Answer:
there is this video
Step-by-step explanation:
just look up this
How do you find the growth rate of an exponential function? hope this helps you will find your answer i hope
Find the sum of the geometric series
1+ 0.8 + 0.8^2 + 0.8^3 + ... + 0.8^19
Work Shown:
a = first term = 1
r = 0.8 = common ratio
We know the common ratio is 0.8 because we multiply this common ratio by each term to get the next term. The easiest to spot this is going from term1 to term2. Put another way, term2/term1 = 0.8/1 = 0.8 is our common ratio.
The general form of the nth term of a geometric sequence is [tex]a(r)^{n-1}[/tex] and because the last term has an exponent of 19, this means n-1 = 19 solves to n = 20. Therefore, we are summing exactly n = 20 terms here.
Use the formula below to take a shortcut rather than painstakingly find all 20 terms and then summing them.
[tex]S = \frac{a*(1-r^n)}{1-r}\\\\S = \frac{1*(1-0.8^20)}{1-0.8}\\\\S \approx \frac{1*(1-0.01152921504607)}{1-0.8}\\\\S \approx \frac{1*(0.98847078495393)}{0.2}\\\\S \approx \frac{0.98847078495393}{0.2}\\\\S \approx 4.94235392476964\\\\[/tex]
This value is approximate.
------------
To check your answer, you could type the following into your calculator
1+0.8+0.8^2+0.8^3+0.8^4+0.8^5+0.8^6+0.8^7+0.8^8+0.8^9+0.8^10+0.8^11+0.8^12+0.8^13+0.8^14+0.8^15+0.8^16+0.8^17+0.8^18+0.8^19
Though as you can see, this is very tedious to type in. This is why the formula in the previous section above is preferred.
2. Find the surface area of the triangular pyramid. The base is an equilateral triangle.
Answer:
19.2
Step-by-step explanation:
you just need to add them then you will be just
How you would solve the following problem: 4.5 + h = 7.3.
can somebody explain this to me
Answer:
80
Step-by-step explanation:
if 1=40
2 = x
1*x=2*40
x=80
Answer:
80 ounces
Step-by-step explanation:
Let x ounces of gas is needed for 3 ounces of oil.
[tex] \therefore \: \frac{40}{1} = \frac{x}{2} \\ \therefore \: x = 40 \times 2 \\ \huge \purple{ \boxed{\therefore \: x = 80 \: ounces}} \: [/tex]
what is the mean of -2, -6, -7, -3
Answer:
how u write dashain letter
I also need help on this question
Which equation represents the graph below?
A. y=3x-2
B.y=-2x+3
C.y=3x-2
D.2x+3
Answer:
d
Step-by-step explanation:
100 POINTS!!!!!! MAY SOMEONE PLEASE HELP ME!!!! I NEED IT BAD!
THANK YOU IN ADVANCE!
Answer:3 7/8
Step-by-step explanation:A. I think you just want the answer not the explanation. :)
Answer:
m
Step-by-step explanation:
find the base and height!!! first right answer gets 10 points
Answer: What are you doing?
Step-by-step explanation:
At the top, it clearly says to do the quiz without help.
Colton is painting a set of figurines a solid color. It takes him 15 minutes and 5 milliliters of paint to finish a small figurine. It takes him 30 minutes and 8 milliliters of paint to complete a large figurine. Colton plans to paint for at least 360 minutes, and he can use a maximum of 100 milliliters of paint.
(20 points) This graph and system of inequalities represent this situation, where x represents the number of completed small figurines and y represents the number of completed large figurines.
15x + 30 ≥ 360
5x + 8y ≤ 100
Answer:
4,10
Step-by-step explanation:
We want where they both overlap
X must be greater than 0
We cannot have parts of figures so we must have whole numbers
(6,9) is too large
Answer:
A
Step-by-step explanation:
The solution set is the purple region. The intersection lies at (4,10)
The region is towards left of x=4 so it can't be D
x and y have to be non-negatve integers. So it can't be B or C
select the function that represents a parabola with vertex at (2,-1) and a point (5,8) on its curve
a.) f(x)=2(x+2)^2-1
b.) f(x)=(x+2)^2-1
c.) f(x)=(x-2)^2-1
d.) f(x)=2(x-2)^2-1
Answer:
Correct answer is c.) [tex]f(x)=(x-2)^2-1[/tex]
Step-by-step explanation:
The vertex form of a parabola can be written as following:
[tex]y = a(x-h)^2 + k ....... (1)[/tex]
[tex](h,k)[/tex] is the co-ordinate of vertex.
