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Sergio
4 days ago
6

A store sold a case of scented candles for $17.85 that had been marked up 110%. What was the original price?

Mathematics
2 answers:
Zina [9.1K]4 days ago
5 0
1.1x = 17.85 x ≈ 16.227272727272727... Rounded to $16.23
tester [8.8K]4 days ago
4 0
110% can be written as 1.1. If you add 1, it equals 2.1. Therefore, when you divide 17.85 by 2.1, the result is 8.5, which means the original price was $8.50.
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Which graph represents an odd function?<br><br>Answer by using: A, B, C, or D for each graph.
AnnZ [9099]

Answer: Option C is the correct graph.

Explanation:

An odd function satisfies the condition,

f(-x)=-f(x)

This indicates that for any point (x,y) on the graph, the point (-x,-y) will also be present.

Why Option C is correct:

Option C includes the point (1,2), which implies the point (-1,-2) must be present.

f(1)=2

Indeed, (-1,-2) is among the points.

f(-1)=-f(1)=-2

Other pairs like (2,3) with (-2,-3), (3,-1) with (-3,1), and (4,0) with (-4,0) are also found. Hence, the function represented is odd.

Why other options are incorrect:

In Option A, (1,3) is given, so at x = -1, y should be -3, but instead y = 1, so it’s not odd.

Option B has (1,0), so at x = -1, y should be 0, but y = -3, so it is not odd.

Option D features (1,-1), meaning at x = -1 y should be 1; however, y = -1, so it's not odd.

6 0
1 month ago
Read 2 more answers
If m∠DEF = 117°, find the value of x
Svet_ta [9500]

Response:

x equals 7

Step-by-step breakdown:

Information:

∠DEF is 117°

∠DEG measures (12x + 1)°

∠GEF is (5x - 3)°

Objective:

determine the value of x

Calculation:

The equation is ∠DEF = ∠DEG + ∠GEF

117° = (12x + 1)° + (5x - 3)°

117° = 17x - 2

Thus, x = 7

4 0
1 month ago
On a certain day, the temperature changed at a rate of 3°F per hour. How long did it take for the change in temperature to be -3
zzz [9080]

Answer:

I believe it takes around 11 hours.

Step-by-step explanation:

Assuming the starting temperature is 0 degrees, I can conclude it takes 11 hours, as 11*3 = 33. If it starts at 3 degrees, it would be 3*12 = 36 degrees.

7 0
2 days ago
The dye dilution method is used to measure cardiac output with 3 mg of dye. The dye concentrations, in mg/L, are modeled by c(t)
lawyer [9240]

Answer:

Cardiac output:F=0.055 L\s

Step-by-step explanation:

Details: The cardiac output is assessed using the dye dilution technique with 3 mg of dye.

Goal: To determine the cardiac output value.

Solution:

Cardiac output formula:F=\frac{A}{\int\limits^T_0 {c(t)} \, dt} ---1

A = 3 mg

\int\limits^T_0 {c(t)} \, dt =\int\limits^{10}_0 {20te^{-0.06t}} \, dt

Utilize integration by parts

[\int{20te^{-0.6t}} \, dt]^{10}_0=[20t\int{e^{-0.6t} \,dt}-\int[\frac{d[20t]}{dt}\int {e^{-0.6t} \, dt]dt]^{10}_0

[\int{20te^{-0.6t}} \, dt]^{10}_0=[\frac{-20te^{-0.6t}}{0.6}+\frac{20}{0.6}\int {e^{-0.6t} \,dt]^{10}_0

[\int{20te^{-0.6t}} \, dt]^{10}_0=[\frac{-20te^{-0.6t}}{0.6}+\frac{20e^{-0.6t}}{(0.6)^2}]^{10}_{0}

[\int{20te^{-0.6t}} \, dt]^{10}_0=[\frac{-200e^{-6}}{0.6}+\frac{20e^{-6}}{(0.6)^2}]+\frac{20}{(0.60^2}

[\int{20te^{-0.6t}} \, dt]^{10}_0=\frac{20(1-e^{-6}}{(0.6)^2}-\frac{200e^{-6}}{0.6}

[\int{20te^{-0.6t}} \, dt]^{10}_0\sim {54.49}

Insert the value into 1

Cardiac output:F=\frac{3}{54.49}

Cardiac output:F=0.055 L\s

Consequently, Cardiac output:F=0.055 L\s

4 0
18 days ago
About ten percent of users do not close Windows properly. Suppose that Windows is installed in a public library that is used by
lawyer [9240]

Answer:

Refer to the explanation

Step-by-step explanation:

As approximately 10% of users fail to close Windows properly, we determine:

  • The likelihood that a user neglects to shut down Windows correctly is p=0.1;
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A. On average,

  • one in ten users does not close Windows correctly;
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B. The likelihood that precisely 8 out of the next 10 users will close Windows correctly is

C^{10}_8\cdot q^{8}p^{10-8}=\dfrac{10!}{8!(10-8)!}\cdot (0.9)^8\cdot (0.1)^2=45\cdot (0.9)^8\cdot (0.1)^2\approx 0.1937

6 0
1 month ago
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