Write the percent as a decimal and as a fraction.

215% (1 point)
2.15; 2 1/20
2.15; 2 3/20
21.5; 21,1/2
21.5; 21, 3/10
Just tell me what one what it is..

I'LL GIVE A MEDAL (:,

Final Answer:

The answers are:
1. B. 5.76 x 10¹⁴ miles
2. D. $15,494.70

Explanation:

Let's solve each of these questions step by step.
Question 1:
First, we'll calculate the distance to the star in miles, given its distance in light years.
One light year is approximately 5.88 x 10¹² miles.
The star is 9.8 x 10¹ light years from Earth.

To find the distance in miles, we multiply the distance in light years by the length of one light year in miles:
Distance in miles = (5.88 x 10¹² miles/light year) * (9.8 x 10¹ light years)

To multiply these numbers in scientific notation, we multiply the coefficients (5.88 and 9.8) and then add the exponents of 10 (12 and 1).
Coefficient multiplication: 5.88 * 9.8
Using a calculator or doing the multiplication by hand, we find that 5.88 * 9.8 is approximately 57.624.
Exponent addition: 12 + 1 = 13

So the distance in miles is approximately 57.624 x 10¹³ miles.

However, in scientific notation, the coefficient should be between 1 and 10. Therefore, we need to adjust the coefficient from 57.624 to 5.7624 and increase the exponent by 1 to keep the same value.
Distance in miles = 5.7624 x 10¹⁴ miles

To make it approximately and match the answer choices, we can round the coefficient to 5.76.
Distance in miles ≈ 5.76 x 10¹⁴ miles

The closest answer to our computed value is:
B. 5.76 x 10¹⁴ miles

Question 2:
Next, let's use the compound interest formula to find the balance in the account after 33 years.
The compound interest formula is:
[tex]A = P (1 + r/n)^{(nt)[/tex]
where:
A is the amount of money accumulated after n years, including interest.
P is the principal amount (the initial amount of money).
r is the annual interest rate (decimal).
n is the number of times that interest is compounded per year.
t is the time the money is invested for, in years.

We're given:
P = $1,600.00
r = 7% annual interest = 0.07 (as a decimal)
n = 2 (since interest is compounded semiannually)
t = 33 years

Plugging these values into the formula gives us:
[tex]A = 1600.00 * (1 + 0.07/2)^{(2*33)[/tex]
Let's break it down:

Interest rate per compounding period: 0.07/2 = 0.035
Number of compounding periods: 2*33 = 66

Now substitute these values:
A = 1600 * (1 + 0.035)⁶⁶

We calculate (1 + 0.035)^66 using a calculator:
(1 + 0.035)⁶⁶ ≈ (1.035)⁶⁶ ≈ 9.682

So the final balance is:
A ≈ 1600 * 9.682 ≈ 15491.2

The closest answer to our computed value is:
D. $15,494.70

Hence, the answers are:
1. B. 5.76 x 10¹⁴ miles
2. D. $15,494.70

When [tex]\( a \)[/tex] is negative in the equation [tex]\( y = ax^2 \)[/tex], the parabola opens downwards. So, the answer is (a).

To determine the direction in which the parabola described by the equation [tex]\( y = ax^2 \)[/tex] opens, we need to understand the properties of the quadratic function. Let's analyze this step by step:

1. Identify the general form of the equation:

  The given equation is [tex]\( y = ax^2 \)[/tex].

2. Determine the effect of the coefficient [tex]\( a \)[/tex] on the parabola:

  - If [tex]\( a \)[/tex] is positive, the parabola opens upwards.

  - If [tex]\( a \)[/tex] is negative, the parabola opens downwards.

3. Evaluate the given condition:

  The problem states that [tex]\( a \)[/tex] is negative.

4. Apply the condition to the quadratic equation:

  Since [tex]\( a \)[/tex] is negative, the coefficient of [tex]\( x^2 \)[/tex] in the equation [tex]\( y = ax^2 \)[/tex] is negative.

5. Conclusion:

  When [tex]\( a \)[/tex] is negative, the parabola opens downwards.

Therefore, the correct answer is:

a. down

The correct decimal that represents eighteen and eight hundredths is 18.08, with the '8' in the hundredths place following the whole number 18.

The decimal that shows eighteen and eight hundredths is 18.08. This is because the number 18 represents the whole part, and the decimal part .08 represents the hundredths place. To express this, we place a decimal point after the whole number 18, followed by two digits: the first digit after the decimal point for tenths (which is 0 in this case), and the second digit for hundredths, which is 8. Thus, the correct decimal representation would be 18.08, as opposed to 18.80 which shows eighty hundredths, or .1808 which implies a number less than one with eight hundredths and eight ten-thousandths.

A = Layer 4..................................................

Answer:

the answer is point S

~batmans wife dun dun dun...aka ~serenitybella

Answer:

Step-by-step explanation:

What is the measure of the central angle?

Answer : 140°

What ratio represents the measure of the central angle compared to the measure of the entire circle?

Answer7/18

If s = , what is the length of minor arc AB?

Answer : 14π

The correct equation for the relationship between the measures of the segments, angles, and arcs is [tex]PR^2[/tex] = PS * PT. The last option is the right choice.

Power of a Tangent: We know that the power of a point from an external point P to a circle is equal to the product of the lengths of the two tangents drawn from P to the circle (PQ * PR = PS * PT).

