The mass of a radioactive element at time x is given by the equation below, where c is the original mass and h is the half-life of the element. The half-life of a substance is 4.9 years. How long will it take for 36 grams to decay to 10 grams? (Round your answer to one decimal place.)
M(x)=c(.5^x/h)
Simone paid $12 for an initial years subscription to a magizine. The renewal rate is $8 per year. This situation can be represented by the equation y=8x+12, where x represents the number of years the subscription is renewed and y represents the total cost.
The table shows the solution for the linear equation.
What is linear equation?"An equation that has the highest degree of 1 is known as a linear equation. This means that no variable in a linear equation has an exponent more than 1. The graph of a linear equation always forms a straight line".
For the given situation,
Cost for initial year subscription = $12
Cost for renewal = $8
The number of years the subscription is renewed be 'x' and
The total cost be 'y'.
This situation can be represented by the equation y = 8x+12.
For this linear equation, we need to make table by substituting different values of x to get y.
For [tex]x=1[/tex]
⇒[tex]y=8(1)+12[/tex]
⇒[tex]y=20[/tex]
For [tex]x=2[/tex]
⇒[tex]y=28[/tex]
For [tex]x=3[/tex]
⇒[tex]y=36[/tex]
For [tex]x=4[/tex]
⇒[tex]y=44[/tex]
For [tex]x=5[/tex]
⇒[tex]y=52[/tex]
The table below shows these interpretations.
Hence we can conclude that the table shows the solution for the linear equation.
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G write the equation in spherical coordinates. (a) 7z2 = 8x2 + 8y2
Answer:
[tex]\displaystyle 7 \cos^2 \phi - 8 \sin^2 \phi = 0[/tex]
General Formulas and Concepts:
Multivariable Calculus
Spherical Coordinate Conversions:
[tex]\displaystyle r = \rho \sin \phi[/tex][tex]\displaystyle x = \rho \sin \phi \cos \theta[/tex][tex]\displaystyle z = \rho \cos \phi[/tex][tex]\displaystyle y = \rho \sin \phi \sin \theta[/tex][tex]\displaystyle \rho = \sqrt{x^2 + y^2 + z^2}[/tex]Step-by-step explanation:
Step 1: Define
Identify.
[tex]\displaystyle 7z^2 = 8x^2 + 8y^2[/tex]
Step 2: Convert
[Equation] Substitute in Spherical Coordinate Conversions:∴ we have found the given equation in terms of spherical coordinates.
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Topic: Multivariable Calculus
Unit: Triple Integrals Applications
4/25, 13%, 0.28, 7%, 21/100, 0.15 least to greatest
Divide m2n2/p3 by mp/n2 .
Answer:
The answer is 'm'.
Step-by-step explanation:
Here, the given expression,
[tex]\frac{\frac{m^2n^2}{p^3}}{\frac{mp}{n^2}}[/tex]
[tex]=\frac{m^2n^2\times n^2}{p^3\times mp}[/tex]
[tex]=\frac{m^2n^{2+2}}{p^{3+1}m}[/tex] ( [tex]a^m.a^n=a^{m+n}[/tex] )
[tex]=\frac{m^2p^4}{p^4m}[/tex]
[tex]=m^2p^4p^{-4}m^{-1}[/tex] ( [tex]a^{m}=\frac{1}{a^{-m}}[/tex] )
[tex]=m^{2-1}p^{4-4}[/tex]
[tex]=m^1p^0[/tex]
[tex]=m[/tex]
PLZ ANSWER I BEG U
An airplane flies to San Francisco from Los Angeles in 4 hours. It flies back in 3 hours. If the wind is blowing from the north at a velocity of 20 mph during both flights, what was the airspeed of the plane (its speed in still air)?
A retangular box is 2 cm high, 4 cm wide and 6 cm deep. M packs the box with cubes, each 2 cm by 2 cm by 2 cm with no space left over . How many cubes fit in the box?
[tex]r \frac{8}{11} r \frac{10}{11} [/tex] Simplify. Write your answer using a single, positive rational exponent
find the area of the figure (sides meet at right angles)
What is the 4th term of the sequence?
a1 = 8 and an = 6 + an – 1
a4 =
Which choice is the GCF and LCM of 24 and 48? A) GCF = 12, LCM = 12 B) GCF = 24, LCM = 48 C) GCF = 12, LCM = 24 D) GCF = 12, LCM = 48 PLZ HELP FAST
the quotient of a number and three is equal to negative eight
Can someone help me with this question?
