Answer:
amy = 22 ben = 19
hope i helped!!!
Answer:
Year 3: Ben $10, Amy$13
Solve the following expressions. Write your answer in scientific notation. 13. (6.125×10 3
)×(2.345×10 4
) 14. (6.125×10 3
)×(2.345×10 −4
) 15. 3700.13×(6.04×10 4
) 16. (6.2×10 4
)/(0.4×10 −5
)
13) The scientific notation is 1.4354125 * 10⁸. 14) The scientific notation is 1.4354125 * 10⁻¹. 15) The scientific notation is 22366.0992. 16) The scientific notation is 1.55 * 10¹⁰.
Let's solve the given expressions and write the answers in scientific notation:
13) \((6.125*10^3) * (2.345*10^4)\)
To multiply the numbers in scientific notation, we multiply the coefficients and add the exponents:
\((6.125 * 2.345) * (10^3 * 10^4) = 14.354125 * 10^(3 + 4) = 14.354125 * 10^7 = 1.4354125 * 10^8\)
\(= 1.4354125 * 10^8\)
14) \((6.1258*10^3) * (2.345*10^{-4})\)
To multiply the numbers in scientific notation, we multiply the coefficients and add the exponents:
\((6.125 * 2.345) * (10^3 * 10^{-4}) = 14.354125 * 10^{3 - 4} = 14.354125 * 10^{-1} = 1.43541258* 10^{-1}\)
\(= 1.4354125 * 10^{-1}\)
15) \(3700.13 * (6.04*10^4)\)
To multiply a decimal number and a number in scientific notation, we simply multiply the decimal by the coefficient of the scientific notation:
3700.13 × 6.04 = 22366.0992
Since the answer does not need to be expressed in scientific notation, the result is 22366.0992.
= 22366.0992
16) \((6.2*10^4) / (0.4*10^{-5})\)
To divide numbers in scientific notation, we divide the coefficients and subtract the exponents:
\((6.2 / 0.4) * (10^4 / 10^{-5}) \\= 15.5 * 10^{4 - (-5}) \\= 15.5 * 10^9 \\= 1.55 * 10^{10}\\= 1.55 * 10^{10}\)
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5. in an experiment that tested how adding variable quantities of sugar to flowers in a vase made the flowers last longer, the dependent variable would be the \
For given scenario the dependent variable would be the life of flowers.
For given question,
The variable that researchers are trying to explain or predict is called the
response variable. It is also sometimes called the dependent variable
because it depends on another variable.
The variable which is used to predict the response variable is known as the explanatory variable. It is also called as an independent variable because it does not depend on another variable.
The amount of sugar would be an independent variable and the life of flowers is a dependent variable.
Therefore, for given scenario the dependent variable would be the life of flowers.
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Vaca books has a net profit margin of 5.1 percent, a total asset turnover of 1.84, and a return on equity of 16.2 percent. what is the debt-equity ratio?
The debt-equity ratio is 0.726 : 1 or 72.64%
What is the Debt?Debt is the product of debt ratio and total equity
Debt = debt ratio × total equity
We have been given that
Asset turnover = 1.84
Profit margin = 5.1%
Return on equity of 16.2 percent
Let we have to assume that sales are $100.
Therefore net Income = 100×0.051 = 5.1
Total Assets = 100/0.84
Total Assets = 54.35
⇒ 0.162 = 5.1 / Total equity
⇒ Total Equity = 5.1 / 0.162
⇒ Total Equity = 31.48
Total assets = Total debt + Total equity
⇒ 54.35 = Total debt + 31.48
⇒ Total debt = 54.35 - 31.48
⇒ Total debt = 22.87
The debt-equity ratio = 22.87 / 31.48
The debt-equity ratio = 0.72649 : 1 or 72.649%
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sec(pi/2 -x) =csc x true or false
Answer:
true
Step-by-step explanation:
if you rewrite \(sec\left(\frac{\pi }{2}\:-x\right)\) with trigonometric identities:
\(sec\left(\frac{\pi }{2}\:-x\right)\) \(=\frac{1}{\sin \left(x\right)}\)
\(\frac{1}{\sin \left(x\right)}\) \(=\csc \left(x\right)\)
so, yes, \(sec\left(\frac{\pi }{2}\:-x\right)\) \(=\csc \left(x\right)\)
hope this helps!!
