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3 years ago

Evaluate 3(x-1)+1 when x=5

Mathematics

2 answers:

Lana71 [14]3 years ago

4 0

3(5-1)+1

(15-3)+1

12+1

choli [55]3 years ago

3 0

$\huge{\boxed{13}}$

Substitute. $3(5-1)+1$

Subtract. $3*4+1$

Multiply. $12+1$

Add. $\boxed{13}$

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2 years ago

certain computer virus can damage any file with probability 35%, independently of other files. Suppose this virus enters a folde

Ksivusya [100]

Answer:

0.623 is the probability that between 800 and 850 files get damaged.

Step-by-step explanation:

We are given the following information:

We treat virus can damage computer as a success.

P( virus can damage computer) = 35% = 0.35

The conditions for normal distribution are satisfied.

By normal approximation:

$\mu = np = 2400(0.35) = 840\\\sigma = \sqrt{np(1-p)} = \sqrt{2400(0.35)(1-0.35)} = $$23.36$

We have to evaluate probability that between 800 and 850 files get damaged.

$P(800 \leq x \leq 850) = P(\displaystyle\frac{800 - 840}{23.36} \leq z \leq \displaystyle\frac{850-840}{23.36}) = P(-1.712 \leq z \leq 0)\\\\= P(z \leq 0.428) - P(z < -1.712)\\= 0.666 - 0.043 = 0.623 = 62.3\%$

$P(800 \leq x \leq 850) = 62.3\%$

0.623 is the probability that between 800 and 850 files get damaged.

8 0

2 years ago

You have quarters and dimes that total $2.80. Your friend says it is possible that the number of quarters is 8 more than the num

AnnyKZ [126]

Answer:

Step-by-step explanation:

d = number of dimes

2.80 = 0.1d + 0.25 (d + 8 )

2.80 = 0.1d + 0.25d + 2 Combine like terms

2.80 = 0.35d + 2 Subtract 2 from both sides

0.80 = 0.35d Divide both sides by 0.35

d ≈ 2.29

No, it's not possible to have more quarters than dimes when the total is $2.80 because it's not possible to have part of a dime.

5 0

2 years ago

15% converted to a fraction then simplified to lowest terms

mojhsa [17]

Percent means parts out tof 100 so 15%=15/100
divide by 5/5
3/20=lowet terms

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3 years ago

HELP ME HELP ME PLEASE

Y_Kistochka [10]

What is that supposed to mean

3 0

3 years ago

Read 2 more answers