3 years ago

WILL GIVE BRAINLEST PLS HELP

Mathematics

2 answers:

Lelechka [254]3 years ago

8 0

79200 feet in 15 miles

3600 seconds in hour

bekas [8.4K]3 years ago

4 0

Answer:

79200 feet in 15 miles

3600 seconds in hour

Step-by-step explanation:

brainliest please, just tryna rank up

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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

Factor the expression -24x -30

morpeh [17]

Answer:

-6(4x+5)

Step-by-step explanation:

-24 = -6 * 4

-30 = -6 * 5

6 is a common factor of both 24 and 30.

-6(4x) = -24x

-6(5) = -30

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3 years ago

Read 2 more answers

An attic floor is shaped like a triangle with a height of n yd and a base of 6 yd. Which expression represents the area of the f

Gwar [14]

I think it is 2..... i am not really sure

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What is the value of y in the equation 2 + y = −3?

SOVA2 [1]

I believe that y is equal to -5.

y=-5

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the ratio of red marbles to blue marbles in a bag is 3:4. which of the the following is a possible total number of marbles?

Vitek1552 [10]

3:4
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if u either multiply or divide a number from one side, u must do the same calculation to the other side. hope that helps :)

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