Emma tossed a six-sided die two times and recorded the sum of the two numbers. How many different sums are possible for her to record?
Answer:
11
Step-by-step explanation:
6 times 6 is 36
Think about this you row a 1 first the possible result of the next row is 1,2,3,4,5,or 6 and that is 6 possible sums.
Which is 2, 3, 4, 5, 6, and 7
Next she rows 2 with again 6 possible results
Which is 3, 4, 5, 6, 7,and 8
Then she rows a 3, 4, 5,and 6
with the possible results
4, 5, 6, 7, 8, 9
5, 6, 7, 8, 9, 10
6, 7, 8, 9, 10, 11
7, 8, 9, 10, 11, 12
They asked for different sums so out of the results the different sums is
2, 3, 4, 5, 6, 7, 8, 9, 10, 11,and 12
HOPE THIS HELPS:)
Answer:
11
Step-by-step explanation:
i just took the test lol
Give expression: x2 - 5x + 1 evaluate if x = 7
Answer:
Step-by-step explanation: gay
Answer:
=x2−5x+1
Step-by-step explanation:
Assume that a sample is used to estimate a population proportion \( p \). Find the \( 98 \% \) confidence interval for a sample of size 307 with \( 82 \% \) successes. Enter your answer as an open-int
The 98% confidence interval for a sample of size 307 with 82% successes is (0.7487, 0.8913).
To find the confidence interval for a sample of size 307 with 82% success and 98% confidence interval,
The following steps should be followed:
Step 1: Calculate the standard error of the statistic. Standard error is given by; `
se= sqrt [(p*(1-p))/n]`Where `p` is the proportion of successes and `n` is the sample size.
So, `se= sqrt [(0.82*(1-0.82))/307]
= 0.0306`
Step 2: Calculate the z-score associated with the confidence level of 98%. We can look up the z-score from the standard normal table or use the calculator. `
z=2.33`
Step 3: Calculate the margin of error. `ME= z*se = 2.33 * 0.0306 = 0.0713`
Step 4: Calculate the confidence interval. The interval is given by;
CI = (p - ME, p + ME)`
Substitute the values, CI = `(0.82 - 0.0713, 0.82 + 0.0713)
= (0.7487, 0.8913)`
Therefore, the 98% confidence interval for a sample of size 307 with 82% successes is (0.7487, 0.8913).
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Savanna is ordering crafts for Thanksgiving for her class. Each individual craft cost $1.50. There are a shipping fee and handling fee of $10.00 per order. Why are the quantities important?
Answer:
i smell penys
Step-by-step explanation:
The polynomial (x – 2)(x^2 + 1) – x(x – 3) can be written in the form: ax^3 + bx^2 + cx + d where a, b, c, and d are constants. What are the values of a, b, c, and d? Show your work.
Therefore the polynomial (x – 2)(x^2 + 1) – x(x – 3) can be written in the form: ax^3 + bx^2 + cx + d = x^3 - 2x^2 + 4x - 6 where a = 1, b = -2, c = 4, and d = -2
What is the polynomial after simplificationThe polynomial (x – 2)(x^2 + 1) – x(x – 3) can be written as:
ax^3 + bx^2 + cx + d = (x - 2)(x^2 + 1) - x(x - 3)
To find the values of a, b, c, and d, we need to multiply out the binomials and combine like terms. Using the distributive property, we get:
ax^3 + bx^2 + cx + d = x^3 - 2x^2 + x^2 + x - x^2 + 3x - 2
Now we can combine like terms:
ax^3 + bx^2 + cx + d = x^3 - 2x^2 + 4x - 2
So we can see that:
a = 1, b = -2, c = 4, and d = -2
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Use the four-step process to find f
′
(x) and then find f
′
(1),f
′
(2), and f
′
(3). f(x)=x
2
+8x−6 f
′
(x)= f
′
(1)= (Type an integer or a simplified fraction.) f
′
(2)= (Type an integer or a simplified fraction.) f
′
(3)= (Type an integer or a simplified fraction.)