State the Pythagorean Theorem and tell how you can use it to solve problems
f (x) = x5 − 8x4 + 21x3 − 12x2 − 22x + 20 Three roots of this polynomial function are −1, 1, and 3 + i. Which of the following describes the number and nature of all the roots of this function?
f (x) has two real roots and one imaginary root.
f (x) has three real roots.
f (x) has five real roots.
f (x) has three real roots and two imaginary roots.
Answer:
It's D on edge.
The f(x) has three real roots and two imaginary roots option (D) is correct.
What is polynomial?Polynomial is the combination of variables and constants systematically with "n" number of power in ascending or descending order.
[tex]\rm a_1x+a_2x^2+a_3x^3+a_4x^4..........a_nx^n[/tex]
We have a polynomial:
f(x) = x⁵ − 8x⁴ + 21x³ − 12x² − 22x + 20
The three roots of this polynomial function are −1, 1, and 3 + i.
We can write the function in a factored form:
f(x) = (x - 1)(x⁴ - 7x³ + 14x² +2x - 20)
Again factoring the above polynomial:
f(x) = (x - 1)(x + 1)(x - 2)(x² -6x + 10)
The roots of the polynomial are
x - 1 = 0
x = 1
x + 1 = 0
x = -1
x - 2 = 0
x = 2
x² - 6x + 10 = 0
The above quadratic equation has two complex roots.
x = 3 + i
x = 3 - i
Thus, the f(x) has three real roots and two imaginary roots option (D) is correct.
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____ provides a greater degree of security by implementing port-based authentication. ieee 802.3ad ieee 802.11n ieee 802.1x ieee 802.1z
A right triangle has a hypotenuse of length 20 cm and another side of length 16 cm. what is the length of the third side of the triangle?
Which equations have a greater unit rate than the rate represented in the table?
Choose more than one
x y
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3 2
6 4
9 6
A. y=5/7x
B. y=3/5x
C. y=1/3x
D. y=7/9x
E. y= 7/11x
(a) y=5/7x and (d) y=7/9x have a greater unit rate than the rate represented in the table.
What is slope intercept form?y=mx+c is the slope intercept form where m is the slope and c is y intercept.
The given table is
x 3 6 9
y 2 4 6
The formula to calculate slope is m =y₂-y₁/x₂-x₁
(3,2 ) and (6, 4) are two points.
x₁=3, y₁=2 , x₂=6 and y₂=4
m=4-2/6-3
m=2/3.
Now let us check the equation with greatest slope
(a) y=5/7x
5/7 > 2/3
(b) y=3/5x
3/5 < 2/3
(c) y=1/3x
1/3 < 2/3
(d) y=7/9x
7/9 > 2/3
(e) y= 7/11x
7/11< 2/3
Hence (a) y=5/7x and (d) y=7/9x have a greater unit rate than the rate represented in the table.
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What percent of 43.75 is 70
simplify the expression 2x - 4 + 3x
Compute r6r6, l6l6, and m3m3 to estimate the distance traveled over [0, 3] if the velocity at half-second intervals is as follows:
For R6 and L6, t= (3- 0) / 6= 0.5. For M3, t= (3- 0)/ 3 = 1. Then
For R6 we will add all the velocity given from 12 to 20 and then multiply it by 0.5 seconds
R6 = 0.5 s ( 12 + 18 + 25 + 20 + 14 + 20 ) m/ sec = 0.5 (109) m = 54.5 m,
For L6 we will add all the velocity given from 0 to 14 and then multiply it by 00.5 as well.
L6 = 0.5 sec ( 0 + 12 + 18 + 25 + 20 + 14 ) m/ sec = 0.5 (89 ) m = 44.5 m.
For M3:
M3 = 1 sec (12 + 25 + 14) m/ sec = 51 m.
The question relates to integral calculus and the concept of Riemann sum approximation. The values r6r6, l6l6, and m3m3 need to be calculated given they represent velocities at half-second intervals. The estimated distance travelled would be the sum of these velocities multiplied by their respective time intervals.
Explanation:The task here is to compute the expressions r6r6, l6l6, and m3m3, and use those to estimate the distance traveled over the interval [0,3], if the velocity changes at half-second intervals. From the details, it is indicative this is a problem involving the mathematical concept of integral calculus, specifically the area under velocity-time curve. The overall distance travelled is given by the area under the curve which is the integral of the velocity function over the given interval.