[tex]a[/tex] is a constant whose positive or negative value decides where the parabola opens (up or down).
[tex](x,y)[/tex] are the points on parabola.
[tex]y[/tex] and [tex]f(x)[/tex] are interchangeable terms. We can use any of them.
For convenience with the co-ordinates in [tex]xy-[/tex]plane, [tex]y[/tex] is used here.
We are given that vertex is at (2,-1) and there is a point (5,8) on the curve.
i.e. h = 2 and k = -1,
x = 5 and y = 8
Putting the four values in equation (1):
[tex]8 = a(5-2)^2 + (-1)\\\Rightarrow 8 = a(9) -1\\\Rightarrow 9 = 9a \\\Rightarrow a = 1[/tex]
Putting values of [tex]a[/tex] and [tex](h,k)[/tex] in equation (1) to find the equation of parabola:
[tex]y=(x-2)^2-1[/tex]
As told earlier as well, [tex]y[/tex] and [tex]f(x)[/tex] are interchangeable terms.
So, correct equation of parabola is option C) [tex]f(x)=(x-2)^2-1[/tex]
In the figure, what is m ZABE? What is m ZDBE? Enter your answers in the boxes.
D
E
64.5°
A
B
C
m ZABE:
m ZDBE:
Answer:
m<ABE = 115.5°
m<DBE= 25.5°
Step-by-step explanation:
m<DBC= 90°
m<DBE + m<EBC= 90°
m<DBE +64.5°= 90°
m<DBE = 90°-64.5°
m<DBE = 25.5°
m<ABE = m<ABD + m<DBE = 90°+25.5° = 115.5°
Answer:
It is mZABE=ZIMBABWE
Step-by-step explanation:
Z+I+M+B+A+B+W+E
6x = -54
Help Please
Answer:
x=-9
Step-by-step explanation:
6x=-54
Divide both sides by 6.
-54/6 = -9
x=-9
Look at the attached picture
Hope it will help you
The sum of a number and two less than twice the number is twenty two.
(as an equation)
Answer:
2-(2*N)=22
Step-by-step explanation:
Martin ordered a pizza with a 16-inch diameter.Ricky ordered a pizza with a 20-inch diameter.What is the approximate difference in area of the 2 pizzas?
ANSWER QUICK. I NEED ANSWER IN 5 min!!!
Answer:
hey hot stuff
Step-by-step explanation:
Answer:
yes, (2,3) is a solution to both equations
Step-by-step explanation:
1. since both expressions are equal to [tex]y[/tex], set [tex]x+1[/tex] and [tex]-x+5[/tex] equal to each other
[tex]x+1=-x+5[/tex]
2. solve
[tex]x=-x+4[/tex]
[tex]2x=4[/tex]
[tex]x=2[/tex]
3. substitute the value of x into the equations
[tex]y=2+1[/tex]
[tex]y=-2+5[/tex]
4. solve
[tex]3=5\\3=5[/tex]
A car used 1/64 of a gallon of gas to drive 1/4 of a mile.At this rate how many miles can the car travel using 1 gallon?
Answer:
I'm pretty sure it's 14 not sure but positive
A while ago, Ruben bought shares of stock in a high-tech firm. At that time, the selling price was $100 per share. According to today's newspaper, a share is currently worth 23% more. What is the current value of one share?
Answer:
123
Step-by-step explanation:
to find the current value of one share just do this
23/100*100=23 so just add 23 on 100 and you will get 123 which is the current value of one share.
Lydia writes the equation below with a missing value.
y=5x-[]
She puts a value in the box and says that the equation represent a direct variation. Which explains whether the equation could represent a direct variation?
A.The equation has a minus sign, so it cannot represent a direct variation.
B.If she puts 5 in the box, she would have a direct variation.
C.If she puts 0 in the box, she would have a direct variation.
D.The equation is not of the form y = kx, so it cannot represent a direct variation.
Answer:
If she puts 0 in the box she would have a direct variation.