Using the four-step process, f'(1) = 10, f'(2) = 12, and f'(3) = 14.
To identify f'(x), the derivative of f(x), using the four-step process, we can follow these steps:
1: Identify the function.
The given function is f(x) = x^2 + 8x - 6.
2: Apply the power rule.
Differentiate each term of the function separately.
The derivative of x^2 is 2x.
The derivative of 8x is 8.
The derivative of -6 is 0 (constant term).
3: Simplify.
Combine the derivatives obtained in step 2.
So, f'(x) = 2x + 8.
4: Evaluate f'(1), f'(2), and f'(3).
Substitute x = 1, 2, and 3 into the derived equation to identify the respective values.
f'(1) = 2(1) + 8 = 10.
f'(2) = 2(2) + 8 = 12.
f'(3) = 2(3) + 8 = 14.
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Find m angle Y
(6x – 23)
(4х + 9)
m angle Y = ?
a
54
b
34
C
73
d
16
Answer:
m<y= 34
Step-by-step explanation...
6x-23=4x+9
2x=32
x=16
m<y+m<z=180
m<y=73+73=180
m<y=34
An isosceles triangle is a two-dimensional figure which has two equal sides and the two angles opposite to the equal sides are equal.
The sum of the three angles is equal to 180 degrees.
The value of angle m∠Y is 34°.
Option B is the correct answer.
What is a triangle?It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.
We have,
Isosceles triangle:
Two sides are equal.
The angles opposite to the equal sides are also equal.
So,
From the figure we have,
6x - 23 = 4x + 9
Add 23 on both sides.
6x - 23 + 23 = 4x + 9 + 23
6x = 4x + 32
Subtract 4x on both sides.
6x - 4x = 4x + 32 - 4x
2x = 32
Divide both sides by 2.
x = 32/2
x = 16
The sum of the three angles of the Isosceles triangle given must be 180 degrees.
6x - 23 + 4x + 9 + m∠Y = 180
Put x = 16
6x16 - 23 + 4x16 + 9 + m∠Y = 180
96 - 23 + 64 + 9 + m∠Y = 180
146 + m∠Y = 180
Subtract 146 on both sides.
m∠Y = 180 - 146
m∠Y = 34
Thus,
The value of angle m∠Y is 34°.
Option B is the correct answer.
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The mass, m grams, of a radioactive substance, present at time t days after first being observed, is given by the formula m=24e^-0.02t. Find
(i) the value of m when t=30.
(ii) the value of t when the mass is half of its value at t=0.
(iii) the rate at which the mass is decreasing when t=50.
Answer:
(i) The value of m when t = 30 is 13.2
(ii) The value of t when the mass is half of its value at t=0 is 34.7
(iii) The rate of the mass when t=50 is -0.18
Step-by-step explanation:
(i) The m value when t = 30 is:
\( m = 24e^{-0.02t} = 24e^{-0.02*30} = 13.2 \)
Then, the value of m when t = 30 is 13.2
(ii) The value of the mass when t=0 is:
\( m_{0} = 24e^{-0.02t} = 24e^{-0.02*0} = 24 \)
Now, the value of t is:
\( ln(\frac{m_{0}/2}{24}) = -0.02t \)
\( t = -\frac{ln(\frac{24}{2*24})}{0.02} = 34.7 \)
Hence, the value of t when the mass is half of its value at t=0 is 34.7
(iii) Finally, the rate at which the mass is decreasing when t=50 is:
\( \frac{dm}{dt} = \frac{d}{dt}(24e^{-0.02t}) = 24(e^{-0.02t})*(-0.02) = -0.48* (e^{-0.02*50}) = -0.18 \)
Therefore, the rate of the mass when t=50 is -0.18.
