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2 years ago

The equation p=100-10t represents the percent p of battery power remaining in a cell phone after t hours

Mathematics

1 answer:

Fantom [35]2 years ago

7 0

Answer:

We have the equation:

P(t) = 100 - 10*t

where t is the number of hours.

at t = 0, we have:

P(0) = 100 - 0 = 100

so at the initial time, we have 100% of the battery power.

Now with this equation we can find the numbers of hours that we have left in our phone, this is finding the time t at which the power left is equal to zero:

P(t) = 0 = 100 - 10*t

10*t = 100

t = 100/10 = 10

So the battery power will last for 10 hours.

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Alex777 [14]

Answer: THE ANSWER IS A

Step-by-step explanation:

5-(3/2)^3

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3 years ago

What is the area of the figure? A.234 in.^2 B.315 in.^2 C.225 in.^2 D.252 in.^2

saul85 [17]

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2 years ago

Anyone know this geometry question?

andre [41]

Option D should be your answer.

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2 years ago

Use two rectangles of equal width to estimate the area between the graph of f(x) = x + cos(πx) and the x-axis on the interval [2

MrRissso [65]

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Base of rectangle = (6 - 2) / 2
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The area the second triangle:

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Now just compute the two areas and combined them. That will give you the estimated under the curve.

To evaluate the midpoint of each rectangle, we take the midpoint of the base lengths of each rectangle. This midpoint is the x value. Then evaluate the function at that x value.

The midpoint of the first rectangle is x=3. Evaluate f(3).
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2 years ago

What is the value of x to the nearest tenth?

Colt1911 [192]

Answer:

C. 17.6

General Formulas and Concepts:

Math

Rounding

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Trigonometry

[Right Triangles Only] SOHCAHTOA
[Right Triangles Only] tanθ = opposite over adjacent

Step-by-step explanation:

Step 1: Identify Variables

Angle θ = 40°

Opposite Leg = x

Adjacent Leg = 21

Step 2: Solve for x

Substitute in variables [tangent]: $\displaystyle tan(40^\circ) = \frac{x}{21}$
[Multiplication Property of Equality] Isolate x: $\displaystyle 21tan(40^\circ) = x$
Rewrite: $\displaystyle x = 21tan(40^\circ)$
Evaluate: $\displaystyle x = 17.6211$
Round: $\displaystyle x \approx 17.6$

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1 year ago

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