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All Questions
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230469 Questions
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887
1
The half-life of radium is 1620 years
The half-life of radium is 1620 years. If a laboratory has 12 grams of radium, how long will it take before it has 4 grams of radium left?
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Guest
Oct 20, 2020
0
259
0
Calcule as derivadas parciais:
z= (x^2)-(3y^3)+(4x^2y^3)
Guest
Oct 20, 2020
0
409
1
six-sided die four times
If I roll a fair, regular six-sided die four times, what is the probability that I will roll the number 3 exactly once?
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Guest
Oct 20, 2020
0
529
3
function
Let
f(x) = 2x^2 - 3 if x <= 2
f(x) = ax - 7 if x > 2
read more ..
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Guest
Oct 20, 2020
0
474
1
f(x) = 3x - 1. What is f(f(f(17)))?
f(x) = 3x - 1. What is f(f(f(17)))?
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Guest
Oct 20, 2020
0
552
2
A movie is shown 6 times every day from November 24 through December 19. How many times was the movie shown in all?
A movie is shown 6 times every day from November 24 through December 19. How many times was the movie shown in all?
(Note: The month of November has 30 days.)
A. 162
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Guest
Oct 20, 2020
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598
3
+167
GEOMETRY
a and b please help. Thank you if you do! :D
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kijijij
Oct 20, 2020
0
470
1
There are values A and B
There are values A and B such that (x + B) / (x^2-7x+10) = A/(x-2) + 3/(x-5).
Find A+B
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Guest
Oct 20, 2020
Oct 19, 2020
0
431
1
Hard math.
The football team has a total of 25 jerseys. There are 10 medium-sized jerseys. What percent of the jerseys are medium-sized jerseys?
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Guest
Oct 19, 2020
0
438
2
HELp
Whats 0 divided by 0?
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Guest
Oct 19, 2020
0
624
1
a varies inversely with b^2
Suppose that a varies inversely with b^2. If a=9 when b=2, find the value of a when b=8 .
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Guest
Oct 19, 2020
0
307
1
Find all values of r such that floor(r) + r = 13.2.
Find all values of r such that floor(r) + r = 13.2.
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Guest
Oct 19, 2020
0
1168
1
There are two mixtures of paint,
There are two mixtures of paint,
Mixture A is made with 5 cups of purple paint and 2 cups of white paint.
read more ..
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Guest
Oct 19, 2020
0
715
2
The letters of the alphabet are given numeric values based on the two conditions below. Only the numeric values of -2,-1,0,1 and 2 are used.
The letters of the alphabet are given numeric values based on the two conditions below.
Only the numeric values of -2,-1,0,1 and 2 are used.
Starting with A and going through Z, a numeric value is assigned to each letter according
read more ..
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Guest
Oct 19, 2020
0
481
1
asymptotes
A function f has a horizontal asymptote of y = -4, a vertical asymptote of x = 8, and an x-intercept at (2,0).
Let f be of the form
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Guest
Oct 19, 2020
0
477
1
a baseball was thrown strait up reaches a maximum height of 14m what is the acceleration experienced by the ball?
a baseball was thrown strait up reaches a maximum height of 14m what is the acceleration experienced by the ball?
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Guest
Oct 19, 2020
0
474
1
+16
marketing
In one day, Joey's Discount CD store has the following sales for each type of music: heavy metal - $99.50 / rap - $125.87 / country - $101.44 / pop - $218.00 / jazz - $36.75. What percentage of the day's sales were for country music? *
(also
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leenao7
Oct 19, 2020
0
335
1
4 balls in 3 boxes
How many ways are there to put 4 balls in 3 boxes if two balls are indistinguishably green, one ball is red, one ball is blue, and the boxes are distinguishable?
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Guest
Oct 19, 2020
0
530
1
+16
marketing math
During the first quarter of the Super Bowl, Chris keeps track of actual game time vs. time devoted to commercials. Game time amounted to 35 minutes; commercials comprised 14 minutes. What fraction of the total time was the actual game shown? *
read more ..
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leenao7
Oct 19, 2020
0
435
1
+16
please help
Debbie earns $8.75/hour at the dress shop, plus a 4% commission on all sales. She works from 2-7 p.m. on Tuesday and Thursday this week and her total sales are $2,075.00. How much does Debbie earn this week? *
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leenao7
Oct 19, 2020
0
296
0
marketing math question #3
Debbie earns $8.75/hour at the dress shop, plus a 4% commission on all sales. She works from 2-7 p.m. on Tuesday and Thursday this week and her total sales are $2,075.00. How much does Debbie earn this week? *
Guest
Oct 19, 2020
0
593
1
x,y , and z are positive real numbers
If x,y , and z are positive real numbers satisfying:
log(x/y) = a
log(y/z) = 15
log(z/x) = -1
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Guest
Oct 19, 2020
0
335
2
I need help asap
in the SuperLottery, three balls are drawn (at random) from ten white balls numbered from $1$ to $10$, and one SuperBall is drawn (at random) from ten red balls numbered from $11$ to $20$. When you buy a ticket, you choose three numbers from $1$ to $10,$
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Guest
Oct 19, 2020
0
296
1
positive real number
The value of (1 + i)^16 is a positive real number. What is it?
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Guest
Oct 19, 2020
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