I hope it helps you!
How many moles contain 1.25x 10^15 molecules of glucose
Answer:
i.e. mass of 1 mole of glucose, C6H12O6 = (6 × 12.01 + 12 × 1.01 + 6 × 16.00) g = 180.18 g (using atomic weight data to 2 decimals) 1 mole of carbon atoms weighs 12.01 g and there are 6 moles of C atoms in 1 mole of glucose, so the mass of carbon in 1 mole of glucose = 6 × 12.01 g = 72.06 g.
Step-by-step explanation:
Find the value of f(-8).
Answer:
-8f
Step-by-step explanation:
Ive wasted so many points asking this please help im begging
When cubing a number, you have to...
Answer:
multiply the number its self 3 times , for example 3x3x3=27 = 3^3
Step-by-step explanation:
Answer:
you have to multiply the number by itself 3 times
Step-by-step explanation:
can i get brainliest? i only need 2 more
what is the solution to the system of equations ? 3r+2y=45 4r-y=5 1. r=5 y=10 2.r=15 y=10 3.r=5 y=15 4. r=15 y=5
Answer:
The solution to the system of equation is;
\(\begin{gathered} r=5 \\ y=15 \end{gathered}\)Explanation:
Given the system of equations;
\(\begin{gathered} 3r+2y=45\text{ -----------1} \\ 4r-y=5\text{ ----------2} \end{gathered}\)Let us solve by elimination, multiply equation 2 by 2 and add to equation 1 to eliminate y;
\(\begin{gathered} 4r(2)-y(2)=5(2) \\ 8r-2y=10\text{ -----------3} \end{gathered}\)adding to equation 1;
\(\begin{gathered} 3r+8r+2y-2y=45+10 \\ 11r=55 \\ r=\frac{55}{11} \\ r=5 \end{gathered}\)we can now use the value of r to solve for y;
\(\begin{gathered} 3r+2y=45 \\ 3(5)+2y=45 \\ 15+2y=45 \\ 2y=45-15 \\ 2y=30 \\ y=\frac{30}{2} \\ y=15 \end{gathered}\)Therefore, the solution to the system of equation is;
\(\begin{gathered} r=5 \\ y=15 \end{gathered}\)Divide the following polynomial using synthetic division, then place the answer in the proper location on the grid. Write answer in descending powers of x. (x 4 - 81) (x - 3).
The final polynomial equation after synthetic division is \(x^5-3x^4-81x+243\)
We need to solve;
Put the solution in the appropriate spot on the grid after using synthetic division to divide the following polynomial. Respond with descending powers of x.
The polynomial equation given is;
\(\left(x^4-81\right)\left(x-3\right)\)
By using synthetic division;
⇒ \(x^4x+x^4\left(-3\right)-81x-81\left(-3\right)\)
\(x^5-3x^4-81x+243\)
→ The required final equation in descending powers of x is \(x^5-3x^4-81x+243\) .
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What value of 0 makes cos0= sin 70° a true statement?
A) 20°
B) 40°
C)70°
D) 90°
Answer:
A) 20 degrees
Step-by-step explanation:
The sine of an angle is equal to the cosine of the angles complimentary angle.
The distance from a point on a circle to its center is the _____ of the circle.
The distance from a point on a circle to its center is called the radius, and it plays a crucial role in defining the circle's characteristics.
The distance from a point on a circle to its center is the radius of the circle.
1. In a circle, the radius is the distance from the center to any point on the circle.
2. The radius is always the same length, no matter which point on the circle is chosen.
3. It is an essential property of a circle and helps determine the size and shape of the circle.
In conclusion, the distance from a point on a circle to its center is called the radius, and it plays a crucial role in defining the circle's characteristics.
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What is the value of K?
