}{4}(x+3)

4y = x + 3

x = 4y - 3

Now we will rewrite the function as

f^{-1}(x) = 4x-3

So the answer is f^{-1}(x) = 4x-3

3 0
4 years ago
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Suppose A, R, and B are collinear on AB, and AR:AB= 1/5. What are the coordinates of R?
AfilCa [17]

Answer:

R(1.6, 0)

Step-by-step explanation:

Use the formula, (x, y) = (x_1 + k(x_2 - x_1), y_1 + k(y_2 - y_1)) to find the coordinates of point R, that partition the lie segment AB into the ratio 1/5.

Let,

A(1, -1) = (x_1, y_1)

B(4, 4) = (x_2, y_2)

Thus, plug in the values as follows:

R(x, y) = (1 + \frac{1}{5}(4 - 1), -1 + \frac{1}{5}(4 -(-1))

R(x, y) = (1 + \frac{1}{5}(3), -1 + \frac{1}{5}(4 + 1)

R(x, y) = (1 + \frac{1}{5}(3), -1 + \frac{1}{5}(5)

R(x, y) = (1 + \frac{3}{5}, -1 + \frac{5}{5})

R(x, y) = (\frac{5 + 3}{5}, -1 + 1)

R(x, y) = (\frac{8}{5}, 0)

R(x, y) = (1.6, 0)

The coordinates of point R, are (1.6, 0)

7 0
4 years ago
19.25 tons equal Lbs
laila [671]

Answer:

38500lbs

Step-by-step explanation:

2000 lbs is one tone

if we have 19.25 tons, we need to multiply 19.25x2000

The answer is 38500 lb

8 0
3 years ago
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