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Post New Question
All Questions
+0
237665 Questions
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429
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+4
Simple algebra question
Someone please help. Learning geometric sequences. n represents a term in a geometric sequence.
How does one go from this
a(n)= 1/2 • 4n-1 To : a (n)= 1/8 • 4n
Do you divide or what do you do. I figured diving by 4 would
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flemij
Sep 29, 2020
0
726
3
HALP!
Laura will have seven test scores at the end of the semester. Each of the scores is a positive integer less than or equal to 100. Her first five scores are 80,83,87,94, and 96. How many different values are possible for the median of her
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Guest
Sep 29, 2020
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576
1
parabola
what is the equation of the following graph in vertex form?
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Guest
Sep 29, 2020
0
1147
3
Jonathan’s class has 30 boys. Of the students in his class, 60% are girls. How many girls are in Jonathan’s class? A. 75 B. 60 C. 45 D.
Jonathan’s class has 30 boys. Of the students in his class, 60% are girls. How many girls are in Jonathan’s class? A. 75 B. 60 C. 45 D. 20 Jonathan’s class has 30 boys. Of the students in his class, 60% are girls. How many girls are in Jonathan’s class?
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Guest
Sep 29, 2020
0
643
2
Jonathan’s class has 30 boys. Of the students in his class, 60% are girls. How many girls are in Jonathan’s class? A. 75 B. 60 C. 45 D.
Jonathan’s class has 30 boys. Of the students in his class, 60% are girls. How many girls are in Jonathan’s class? A. 75 B. 60 C. 45 D. 20
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Guest
Sep 29, 2020
0
473
1
janaya shelton jean
how many times does 7/3 go into 14/15
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Guest
Sep 29, 2020
0
868
1
algebra
A baseball is thrown upward at a velocity of 32 feet per second from a height of 7 feet. The equation to represent the height (h) after t seconds is h=−16t2+32t+7. How long before the ball hits the ground? (Round to the nearest hundredth
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Guest
Sep 29, 2020
-1
602
4
+223
Pls help!
In triangle ABC, AB = BC = 25 and AC = 40. What is sin angle ACB?
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Noori
Sep 29, 2020
0
522
3
help please
How many ways are there to put 4 indistinguishable balls in 3 distinsuishable boxes?
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Guest
Sep 29, 2020
-1
616
2
+223
I dont get this...
I dont know why in the question posted here: https://web2.0calc.com/questions/cphill-i-need-geo-help one of the sides is tan 70. Could someone help me with this question?
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Noori
Sep 29, 2020
0
474
1
geometry
Find the area of the triangle with side lengths sqrt(70), sqrt(70), and sqrt(28).
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Guest
Sep 29, 2020
0
508
1
interest
A man invests his savings in two accounts, one paying 6% and the other paying 10% simple interest per year. He puts twice as much in the lower-yielding account because it is less risky. His annual interest is $2,640. How much did he invest at each rate?
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Guest
Sep 29, 2020
0
519
2
The Euclidean Algorithm math help
For all positive integers n, the nth triangular number T_n is defined as T_n = 1+2+3+...+ n$. What is the greatest possible value of the greatest common divisor of 4T_n and n-1?
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Guest
Sep 29, 2020
0
552
2
Decimals
What is the 453rd digit to the right of the decimal point in the decimal expansion of ?
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Guest
Sep 29, 2020
0
625
1
Need help on how to calculate this ((-4a)-sqrt(4a))/(2a)=0.75
((-4a)-sqrt(4a))/(2a)=0.75
Explain step by step, how to calculate it
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Guest
Sep 29, 2020
0
598
1
Keddy and Raj saved the same amount of money. After Keddy lent $22 to Raj, Raj had 5 times as much money as Keddy. How much did Raj have in
Keddy and Raj saved the same amount of money. After Keddy lent $22 to Raj, Raj had 5 times as much money as Keddy. How much did Raj have in the end?
Pls teach me how to do!
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Guest
Sep 29, 2020
0
592
1
Help
An ambulance travels at 40 mph and can follow a 20-mile route making no stops to get to the hospital. A helicopter travels at one mile per minute, and the air route is 15 miles to get to the same hospital. However, the helicopter takes three minutes for
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Guest
Sep 29, 2020
+10
652
1
+98
THIS IS OFF-TOPIC...
Hi all! So basically the AoPS staff doesn't want me to post anymore on this site (if it has anything to do with AoPS), so I'm rarely going to post from now on. Even if I were to post, it wouldn't be all of the steps to the the solution of a problem; it
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off-topic
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joliel3
Sep 29, 2020
0
384
1
please help with this!
What is angle FEC?
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Guest
Sep 29, 2020
0
904
1
please help
The school zone in front of your school has a posted speed limit of 25 mi/h, which is about 11 m/s. Let’s examine the stopping of a car in several different situations.
The driver is looking at her phone and has a total reaction time of 4.6 seconds
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Guest
Sep 29, 2020
0
622
1
help please
If m1= (4x + 7), m2= (15x - 17), and m3 =(6x - 13)", thenfind the value of x.
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Guest
Sep 29, 2020
0
542
1
geometry
Solve for a.
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Guest
Sep 29, 2020
0
472
1
RECURSIVE SEQUENCES
The sequence a_n is defined by a_1 = 1/2 and a_n = a_{n - 1}^2 + a_{n - 1} for n greater than or equal to 2. Prove that 1/{a_1 + 1} + 1/{a_2 + 1} + ...+ 1/{a_n + 1} < 2 for all n greater than or equal to 1.
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Guest
Sep 29, 2020
0
445
2
Circles and Triangles Help Please
Four circles with radii , , , and are externally tangent to one another, where is the smallest radius. Compute .
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Guest
Sep 29, 2020
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