Answer:
80 degrees
Step-by-step explanation:
180 - 100 = 80
I need help ASAP!!Please explain how to do the problem
Answer:
The first option, (x-3)^2 + (y+4)^2 = 1
Step-by-step explanation:
The circle formula for graphing is (x-h)^2 + (y-v)^2 = r^2 with the center of the circle being (h,v) and the radius being r. With that said, we just plug in the values we see on the graph, which is h = 3, v = -4, and r = 1. Once we do some simplifying, we would get the equation of (x-3)^2 + (y+4)^2 = 1, which is the first option!
I hope this helped! :D
What is the opposite operation of the square root?
Answer:
The opposite of multiplication is division. The opposite of division is multiplication. The opposite of taking a square root is squaring
Step-by-step explanation:
is this right?? this assignment is graded and no links!!
suppose y varies directly as x and y = 21 when x = 3. find y when x =2
Answer:
If y varies directly as x, then we can express this relationship using a proportionality constant k, such that:
y = kx
To solve for k, we can use the initial condition given:
y = 21 when x = 3
Substituting these values into the equation above, we get:
21 = k * 3
Solving for k, we get:
k = 7
Now that we have k, we can use the equation to find y when x = 2:
y = kx
y = 7 * 2
y = 14
Therefore, when x = 2, y = 14.
Step-by-step explanation:
Akeem can run 100 m in 12. 4 sec.
How long would it take Akeem to run 300 m at that speed?
Akeem can run 100 meters in 12.4 seconds. It would take 37.2 seconds for Akeem to run 300 meters at that speed.
If Akeem runs 100 meters in 12.4 seconds, we can set up a proportion to find the time it would take for him to run 300 meters. The proportion can be set up as follows:
100 meters / 12.4 seconds = 300 meters / x seconds
By cross-multiplying and solving for x, we can determine the value of x, which represents the time it would take for Akeem to run 300 meters at the same speed.
Now, let's solve the proportion:
100 * x = 12.4 * 300
x = (12.4 * 300) / 100
x = 37.2 seconds
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Which equation is equivalent to
The equation x² + 81 = (x + 10)² is equivalent to \(\sqrt{x^2 + 81} = x + 10\)
How to determine the equivalent equation?The equation is given as:
\(\sqrt{x^2 + 81} = x + 10\)
Square both sides
x² + 81 = (x + 10)²
Although it can be further simplified, the above equation is equivalent to \(\sqrt{x^2 + 81} = x + 10\)
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Victoria is studying the population of the town of Oak Hills for a class project. Based on census data, she found that the equation p = 660n + 14,400 can be used to estimate the population, p, of Oak Hills n years after the year 1900. What will be the estimated population of Oak Hills in the year 2100?
A. 3,012,000
B. 146,400
C. 15,300
D. 132,000
Answer:
Step-by-step explanation:
2100 - 1900 = 200
660(200) + 14,400
p = 146400
146,400 people
The answer is B
Five out of seven cheerleaders can do a back tuck. If there are 490 cheerleaders in the cheer camp, how many cheerleaders can do a back tuck?
350 cheerleaders. the rate 5:7 is how many do a back tuck. soo the rate 5:7 is the same as 350:490 simplify is 35:49 simplifyed by 7 to 5:7 a
Step-by-step explanation:
the ratio is 5:7 for how many do a back tuck.
soo the rate 5:7 is the same as 350:490 // 35:49 // 5:7. hope that helps!!
A card is selected to from a standard deck of 52 card what are the odds of selecting a red 9
The odds of selecting a red 9 is 1/26.
Probability of an event E is represented by P(E) can be defined as (the number of favorable outcomes) / (Total number of outcomes).
Given the total number of cards in a standard deck = 52
there can be only two red9 as one 9 from heart and one red from diamond.
So the number of outcome for red 9 =2
the probability of odds of selecting red 9 is \(\frac{2}{52}\) which can be further simplified into \(\frac{1}{26}\).
Therefore , The odds of selecting a red 9 is 1/26.
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