Step-by-step explanation:
Given : Lydia writes the equation y = 5x - __ with a missing value.
She puts a value in the box and says that the equation represents a direct variation.We have to choose the correct option from the given options that explain that the equation could represent a direct variation.When two variables are such that one is a constant multiple of other, we said they are in Direct variation.
That is in form of y = ax , here y and x are in direct variation.Consider the given equation y = 5x - __
For the equation to be in direct variation the value of missing term has to be 0.
then equation becomes,y = 5x
Thus, If she puts 0 in the box she would have a direct variation.
Option (a) is correct.
Which ordered pair cannot be a solution of h(t)=-16^2+80t if h is the height of a ball above ground after t seconds?
Answer:
None of them can be a solution
Step-by-step explanation:
Can someone please explain this question?
Unimodal means one hump; symmetric means there's a central axis of symmetry, here at x=4.
Answer: B. Unimodal symmetric
Kevin’s salary is $410.00 per week. He will get paid monthly. How Much will his straight time pay be for one month (4 weeks)? A) $1,640.00 b) $960.00 C)$640.00 d) $1,280.00
HELP QUICK I DON'T WANNA FAIL PLZZ HELP ME!!!
Answer:
A. X
The dots follow the red line better than the rest.
Answer: it is x
Step-by-step explanation: The dots are closest to the line instead of being more scattered like the other answers, therefore the answer is x.
PLZ HELP 40 MINUTES LEFT
Which equation can be used to represent the statement?
The sum of one-sixth of a number and negative two is equal to negative two-thirds.
One-sixth + n = negative 2 + two-thirds
One-sixth + n = negative 2 + (negative two-thirds)
One-sixth n + 2 = negative two-thirds
One-sixth n minus 2 = negative two-thirds
Answer:
It's the last one: One-sixth n minus 2 = negative two-thirds
Step-by-step explanation:
Hope this helps!!
Starlight Tree Farm sells Douglas firs and Noble firs. One December they sold 139 more Douglas firs than Noble firs. The total number of trees sold was 377. Which equation could be used to solve for n, the number of Noble fir trees sold?
2n – 139 = 377
n – 139 = 377
n + 139 = 377
2n + 139 = 377
Answer: 2n + 139 = 377
Step-by-step explanation:
Emmy used one-centimeter cubes to build a larger cube. The edges of Emmy's cube are 3 centimeters long. Tim has a cube-shaped box with edges that are 3 times as long as the edges of Emmy's cube. How much larger in volume is Tim's box than Emmy's cube?
Answer:
Tim's box volume is 27 times greater than Emmy's.
Step-by-step explanation:
The volume of a cube is given by the following expression:
volume = l³
Since Emmy's cube have a 3 centimeters long edge, then it's volume is:
volume1 = 3³ = 27 cm³
On the other hand Tim's cube has an edge that is 3 times as long as Emmy's, so it's 9 centimeters long. Therefore it's volume is:
volume2 = 9³ = 729 cm³
The relation between the volume is given by:
ratio = volume2/volume1 = 729/27 = 27
Tim's box volume is 27 times greater than Emmy's.
In a restaurant there are 3 choices for appetizers, 6 choices for entrees, and 4 choices for desserts. How many different meal choices are there if you were to have 1 appetizer, 1 entree, and 1 dessert?
Answer:
72 dessert options available
Step-by-step explanation:
3*6*4=72
If one US dollar is worth 0.79 euros (the currency used by European countries), how many euros would $18 in
US dollars be worth?
1. 18.79 euros
2. 14.22 euros
3. 14.12 euros
4. 7.11 euros
pls help me out pls
Answer:
€14.22
Step-by-step explanation:
0.79 × 18 = 14.22
Answer:
Choice 2
Step-by-step explanation:
1 dollar: 0.79 euros=
18 dollars:x euros
x=18*0.79 or 14.22 euros. Hope this helps!
Write the given.
If one angle of a triangle is 90°, then the other two add to 90°.
Answer:
The other two numbers depend on what type of triangle it is.
Step-by-step explanation:
if if it is isosceles and may vary however if it is scalene the measures of the other two angles can vary greatly and it will not likely be 45 degrees to 45 degrees.
Need answer ASAP pls help
Step-by-step explanation:
Here is the solution. Hope it helps.