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3 years ago

Give full working and explanation

Mathematics

1 answer:

vlada-n [284]3 years ago

8 0

Answer:

1309 marbles

Step-by-step explanation:

Kadon has 727 marbles.

Simon has: 727 - 145 = 582 marbles

All together:

Kadon marbles + Simon marbles

727 marbles + 582 marbles

1309 marbles

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[Quick Answer Needed] Which of the following shows the extraneous solution to the logarithmic equation?

Nitella [24]

Answer:

Step-by-step explanation:

Given the logarithmic equation

$\log_4x+\log_4(x-3)=\log_4(-7x+21)$

First, notice that

$x>0\\ \\x-3>0\Rightarrow x>3\\ \\-7x+21>0\Rightarrow 7x$

So, there is no possible solutions, all possible solutions will be extraneous.

Solve the equation:

$\log_4x+\log_4(x-3)=\log_4x(x-3),$

then

$\log_4x(x-3)=\log_4(-7x+21)\\ \\x(x-3)=-7x+21\\ \\x^2-3x+7x-21=0\\ \\x^2+4x-21=0\\ \\D=4^2-4\cdot 1\cdot (-21)=16+84=100\\ \\x_{1,2}=\dfrac{-4\pm 10}{2}=-7,\ 3$

Hence, $x=3$ and $x=-7$ are extraneous solutions

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3 years ago

How do I find the value of “y” in this equation 3/2y + 3/2

navik [9.2K]

Answer:

isolate the vvariable

Step-by-step explanation:

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3 years ago

1) 5x + 3 = 23<br> Is the value of x 4

Nataly [62]

Answer:

X = 4

Step-by-step explanation:

5x + 3 = 23

Subtract 3 from both sides: 5x = 20

Divide both sides by 5: x = 4

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3 years ago

If the image below is dilated with a scale factor of 2, what is the perimeter of the dilated image?

garri49 [273]

Answer:

the answer is 24

Step-by-step explanation:

i got it correct on my test

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3 years ago

Is 4/6 = 9/12 not proportionate

andre [41]

$\text{If}\ \dfrac{a}{b}=\dfrac{c}{d}\ \text{is proportional, then}\ ad=bc.\\\\\text{We have}\ \dfrac{4}{6}=\dfrac{9}{12}.\ \text{Cross multiply}\\\\(4)(12)=(6)(9)\\\\48=54\ FALSE\\\\Answer:\ NOT\ PROPORTIONAL$

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3 years ago