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kiruha [24]
3 years ago
15

Can you help or tell answer for numbers 1 2 3 4

Mathematics
1 answer:
Masteriza [31]3 years ago
6 0
Here you go, learn from this child.

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Transactions to a computer database are either new items or changes to previous items. the addition of an item can be completed
sashaice [31]

P(<100) = P((new or change) & <100) = P(new & <100) + P(change & <100)

... = P(<100 | new)*P(new) + P(<100 | change)*P(change)

... = 0.90*0.70 + 0.20*0.30

... = 0.63 + 0.06 = 0.69 . . . . probability of completing a transaction in < 100 ms

4 0
3 years ago
A scientist has a container of 2% acid solution and a container of 5% acid solution. How many fluid ounces of each concentration
algol [13]

Let 'a' be the number of ounces of 2%-solution in the 25-ounce mixture

and 'b' be the number of ounces of 5%-solution in the 25-ounce mixture.

Since, fluid ounces of each concentration should be combined to make 25 fl oz.

So, a+b=25 (Equation 1)

And, a container of 2% acid solution and a container of 5% acid solution should be combined to make 25 fl oz of 3.2% acid solution.

So, a of 2% + b of 5% = 3.2% of 25

(a \times \frac{2}{100})+(b \times \frac{5}{100})= 25 \times \frac{3.2}{100}

(0.02a)+(0.05b)= 0.8

Multiplying the above equation by 100, we get

2a+5b=80 (Equation 2)

Substituting the value of a=25-b in equation 2, we get

2(25-b)+5b=80

50-2b+5b=80

50+3b=80

3b=30

b=10

Since, a=25-b

a= 25-10

a=15.

So, 15 fluid ounces of 2% solution combined with 10 ounces of the 5% solution to create a 25-ounce mixture at 3.2% concentration of acid.

7 0
3 years ago
2x+7y=-20, y=3x+7. solve using elimination
Setler79 [48]

Answer:

(x,y) = (-3,-2)

Step-by-step explanation: Please brainliest!

8 0
3 years ago
What is the effect on the graph of the function f(x) = 2x when f(x) is replaced with f(−
olasank [31]
It would be replaced with f(-2) which is the reciperacle of 2x
4 0
3 years ago
Read 2 more answers
How do you do this??
ruslelena [56]

Answer:

bxc+ax32=0

Step-by-step explanation:

7 0
3 years ago
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