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3 years ago

4 x (22+5) Simplify the expression.

Mathematics

1 answer:

Flura [38]3 years ago

8 0

Answer:

the simplified expression is 108x

Step-by-step explanation:

4x(22+5)

you can remove the parenthesis by multiplying 4x by everything inside of them.

4x * 22 + 4x * 5

88x + 20x

108x

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Two students are registered for the same class and attend independently of each other, student a 90% of the time and student b 7

IRISSAK [1]

The probability of student A is 15/44

Given student A is 70% of time and student B is 60% of time

We need to find the probability of student A

Using formula of conditional probability is P(X/Y) = P(X and Y) / P(Y)

Here X = A and Y = A or B

Therefore,

P(A/A or B) = P(A and (A OR B) / P (A or B)

Now, There is none complement for at least 1

We know that Student A attends 70 % of time

So , his absence is 30% of the time .

Hence the probability of absence is 0.3

Now Considering B in the similar way

We get,

Probability of the absence is 0.4

They are both absent (0.3)(0.4)= 0.12

Here we can say that 12 % of time both are absent

So one or another present on that time is 88%

The probability of present of the time is 0.88

Now calculating the probability,

P(A/A or B) = P(A and (A OR B) / P (A or B)

= 0.3/0.88

= 30/88

= 15/44

Hence the Probability Of A is 15/44

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4 0

2 years ago

Francis works 40 hours a week as an office manager. If she made $18,200

Blizzard [7]

Answer:

C. $8.75

Step-by-step explanation:

52 weeks in a year times that by 40 to get how many hours she worked in the entire year

She worked for 2080 hours last year

Now divide 18,200 by 2080 to get how much she makes an hour

7 0

4 years ago

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Please help me do this question

Minchanka [31]

Answer:

Step-by-step explanation:

3 0

3 years ago

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You purchase a new car today.the value of that car depreciates based on the function f(t)=12,000(0.96)^t, where t is measured in

Alex

Considering the definition of exponential function, the value of the car is 11,287.25 dollars.

<h3>What is exponential function</h3>

An exponential function is one in which the independent variable x appears in the exponent and has a constant a as its base. Its expression is:

f(x)= aˣ

Being a a positive real, a > 0, and different from 1, a ≠ 1.

When 0 < a < 1, then the exponential function is a decreasing function and when a > 1, it is an increasing function.

<h3>What is the price of the car</h3>

In this case, the value of that car depreciates based on the function f(t)=12,000× $0.96^{t}$ where t is measured in years after purchase.

After 3/2 years, the value of the car is calculated as:

f(3/2)=12,000× $0.96^{3/2}$

Solving:

Finally, the value of the car is 11,287.25 dollars.

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2 years ago

Find g(-7) for g(x) = -8x+1

Vikentia [17]

Answer:

Step-by-step explanation:

if we have g(x)=- 8x+1

we will replace x with -7

g(-7)=56+1=57

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3 years ago