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2 years ago

A recipe requires 3 cups of flour to make 27 dinner rolls. How much flour is needed to make 9 rolls.

Mathematics

1 answer:

amid [387]2 years ago

5 0

9 rolls* (3 cups of flour/ 27 dinner rolls)= 1 cup of flour.

1 cup of flour is needed to make 9 rolls~

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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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2 years ago

For which inequality is x = 5 a solution? A x<2 B. x>9 C x<18 D. x> 42

marishachu [46]

Answer:

Step-by-step explanation:

because 5 is smaller then 18

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2 years ago

Evaluate the expression when c = 4, d = 1 and e = 10. d+18

cestrela7 [59]

Substitute 1 for d. d+18=1+18=19

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2 years ago

If f(x)=-5x-11, then f^-1(x)=

Ludmilka [50]

F^-1(x) is the inverse so...
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3 years ago

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