All categories

3 years ago

What is PEMDAS? and how do you use it?

Mathematics

1 answer:

gulaghasi [49]3 years ago

6 0

Answer:

<h2>please excuse my dear aunt sally</h2>

Step-by-step explanation:

PEMDAS is an acronym for the words parenthesis, exponents, multiplication, division, addition, subtraction. For any expression, all exponents should be simplified first, followed by multiplication and division from left to right and, finally, addition and subtraction from left to right.

You might be interested in

What is the property of 96+13=13+96?

Basile [38]

Communitive property

5 0

3 years ago

Jamal hiked on two trails. The first trail was 7 1/3 miles long, and the second trail was 1 9/11 times as long as the first trai

algol [13]

9514 1404 393

Answer:

20 2/3 miles

Step-by-step explanation:

Altogether Jamal hiked 1 + 1 9/11 times the length of the first trail:

(2 9/11)(7 1/3) = (31/11)(22/3) = 62/3 = 20 2/3

Jamal hiked 20 2/3 miles.

7 0

3 years ago

In how many different ways can a committee of 4 students be chosen from 6 students

AnnyKZ [126]

If order mattered, then there would be 6*5*4*3 = 30*12 = 360 different ways to form the committee. However, no single member outranks the other. Each member has equal ranking. So order does not matter.

Since order does not matter, we must consider all of the ways to arrange a single group of 4 people. That is 4! = 4*3*2*1 = 24 ways. We overcount by a factor of 24 when order doesn't matter which is why we divide the previous result (360) by 24 to get 360/24 = 15

Answer: 15

Note: you can use the combination formula n C r = (n!)/(r!*(n-r)!) with n = 6 and r = 4 to get the same answer

3 0

3 years ago

I am a number. I am the

LenaWriter [7]

Answer:

Step-by-step explanation:

to find side length of squares take square root of areas

first square side length: 9

second square side length: 6

difference between 9 and 6 is subtraction, 9-6=3

4 0

3 years ago

For the graph, which are possible functions ƒ, g, and h?

lesya692 [45]

Answer:

The third option is correct

$\displaystyle h(x)=\left ( \frac{10}{3} \right )^x$

$\displaystyle g(x)=\left ( \frac{7}{4} \right )^x$

$\displaystyle f(x)=\left ( \frac{9}{8} \right )^x$

Step-by-step explanation:

Exponential function

The exponential function is usually expressed as

$f(x)=Cr^{kx}$

If both C and k are positive, then f is increasing in all of its domain. Same happens if both are negative. They all have one point in common: (0,C)

The graph shows three functions, all increasing and in all of them (given the options for the answer) have C=1 and k=1, so the equation for each one is

$f(x)=r^{x}$

When x=1, f(1)=r lets us know the value of r

From the graph we can see that the value of r is the greatest for h(x). The next value of r is that one for g(x). Finally, f(x) has the smallest r. That means that

$h(1)>g(1)>f(1)$