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3 years ago

What is five ninths plus four sixths

Mathematics

2 answers:

ra1l [238]3 years ago

8 0

The answer would be
exact : 11/9
decimal 1.2 repeating
mixed number : 1 2/9

Minchanka [31]3 years ago

3 0

Answer: 1.22222222222

Step-by-step explanation:

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a hand of 5-card draw poker is a simple random sample from the standard deck of 52 cards. How many 5 draw poker hands are there

emmasim [6.3K]

Answer:

2,598,960

Step-by-step explanation:

It is a combination because order doesn't matter. You wouldn't want to call A-K-Q-J-10 of hearts a different combination than 10-J-Q-K-A.

52 C 5 = 2,598,960

6 0

2 years ago

Solve the equation 3(x+2)=5(x-2)

Sladkaya [172]

Answer:

3( x + 2 ). = 5( x - 2)

3x + 6 = 5x - 10

-2x = - 16 

minus,minus cancel

x = 16/2 

x = 8 

8 0

3 years ago

Read 2 more answers

Consider the equality xy k. Write the following inverse proportion: y is inversely proportional to x. When y = 12, x=5.

skelet666 [1.2K]

Answer:

$y=\dfrac {60} {x}$ or $xy=60$ (depending on your teacher's format preference)

Step-by-step explanation:

<h3>Proportionality background</h3>

Proportionality is sometimes called "variation". (ex. " 'y' varies inversely as 'x' ")

There are two main types of proportionality/variation:

Direct
Inverse.

Every proportionality, regardless of whether it is direct or inverse, will have a constant of proportionality (I'm going to call it "k").

Below are several different examples of both types of proportionality, and how they might be stated in words:

$y=kx$ y is directly proportional to x
$y=kx^2$ y is directly proportional to x squared
$y=kx^3$ y is directly proportional to x cubed
$y=k\sqrt{x}}$ y is directly proportional to the square root of x
$y=\dfrac {k} {x}$ y is inversely proportional to x
$y=\dfrac {k} {x^2}$ y is inversely proportional to x squared

From these examples, we see that two things:

things that are directly proportional -- the thing is multiplied to the constant of proportionality "k"
things that are inversely proportional -- the thing is divided from the constant of proportionality "k".

<h3>Looking at our question</h3>

In our question, y is inversely proportional to x, so the equation we're looking at is the following $y=\dfrac {k} {x}$ .

It isn't yet clear what the constant of proportionality "k" is for this situation, but we are given enough information to solve for it: "When y=12, x=5."

We can substitute this known relationship pair, and find the "k" that relates this pair of numbers:

<h3>Solving for k, and finding the general equation</h3>

General Inverse variation equation...

$y=\dfrac {k} {x}$

Substituting known values...

$(12)=\dfrac {k} {(5)}$

Multiplying both sides by 5...

$(12)*5= \left ( \dfrac {k} {5} \right ) *5$

Simplifying/arithmetic...

$60=k$

So, for our situation, k=60. So the inverse proportionality relationship equation for this situation is $y=\dfrac {60} {x}$ .

The way your question is phrased, they may prefer the form: $xy=60$

7 0

2 years ago

Given F(x) =x^2, choose whether the graph moves up down left or right.

malfutka [58]

Answer:

Left 7

Step-by-step explanation:

f(x)=a(x-h)^2+k

f(x)=(x-(-7))^2

-7 of x is to the left

8 0

3 years ago

PLEASE ANSWER!!!!!! WILL MARK BRAINLIEST!!!!!!

docker41 [41]

Answer:

sinB= 3/5, tanA=4/3, cosB=4/5

Step-by-step explanation:

5 0

3 years ago