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3 years ago

Evaluate the following expression: 2^3

Mathematics

2 answers:

maw [93]3 years ago

7 0

2^3=2×2×2
2^3=4×2
2^3=8

sleet_krkn [62]3 years ago

3 0

A number raised to a power is equivalent to a number multiplied to itself by the number equal to the power times. In this case, the base number is 2 and the power is equal to 3. so we multiply 2 to itself 3 times equal to 2 * 2 * 2 equal to 8. This is also verified using calculator.

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The average height of 4 children is (15h-3). Two more children join the group with heights of (10h+46) centimeters and (14h-16)

oksian1 [2.3K]

Answer: 123.5 centimeters

Step-by-step explanation:

Let sum of observations be S and number of observations be n.

Average A= $\frac{\text{S}}{\text{n}}$

The average height of 4 children is (15h-3)

$(15h-3)=\frac{S}{4}\\\Rightarrow\ S=4(15h-3)\\\Rightarrow\ S=60h-45$

Also, when two more children join the group with heights of (10h+46) centimeters and (14h-16) centimeters the sum of heights of 6 children will be

$S+(10h+46)+(14h-16)=60h-45+10h+46+14h-16=84h-107$

Now, Average height of 6 students= $\frac{84h-15}{6}$

At h=9

Average height of 6 students= $\frac{84(9)-15}{6}=\frac{741}{6}=123.5\ centimeters$

3 0

3 years ago

How many minutes are there in a leap year

lara31 [8.8K]

There are 527,040 minutes in a leap year :3

7 0

3 years ago

Select all the correct answers.

Schach [20]

Answer:

....................

Step-by-step explanation:

5 0

3 years ago

5/2x - 12 = 18 - 1/3x can yall help me im tryna get my grade up so im not a "failure" to my mom

mote1985 [20]

Answer:

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Step-by-step explanation:

You will need to simplify both sides of the equation, which isolates the variable.

5 0

3 years ago

Chris rode his bike 4 miles west and then 3 miles south. What is the

melamori03 [73]

Answer:

5 miles

Step-by-step explanation:

This is because if you draw a line going west and label it as 4 miles, then draw another line going south and label it 3 miles, you form a right angle, right? So, the fastest way to go back would be taking a diagonal-like route back to the beginning. Does this shape look familiar to you? Right! It's a right triangle. And do the numbers 3, 4, and 5 sound familiar to you? Yup, it's a Pythagorean triplet. If the legs of a right triangle are 3 and 4, the hypotenuse is 5. Why am I saying this? Because, in the drawing you just did, the 4 miles west and 3 miles south were the legs, and the diagonal path back to the beginning is the hypotenuse. Get it now?

Happy to help! :)

7 0

3 years ago