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ladessa [460]
4 years ago
15

Please help me with this answer having a hard time

Mathematics
1 answer:
Ipatiy [6.2K]4 years ago
5 0

To solve this you must use the rules of PEMDAS (Parentheses, Exponent, Multiplication, Division, Addition, Subtraction)

In this problem we have double parentheses. Which one should we solve first? The answer to that is always the inner most ones:

13[ 6² ÷ (5² - 4²) + 9]

5² - 4²

^^^Here you will have to first take the square of both values

25 - 16

9

13[ 6² ÷ (9) + 9]

Now for the exponents

13[ 6² ÷ (9) + 9]

6²

36

13[ 36 ÷ 9 + 9]

Now for the division:

13[ 36 ÷ 9 + 9]

36 ÷ 9

4

13[ 4 + 9]

Now for the addition

13[ 4 + 9]

4 + 9

13

13[13]

Now for multiplication

169

Hope this helped!

~Just a girl in love with Shawn Mendes

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a hockey puck travels at a constant speed of 20m/s. what is the speed in mi/h? round to the nearest hundredth.
Mandarinka [93]
60 Seconds=1 Minute
60 Minutes=3600 Seconds
1 Meter=0.000621371 Miles
20*3600=72000 meters
72000/0.000621371= 44.738726 Mi/H
Boom!
6 0
4 years ago
7cm= how many millimeters
ehidna [41]
If 1cm equals 1000 millimeters, then multiply 7 by 1000 and you will get your answer. 7 times 1000 equals 7,000 millimeters.

7*1000
Multiply
Final Answer: 7,000
7 0
4 years ago
Maria has a portfolio consisting of 7 shares of stock A (purchased for $70 per share) and 4 shares of stock B (purchased for $10
Vlad [161]

Answer:

Hence, the expected rate of return after 1 year for Mary's portfolio is 0.17751

Step-by-step explanation:

We have,

Purchase 7 shares of stock A  for $70 per share and 4 shares of stock B for $100 per share then The expected rate of return after 1 year for Mary's portfolio.

Weight invested in stock A is W_x=\frac{7\times 70}{7\times 70+4\times 100}

                                               \Rightarrow W_x=\frac{490}{490+400}\\\Rightarrow W_x=\frac{490}{890}\\\Rightarrow W_x=\frac{49}{89}\\\Rightarrow W_x=0.5505

Weight invested in stock B isW_y=\frac{4\times 100}{7\times 70+4\times 100}

                                             \Rightarrow W_y=\frac{400}{490+400} \\\Rightarrow W_y=\frac{400}{890} \\\Rightarrow W_y=\frac{40}{89} \\\Rightarrow W_y=0.4494

The expected value of the rate of return=W_x\times\;\text{expected rates of stock A}+W_y\times\;\text{expected rates of stock B}

=0.5505\times0.02+0.4494\times0.15

=0.01101+0.06741

=0.17751

4 0
3 years ago
One half liter of lemonade concentrate was added to 3 liters of water. How many 1/3 servings of lemonade can be made?
yuradex [85]

42 servings of lemonade can be made

3 0
3 years ago
Solve |3x + 9| + 6 = 6 Question 4 options: A) x = –3 B) x = 3 or x = –3 C) No solutions D) x = 3
Zanzabum

Answer:

A) x = -3

Step-by-step explanation:

|3(-3) + 9| = 0

|-9 + 9| = 0

|0| = 0

0 = 0

8 0
3 years ago
Read 2 more answers
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