Identify the Tangents and Secant: In the given diagram, PR is the secant intersecting the circle at points T and S, and PQ and PS are the tangents drawn from P to points Q and S, respectively.

Apply the Power of a Tangent Theorem: Since PS and PT are tangents from P, we can apply the power of a tangent theorem to get:

PS * PT = PQ * PR.

Substitute PQ with PR: Since PQ and PR are both tangents drawn from the same point P, they have the same length (PQ = PR). Substituting PQ with PR in the equation, we get:

PS * PT = PR * PR.

Simplify the Equation: Simplifying the equation PR * PR = PS * PT, we get the final equation:

[tex]PR^2[/tex] = PS * PT.

Therefore, the equation [tex]PR^2[/tex] = PS * PT correctly represents the relationship between the measures of the segments, angles, and arcs in the given diagram.

The last option is the right choice.

Answer-

[tex]\boxed{\boxed{L=\dfrac{g}{4\pi^2 f^2}}}[/tex]

Solution-

The equation for time period of a simple pendulum is given by,

[tex]T=2\pi \sqrt{\dfrac{L}{g}}[/tex]

Where,

T = Time period,

L = Length of the rod,

g = Acceleration due to gravity.

Frequency (f) of the pendulum is the reciprocal of its period, i.e

[tex]f=\dfrac{1}{T}\ \Rightarrow T=\dfrac{1}{f}[/tex]

Putting the values,

[tex]\Rightarrow \dfrac{1}{f}=2\pi \sqrt{\dfrac{L}{g}}[/tex]

[tex]\Rightarrow (\dfrac{1}{f})^2=(2\pi \sqrt{\dfrac{L}{g}})^2[/tex]

[tex]\Rightarrow \dfrac{1}{f^2}=4\pi^2 \dfrac{L}{g}[/tex]

[tex]\Rightarrow L=\dfrac{g}{4\pi^2 f^2}[/tex]

The piecewise function representing Tracy's cell phone charges is C(m) = {29 if m ≤ 250, 29 + (0.35)(m - 250) if m > 250.}.

Based on Tracy's cell phone plan, we want to create a piecewise function that represents the charges based on her usage. She is offered 250 free minutes at a flat rate, and any additional minutes are billed at an additional rate per minute. This piecewise function will have two parts: one for when Tracy's usage is at or below 250 minutes, and another for when her usage exceeds 250 minutes.

The first part of the function accounts for the flat rate up to 250 minutes:

If m ≤ 250, then C(m) = 29.

The second part of the function accounts for additional charges past 250 minutes:

If m > 250, then C(m) = 29 + (m - 250) * 0.35.

Therefore, the piecewise function that represents Tracy's cell phone charges based on the minutes used (m) is:

C(m) = {
 29 if m ≤ 250,
 29 + (0.35)(m - 250) if m > 250.
}

The coefficient of the x-term in the slope-intercept equation of a line represents the slope. The slope indicates how the y-value changes with each one-unit increase of the x-value. The constant term 'b' is the y-intercept, the point where the line crosses the y-axis.

In the slope-intercept equation of a line, typically written as y = mx + b, the coefficient of the x-term gives the slope of the line. The slope, represented by the letter 'm', defines the steepness of the line, or how much the y-value changes for every one-unit increase in x. The y-intercept is given by the constant term 'b', which indicates the point where the line crosses the y-axis, occurring when x equals zero.

Slope is especially important in fields like economics as it measures the relationship between two variables. A positive slope means that as x increases, y also increases, and vice versa for a negative slope. Therefore, knowing the slope allows us to predict how one variable will change in response to the other.

[tex] 4*e^{2x} -3 = 12 [/tex]

Step 1:

Here we have -3 in subtraction on the left side, so when we take it to the right we apply opposite operation of subtraction that is addition.

[tex] 4*e^{2x} = 12+3 [/tex]

[tex] 4*e^{2x} = 15 [/tex]

Step 2:

Next we have 4 in multiplication on left side, so dividing right side by 4,

[tex] e^{2x} = 15/4 [/tex]

[tex] e^{2x} = 3.75 [/tex]

Step 3:

taking log on both sides

[tex] ln ( e^{2x}) = ln(3.75) [/tex]

[tex] {2x} =ln 3.75 [/tex]

Step 4:

Dividing right side by 2,

x= ln (3.75) /2 = 0.66088

Answer : x = 0.66088..

To calculate the time necessary for an investment to accrue a specific amount of interest, use the simple interest formula. For this question, it would take 6 years for a $1525 investment to earn $237.90 at a 2.6% interest rate.

To find the amount of time (t) needed for an investment to earn a certain amount of interest (I), we can use the simple interest formula: Interest = Principal x rate x time. Given that Interest ($237.90), Principal ($1525), and the annual nominal interest rate (2.6% or 0.026 as a decimal) are known, we can isolate time (t) and solve for it.

The formula with the given values is: $237.90 = $1525 x 0.026 x t.

To isolate t, we divide both sides by the product of the principal and the rate:

t = $237.90 / ($1525 x 0.026)

t = $237.90 / $39.65

t = 6 years

Therefore, it would take 6 years for the investment to earn $237.90 in interest at an annual rate of 2.6%.

Answer:

150

Step-by-step explanation: