I see choice (A) is missing, so I am giving you two solutions for you to understand and decide which one applies:
(1) Final balance with compound interest - meaning every year you add the year's interest to the principal and earn interest on the increased amount, etc. This is the actual case in real banks:
principal amount is $425 at (annual) interest rate 4.5%
interest amount for 1 year $19.13
Now, use the formula for compound interest
total balance = principal*(1+interest rate)^year
[tex]\$425\cdot(1.0475)^4= \$511.68[/tex]
So the amount after 4 years with compound interest should be $511.68
(2) the silly way: earn interest of $20.1875 every year and keep it separately (not earning additional interest). That'll make 425+4*20.1875=$505.75 which is answer (C)
so if your (A) matches my solution (1) then go with that. If not, choose (C).
You decide to start baby-sitting. You find out it is $42 for the CPR certification. Your
mom is going to charge you $1 for gas and use of her cell phone for each hour you
baby-sit as she has to drive you to all of your jobs. If you charge $8 an hour for each
hour you baby-sit, how many hours will you need to work to break even in your new
venture?
An airplane is traveling at a speed of 200 km/h. Compute the speed of the airplane in m/s.
A) 3.3 m/s
B) 33.3 m/s
C) 55.6 m/s
D) 111.20 m/s
Given the speed is 200 km /hr
use 1 km = 1000 meter
1 hr = 3600 seconds
so
[tex]200 km/hr = \frac{200*1000}{1*3600} m/s[/tex]
simplifies to
[tex]\frac{5000}{9} m/s[/tex]
[tex]55.6 m/s[/tex]
so option C
Answer: C) 55.6 m/s
Step-by-step explanation: 200km/1hr x 1000m/1km x 1hr/60min x 1min/60s = 55.6 m/s
If the conversion factors are properly set up and all numbers are correct, the unwanted units cancel out leaving the units of the final answer.
which of the following is a true statement?
A I think
it could be wrong though
A car travels 150km on 12 L of gasonline. How many liters are there of gasoline needed to travel 500km
You can use the given distance to amount of gasoline used relationship to find how much gasoline is needed for 1 km of traveling. Then use that data to find the amount of gasoline needed to travel 500 km.
The amount of gasoline needed to travel 500 km is 40 L
How to find the gasoline used for 1 km of distance traveled?We can equate the 150 km figure to 12 L use of gasoline on the basis of usage.
Thus,
[tex]\rm 150 \: km = 12 \: L\\\\\\\text{Dividing both quantities in 150 parts}\\\\\\dfrac{150}{150} \: km = \dfrac{12}{150} \: L\\\\1 \: km = 0.08 \: L[/tex]
Thus, there will be use of 0.08 L gasoline for travelling 1 km by that same car.
Using that above derived relationship, we can find the amount of gasoline needed to travel 500 km by that same car.
[tex]1 \rm \: km = 0.08 \: L\\\\\text{Multiplying 500 on both the sides}\\\\500 \: km = 40 \: L[/tex]
Thus,
The amount of gasoline needed to travel 500 km is 40 L
Learn more about division here:
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Uncle Percy sold t-shirts at the show. Now he only has 10% of the t/shirts now, how many did he start with?
Answer: He started with 250 t-shirts.
Step-by-step explanation:
Let the total number of shirts he start with be 'x'.
He has only 10% of the t-shirts.
Number of t-shirts he has now = 25
According to question, it becomes,
[tex]\frac{10}{100}\times x=25\\\\0.1\times x=25\\\\x=\frac{25}{0.1}\\\\x=250[/tex]
Hence, he started with 250 t-shirts.
Thus, Second option is correct.
Use the method of completing the square to solve x2-8x+7=0
A should be your answer no 100 %
[tex]Solution, solve\:for\:x,\:x^2-8x+7=0\quad :\quad x=7,\:x=1[/tex]
Steps:
[tex]Solve\:with\:the\:quadratic\:formula, \mathrm{For\:}\quad a=1,\:b=-8,\:c=7:\quad x_{1,\:2}=\frac{-\left(-8\right)\pm \sqrt{\left(-8\right)^2-4\cdot \:1\cdot \:7}}{2\cdot \:1},\\[/tex]
[tex]x=\frac{-\left(-8\right)+\sqrt{\left(-8\right)^2-4\cdot \:1\cdot \:7}}{2\cdot \:1}:\quad 7[/tex]
[tex]x=\frac{-\left(-8\right)-\sqrt{\left(-8\right)^2-4\cdot \:1\cdot \:7}}{2\cdot \:1}:\quad 1[/tex][tex]\mathrm{The\:final\:solutions\:to\:the\:quadratic\:equation\:are:} x=7,\:x=1[/tex]
The correct answer is B.
A blueprint for a garage has a scale of 1.5 cm to 3 m. On the blueprint, the length of one wall is 8 cm. If w represents the length of the actual wall, what is w?
Answer:
16m
Step-by-step explanation:
Billy has $18.36. he bought turtle and cat treats. how much money did he have left?
it depends on how much the turtle and the dog treats are use that like 5 dolor each so im going to say 8 maybe
unit 15subtract fraction 1/3 - 1/6
Answer:
1/6
Step-by-step explanation:
First, you want the denominators to be the same so you can subtract them.
1/3=2/6
2/6-1/6=1/6
Hope this helped!
Square root of 3^4 or √3^4
A.1
B.2
C.3
D.4
Answer:
answer is 9.
Step-by-step explanation:
two factors of 38 add up to 15 what are they
Answer: The answer to this problem is: no solution
Step-by-step explanation: The trick to solving this problem is listing out 38's factors:
1, 2, 19, 38. As you can see, none of these pairs add up to 15, so there is no solution (unless you are talking about fraction factors)
Solve the inequality 1 ≤ s -8
1 ≤ s -8
1+8 ≤ s
9. ≤ s
The value of the variable s is greater than or equal to 9.
What is inequality?Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.
Making anything easier to accomplish or comprehend, as well as making it less difficult, is the definition of simplification.
The inequality is given below.
1 ≤ s - 8
Simplify the inequality, then the value of the variable s will be
1 ≤ s - 8
1 + 8 ≤ s
9 ≤ s
Thus, the value of the variable s is greater than or equal to 9.
More about the inequality link is given below.
https://brainly.com/question/19491153
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Approximately 3 out of every 25 Americans live in California. About 3 out of every 50 Americans live in New York, and about 2 out of every 25 Americans live in Texas.
A. Which state has the largest population?
b Which state has the smallest population?
C. About what percentage of Americans do not live in California, New York, or Texas?
Convert all statistics into percentages:
CA: 3/25=0.12 -> 12%
NY: 3/50=0.06 -> 6%
TX: 2/25=0.08->8%
(A) Out of the three states, California has the largest population
(B) Out of the three states, NY has the smallest population
(C) USA=100%, CA+NY+TX=26%, therefore 74% of USA do not live on those three states.
What substitution should be used to rewrite 4x^4-21x^2+20=0 as a quadratic equation
let y = x^2
4y^2 -21y + 20 = 0
solve for y
then substitute back in to get x
Answer:
4y^2 - 21y + 20 = 0
Step-by-step explanation:
As (4x^4 - 21x^2 + 20=0) being a biquadratic equation, meaning it is a 4-degree equation without the terms of degree 1 and 3.
To solve this particular case you only need to replace the variables of degree 4 and 2 for a new variable of degree 2 and 1 and solve it as regular quadratic equation and then undo the change.
* Using a new variable we can rewrite the equation:
Let y be the new variable;
y= x^2, then y^2= x^4
Then we have;
4y^2- 21y+20=0
Solve for y and then find X which will be the roots for the biquadratic equation.
Solve for this equation 80=3y+2y+4+1
80 = 3y + 2y + 4 +1
80 = 5y + 5
80 - 5 = 5y
75 = 5y
75 = 5y/5y
75/5 = y
15 = y
Does the function have a constant rate of change?
Factor the expression. k2 + 5kf – 50f2
Answer:
We have
k^2 - 25f^2 + 5kf - 25f^2 =
k^2 - (5f)^2 + 5f( k - 5f) =
( k - 5f )( k + 5f ) + 5f( k - 5f ) =
( k - 5f )( k + 5f + 5f ) =
( k - 5f )( k + 10f );
Step-by-step explanation:
Answer: The required factored form of the given expression is [tex](k-5f)(k+10f).[/tex]
Step-by-step explanation: We are given to factor the following quadratic expression :
[tex]E=k^2+5kf-50f^2~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)[/tex]
To factor the given expression, we need two integers with sum 5 and product -50 and those two integers are 10 and -5.
The factorization of expression (i) is as follows :
[tex]E\\\\=k^2+5kf-50f^2\\\\=k^2+10kf-5kf-50f^2\\\\=k(k+10f)-5f(k+10f)\\\\=(k-5f)(k+10f).[/tex]
Thus, the required factored form of the given expression is [tex](k-5f)(k+10f).[/tex]
True or False? The following is an example of inductive reasoning: In your study of geometry, you notice that every square you have seen is also a rectangle. You conclude that this is true in all cases.
