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Alenkinab [10]
3 years ago
12

30 POINTS! PEASE HELP!!!

Mathematics
2 answers:
ohaa [14]3 years ago
7 0

50 cards, as 2x 25 is 50

Temka [501]3 years ago
5 0

Answer:

32

Step-by-step explanation:

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a pack of eight batterys cost 8.99. Bow much does each battery cost , give your answer to the nearest penny​
Ne4ueva [31]

Answer: $1.13

Step-by-step explanation:

6 0
4 years ago
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Find (x+3) (x^2 - 2x -8). Write answer in standard form
Pavlova-9 [17]

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x3+x2-14x-24

Step-by-step explanation:

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A student needed to prepare 500mL of 1X TAE buffer to run a QC gel. The stock solution in the lab is 5X TAE. What volumes of sto
Xelga [282]

Answer:

you need 100ml of 5X TAE and 400ml of water.

Step-by-step explanation:

You need to use a rule of three:

C_1V_1=C_2V_2

where:

\left \{ {{C_1= 5X} \atop {C_2=1X}} \right.

and

\left \{ {{V_1 = V_{TAE}} \atop {V_2=500ml}} \right.

Therefore:

V_{TAE} = \frac{V_2*C_2}{C_1}

V_{TAE} = 100ml

Then just rest the TAE volume to the final Volume and you get the amount of water that you need to reduce the concentration.

3 0
3 years ago
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Please help!!!! I’m unsure of the answers
igomit [66]

Answer:

table:

.1, .25, .35, .2, .1

p(x=4) = .1

p(x<2) = .35

p(3≤x≤4)= .55

1.95, 1.12

Step-by-step explanation:

this is kind of hard to read, but i think i've got it

mean:

0*.1+1*.25+2*.35+3*.2+4*.1= 1.95

The second moment:

0²*.1+1²*.25+2²*.35+3²*.2+4²*.1= 5.05

the variance is the second moment minus the first moment squared (first moment is the mean) and then the standard deviation is the square root of the mean

5.05-1.95²= 1.2475 √1.2475= 1.1169 or 1.12

3 0
3 years ago
8. Which number below is the least?
il63 [147K]

Answer: C

Step-by-step explanation:

Simplified: -1.4, -0.25, -0.2, 0

I hope this helps

             ~Princess <3

7 0
3 years ago
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