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2 years ago

HELP 50 PTS

Mathematics

2 answers:

lana [24]2 years ago

5 0

Step-by-step explanation:

log(7x³/z) = log(7) + log(x³) - log(z).

3log(5) + 2log(x) - log(25) = log(125) + log(x²) - log(25) = log(125x²/25) = log(5x²).

GenaCL600 [577]2 years ago

5 0

Here you go! Hope this helps!! Merry Christmas!

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Solve the equation. x2 18x 81 = 25 a. 14, 4 b. –4, –14 c. 14, –14 d. –4, 4

Snowcat [4.5K]

Answer:

The answer is the option B

$-4,-14$

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}+18x+81=25$

$x^{2}+18x+56=0$

$a=1\\b=18\\c=56$

substitute in the formula

$x=\frac{-18(+/-)\sqrt{18^{2}-4(1)(56)}} {2(1)}$

$x=\frac{-18(+/-)\sqrt{100}} {2}$

$x=\frac{-18(+/-)10} {2}$

$x1=\frac{-18+10} {2}=-4$

$x2=\frac{-18-10} {2}=-14$

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3 years ago

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1) what is the answer to 2^-2x2^-4

lana [24]

Answer:

$\frac{1}{64}$

I hope this helps!

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Name one possible cross section of a sphere

Lisa [10]

A "cross section" is basically the two-dimensional face that you get when you cut a three-dimensional figure a certain way. For example, imagine you're buttering your bread. When you cut a pat of butter off, what shape is left on the butter? A square!

So, imagine cutting a ball in half. What shape is left? A circle!

Answer: circle

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Not sure on how to solve anymore. A)43.92 B)41.45 C)68.87 D)33.1

Alenkasestr [34]

Sin (37°) = opposite side/Hypotenuse

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CV = 55 x (0.601815)
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Gnoma [55]

In space ?? Idk what you mean but I guess it's not possible ?

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