Let's suppose the values r6r6, l6l6, and m3m3 represent velocities at different half-second intervals of time. In order to estimate the total distance travelled, you would need to sum these velocities and multiply by the duration of each interval (0.5 seconds). This concept is also known as Riemann sum approximation in integral calculus.
For example, if r6r6 = 10 m/s, l6l6 = 12 m/s, and m3m3 = 8 m/s, the estimated total distance travelled would be calculated as (10*0.5 + 12*0.5 + 8*0.5) = 5 m + 6 m + 4 m = 15 m.
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In bowling you get a spare when you knock down the ten pins in two throws how many possible ways are there to get a spare
Answer:
6
Step-by-step explanation:
or more
The veterinarian weighed Oliver’s new puppy, Boaz, on a defective scale. He weighed 46 pounds. However, Boaz weighs exactly 44.5 pounds. What is the percent of error in measurement of the defective scale to the nearest tenth?
explain...................
Payout Annuities:
1. You want to be able to withdraw $30,000 from your account each year for 15 years after you retire.
You expect to retire in 30 years.
If your account earns 5% interest, how much will you need to deposit each year until retirement to achieve your retirement goals?
To achieve your retirement goals of withdrawing $30,000 per year for 15 years, you will need to deposit approximately $121,200 each year until retirement.
Explanation:To determine how much you need to deposit each year until retirement, you can use the formula for the present value of an annuity. The formula is:
PV = PMT x ((1 - (1 + r)^-n) / r)
Where:
In this case, the annuity payment amount is $30,000, the interest rate is 5%, and the number of periods is 15 years. Plugging these values into the formula:
PV = $30,000 x ((1 - (1 + 0.05)^-15) / 0.05)
Simplifying the equation:
PV = $30,000 x ((1 - 1.798) / 0.05)
PV = $30,000 x (0.202 / 0.05)
PV = $30,000 x 4.04
PV = $121,200
Therefore, you will need to deposit approximately $121,200 each year until retirement to achieve your retirement goals.
Irving spent the day shopping and made the following purchases: Item Cost ($) Novel 8.75 Shirt 21.66 Lunch 9.13 Potted plant 16.89 When Irving was done, he checked his account balance and found he had a total of $95.06. How much money was in Irving’s account to begin with? a. $56.43 b. $151.49 c. $38.63 d. $142.36
Solution:
Amount spent by Irving:
Item cost($)
Novel 8.75
Shirt 21.66
Lunch 9.13
Potted plant 16.89
Total money spent = $56.43.
Amount of money In Irving account= $95.06.
Amount of money was in Irving’s account to begin with =$56.43+$95.06=$151.49.
Answer:$151.49.
In how many ways can 3 boys and 3 girls sit in a row if the boys and girls are each to sit together?
The boys and girls are each to sit together, and there are 3 boys and 3 girls. The total number of ways to arrange them is 36.
Explanation:The boys and girls are each to sit together, meaning that the boys should sit together in one group and the girls should sit together in another group. We can consider these two groups as two separate entities.
The number of ways to arrange the boys within their group is 3! (3 factorial), because there are 3 boys. Similarly, the number of ways to arrange the girls within their group is also 3!. Since these two groups can be arranged independently of each other, the total number of ways to arrange the boys and girls is 3! * 3! = 6 * 6 = 36.
For problems 2-3: data were collected on the contents of 1-kilogram sugar packets of brands 1 and 2. assume contents are normally distributed. let and be the true average and standard deviation of contents for brand ( = 1, 2). data summaries are given below. data summary brand 1: = 16, ̅ = 1.053, = 0.058 brand 2: = 16, ̅ = 1.071, = 0.062 2. we would like to determine if there is evidence that brand 1 has a lower average content that brand 2. what hypothesis test will we conduct?
a. : − = 0 versus : − ≠ 0
b. : − = 0 versus : − > 0
c. : − < 0 versus : − = 0
d. : − = 0 versus : − < 0 3. what is the value of the test statistic for testing : = ?
a. 0.9355
b. 0.8751
c. −0.018
d. −0.848
Find (3 × 104) − (5 × 102).
Which measure of central location is meaningful when the data are categorical?
a. the range
b. the mean
c. the median
d. the mode?
The average annual income I in dollars of a lawyer with an age of x years is modeled with the following function I=425x^2+45,500x-650,000