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3 years ago

Simplify. 12+(38−18)2

2 answers:

6 0

Assuming you meant 12+(38-18)²

PEMDAS
order of operations
so first simplify inside the paretnahsees
38-18=20

now we has
12+(20)²
exponents
20²=400

now we has
12+400
addition
412

julia-pushkina [17]3 years ago

3 0

The answer is 52. remember PEMDAS (parentheses, exponents, multiplication, division, addition, subtraction) you can use "please excuse my dear aunt sally" to help you remember! :)

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Find the sum and product of the roots. 3x^<br> 2 - 4x - 7 = 0

victus00 [196]

Given the quadratic function, to get the roots we factorize:
3x²-4x-7=0

3x²+3x-7x-7=0
3x(x+1)-7(x+1)=0
(3x-7)(x+1)=0
thus the roots are
x=-1 or x=3/7
thus the sum of the roots will be:
-1+3/7
=-4/7

6 0

3 years ago

The commute time to work in the U.S. Has a bell shaped distribution with a population mean of 24.4 minutes and a population stan

Alexxx [7]

Answer:

1. 0.9544

2. 0.0228

3. 0.0228

Step-by-step explanation:

The computation is shown below;

As we know that

At Normal distribution

$P(X < A) = P(Z < \frac{(A - mean)}{standard deviation})$

As per the question, the data provided is as follows

Mean = 24.4 minutes

Standard deviation = 6.5 minutes

Based on the above information

P(11.4 < X < 37.4) = P(X < 37.4) - P(X < 11.4)

= P(Z < (37.4 - 24.4) ÷ 6.5) - P(Z < (11.4 - 24.4) ÷ 6.5)

= P(Z < 2) - P(Z < -2)

= 0.9772 - 0.0228

= 0.9544

2. P(X < 11.4) = 0.0228

3. P(X ≥ 37.4) = 1 - P(X < 37.4)

= 1 - 0.9772

= 0.0228

5 0

3 years ago

On a store shelf, the ratio of tomato soup cans is 9 to 4. There are 36 tomato soup cans on the shelf. What is the total number

sp2606 [1]

Answer:

Step-by-step explanation:

I think not really sure

6 0

2 years ago

What would make the statement 8^x=1

zimovet [89]

x = 0

0 is your answer

Anything to the power of 0 is equal to 1

hope this helps

5 0

3 years ago

Which of the following is true for the relation f(x)-x^2+8

neonofarm [45]

Answer: A

Step-By-Step Explanation: if n is greater than or equal to 2 is an add integer then the domain of: f(x)-x^2+8 is the solution to the inequality 2+8 greater than or equal to 0. which of the following statements is true?

3 0

1 year ago