Answer:
true
Step-by-step explanation:
What does 3+3 (a) simplify to when a=5
For any three consecutive numbers, what can you say about odd numbers and even numbers?Explain
HELP DFASSSSSSSSSTTTTTTT PLZZZZZ
If 4a = 4, then a = 1 Which property is demonstrated by the example? A) distributive property B) identity property for addition C) multiplicative property of zero D) identity property for multiplication
A. distributive property
i hope this helps
A is your answer because 4×1=4 so it means that it is thedistributive property
Paco, Jayden, Brett each made a stack of superheroes cards. Pacos stack was 0.342 meter high. Jaydens stack was 0.41 meter high. Brett stack was 0.405 meter high. Write a number sentence that compares Jayden stack of cards Brett stack of cards.
Jayden's stack of superhero cards, which is 0.41 meters high, is taller than Brett's stack of superhero cards, which is 0.405 meters high. The number sentence to compare them is 0.41 > 0.405.
The student is asking to write a number sentence that compares Jayden's stack of cards to Brett's stack of cards.
Jayden's stack was 0.41 meter high, and Brett's stack was 0.405 meter high. To compare these two stacks, we look at the decimal values given for the heights. Since 0.41 is greater than 0.405, the number sentence that compares the two stacks is:
Jayden's stack > Brett's stack
Or in terms of the specific values:
0.41 > 0.405
This shows that Jayden's stack of cards is taller than Brett's stack of cards.
The graph of the distance a car travels at a constant speed passes through the points (0,0) and 2,136). The x scale is hours and the y scale is miles. How fast is the car traveling?
A. 134 miles per hour
B. 68 miles per hour
C. 34 miles per hour
D. 136 miles per hour
We are given that
y-scale is a distance in miles
x-scale is a time in hours
and we are given
The graph of the distance a car travels at a constant speed passes through the points (0,0) and (2,136)
so, points would be
(0,0)
x1=0 , y2=0
(2,136)
x2=2 , y2=136
so, slope would be speed
because speed = distance / time
we can use slope formula
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
now, we can plug values
[tex]m=\frac{136-0}{2-0}[/tex]
[tex]m=68[/tex] miles per hour
so, option-B..........Answer
Answer:
B
Step-by-step explanation:
whats the answer to 2 2/8
2 2/8=10/8 22/8=2 6/8 or 2 3/4
if you are trying to make it an improper faction it would be 9/4
Maya is on the swim team. Each day she swims 750 m. Use the facts to find how much this is in kilometers
Maya swims 0.75 kilometers each day because to convert 750 meters to kilometers, we divide by 1,000.
The student wishes to know how many kilometers Maya swims each day if she swims 750 meters. To convert meters to kilometers, we use the fact that 1 kilometer is equivalent to 1,000 meters. So, to find out how many kilometers 750 meters is, we divide the number of meters by 1,000.
750 meters \/ 1,000 = 0.75 kilometers
Therefore, Maya swims 0.75 kilometers each day.
find the difference 572-284
Answer:
288
Step-by-step explanation:
-15h + 100 = 40, but what is the value of k?
I don't know if you accidentally put down the wrong variable, but the answer for h would be h=4. First things first, you have to subtract 100 from both sides, and this would become -15h=-60. After that, divide -15 on both sides, thus it leaves you with h by itself and it's value is 4. h=4
Hope this was helpful:)
You and a friend each roll a standard die to see who goes first in a board game. What is the probability that at least one of you rolls a 6?
Answer:
2
--
6
Step-by-step explanation:
2 over 6
Answer:
the answer is 11/36
Step-by-step explanation:
Find -7 -(-3)=
What’s the answer explain !
Because there are 2 minus signs next to each other, we can replace both of them with a single plus sign.
This changes the equation to -7 + 3
Adding to a negative number makes the number appear smaller, so 3 + -7 = -4.
Remove parenthesis
-7=3
Calculate the sum
-4
6a−3b=5b solve for a:b ratio plz help
The expression 6a − 3b = 5b after solving for a:b is 4:3 after using arithmetic operation.
What is the ratio?It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.
It is given that:
The expression is:
6a − 3b = 5b
To solve the above expression:
6a = 5b + 3b
6a = 8b
a/b = 8/6
As we know,
The expression can be defined as the combination of constants and variables with mathematical operators.
a:b = 8: 6
a:b = 4: 3
If in the linear expression, one variable is present, then the expression is known as the linear expression in one variabe.
Thus, the expression 6a − 3b = 5b after solving for a:b is 4:3 after using arithmetic operation.
Learn more about the ratio here:
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