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k0ka [10]
3 years ago
5

Darel went to the mall and spent $41. He bought several t-shirts that ach cost

Mathematics
1 answer:
Ghella [55]3 years ago
7 0

Answer:

3

Step-by-step explanation:

12x+5(1)=41

12x=-5+41

12x=36

x=36/12

x=3

12(3)+5(1)=

36+5=41

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Joy bought 288 small pieces of candy to share with her friends. She divided the candy into 18 bags. One of the bags will be shar
mariarad [96]

Answer:

32

Step-by-step explanation:

You must divide 288 by 18 and then double the answer you get.

7 0
3 years ago
How many times do you need to regroup to subtract 847-268? How do you know?
Andrej [43]

Answer:

You can regroup it 3 times and a remainder of 43. :) hope it helped!

Step-by-step explanation:

6 0
2 years ago
You invested money in two funds. Last year, the first fund paid a dividend of 9% and the second a dividend of 3%, and you receiv
Elden [556K]
If the amount of money you invested in the first fund is x and the second fund y, then 9% (or 0.09 by moving the decimal 2 spots)*x+0.03*y=1047 since the first fund paid 9% and the second 3%. In addition, for this year, we get 
0.1*x+0.01*y=811. 
We also have 0.09*x+0.03*y=1047, so we can multiply the top equation by -3 and add it to the second to get -0.21x=-1386. Dividing both sides by -0.21, we get x=6600. In addition, since 0.1*x+0.01*y=811, we can plug 6600 in for x to get 660+0.01*y=811 and by subtracting 660 from both sides we get 0.01*y=151. Multiplying both sides by 100 (since 0.01*100=1), we get y=15100
6 0
3 years ago
Find the non-extraneous solutions of the square root of the quantity x plus 6 minus 5 equals quantity x plus 1.
denis23 [38]
(x+6)^(1/2)-5=x+1
(x+6)^(1/2)=x+6
((x+6)^(1/2))^2=(x+6)^2
x+6=x^2+12x+36
0=x^2+11x+30
(-11+(11^2-4(1)(30))^(1/2))/2
(-11+((1)^(1/2))/2
(-11+1)/2=-5
(-11-1)/2=-6
((-6)+6)^1/2-5=(-6)+1
(0^(1/2))-5=-5
-6 is non-extraneous
((-5)+6)^1/2-5=(-5)+1
(1^1/2)-5=-4
1-5=-4
-4=-4
-5 is non-extraneous

3 0
2 years ago
The surface area, S, of a sphere of radius r feet is S = S(r) = 4πr^2. Find the instantaneous rate of change of the surface area
8090 [49]
Instantaneous rate of change = S'(r) = 8πr
S'(8) = 8π(8) = 64π

Therefore, the instantaneoud rate of change of the <span>surface area with respect to the radius r at r = 8</span>  is 64π
7 0
3 years ago
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