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olga_2 [115]
3 years ago
11

???? Help please you get 40 points if u help

Mathematics
2 answers:
IrinaVladis [17]3 years ago
6 0

Answer:

B) P = 8x + 4

Step-by-step explanation:

Formula:

P= 2( l + w)

P = 2( x + 2 + 3x)

P = 2(4x + 2)

P = 8x + 4

IRISSAK [1]3 years ago
4 0
B) P=8x+4
Hop this helped
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Use the linear combination method to solve the system of equations. Justify each step of your solution. If steps are not explain
earnstyle [38]

Answer:

y=7

x=-7

Step-by-step explanation:

2(-3x - 7y )= 2(-28)

3(2x+ 3y)=3(7)

-6x - 14y = -56

6x + 9y = 21

Add the two equations

-1(0x - 5y)= -1(- 35)

5y = 35

Divide both sides by 5

y=7

Substitution

6x + 9(7) = 21

6x + 63 = 21

Subtract 63 from both sides

6x = -42

Divide both sides by 6

x= - 7

5 0
3 years ago
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a pot of water is being heated up. the temperature of the water can be modeled by the equation with y representing the temperatu
Nadya [2.5K]

Answer:

What was the awnser!? Srry I need help

Step-by-step explanation:

6 0
3 years ago
What is the slope and y-intercept of –2x + 4y = 16<br> please show work!!
Lilit [14]

Answer:

1/2

Step-by-step explanation:

Okay so the find slope you have the put the line in y-mx+b form.  In -2x+4y=16 to get 'y' by its slef you have to add 2y to each side.  4y=16+2x then you have to divide by 4 to get y alone.  y=4+1/2x

Your slope is 1/2

3 0
3 years ago
A fair four-sided die has two faces numbered 0 and two faces numbered 2. Another fair four-sided die has its faces numbered 0, 1
Mandarinka [93]

The two dice have PMFs

P(X=x)=\begin{cases}\dfrac12&\text{for }x\in\{0,2\}\\\\0&\text{otherwise}\end{cases}

P(Y=y)=\begin{cases}\dfrac14&\text{for }y\in\{0,1,4,5\}\\\\0&\text{otherwise}\end{cases}

The sum of the two rolls can take on 8 different values:

W=\begin{cases}0&\text{if }x=0,y=0\\1&\text{if }x=0,y=1\\2&\text{if }x=2,y=0\\3&\text{if }x=2,y=1\\4&\text{if }x=0,y=4\\5&\text{if }x=0,y=5\\6&\text{if }x=2,y=4\\7&\text{if }x=2,y=5\end{cases}

The outcome of either roll is independent of the other, so that

P(X=x\text{ and }Y=y)=P(X=x)P(Y=y)

a. Then PMF of W is

P(W=w)=\begin{cases}\dfrac12\cdot\dfrac14=\dfrac18&\text{for }w\in\{0,1,2,3,4,5,6,7\}\\\\0&\text{otherwise}\end{cases}

b. The histogram is nothing special, same as the discrete uniform distribution over the interval [0, 7].

3 0
4 years ago
Todd wants to find 352 + 116. Break
jekas [21]

Answer

given,

352 + 116

we have to break 116 and use it on open number line

breaking of number 116

116 = 100 + 10 + 6

And addition will be shown in the number line attached below

now,

352 + 100 = 452

452 + 10 = 462

462 + 6 = 468

we know

sum of

352 + 116 = 468

8 0
3 years ago
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