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HACTEHA [7]
3 years ago
11

The function c ( x ) = 63 ⋅ ( 1.03 ) x models the cost in dollars, c , of 1 ounce of a certain chemical used in a laboratory. x

represents the number of years since 1990.
How much does an ounce of the chemical cost in 2005? (Do NOT type the $ with your answer.)
Mathematics
1 answer:
Fudgin [204]3 years ago
4 0

9514 1404 393

Answer:

  $98.15

Step-by-step explanation:

2005 is 15 years after 1990. Using the formula we find ...

  c(15) = 63·1.03^15 ≈ 63·1.55797

  c(15) ≈ 98.152

An ounce of the chemical costs about $98.15 in 2005.

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faust18 [17]
xy=176
y=x-5

\implies x(x-5)=176\implies x^2-5x-176=(x+11)(x-16)=0
\implies x=-11, x=16

Since x>0, we take x=16, which means y=16-5=11.
5 0
3 years ago
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8, 8, 8, 8, 8, 9, 9, 9, 9 would work as a sequence.


Median: 8

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3 years ago
If sin 21 = cos (5x+9) what is the value of x
n200080 [17]

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Hence x = 46 deg

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hope it helps

4 0
3 years ago
How to rewrite 3x4-1+2
igomit [66]
If you want to solve it the answer is 13...
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4 0
3 years ago
Sharma is building a shed and wants to determine the measurements for the roof. The span of the roof will be 10 feet and she pla
Stolb23 [73]

Answer:

In the figure below :

d = 2.08, e = 5, c = 5.42 , a = 22.78°, b = 67.22°

Step-by-step explanation:

Side lengths :

2\cdot e=10\\ \Rightarrow e=5 feet\\\frac{d}{e}=\frac{5}{12}\\\Rightarrow d=\frac{25}{12}\approx 2.08 feet

By pythagoras theorem,

c^2=d^2+e^2\\c^2=29.33\\c\approx 5.42 feet

Now to find angles,

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5 0
3 years ago
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