2 years ago

Question 2 (3 points)

Mathematics

1 answer:

Sauron [17]2 years ago

6 0

The answer is D! This shape is a pentagon and has 3 180° angles. 3x180 is 540.

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Slope is found by dividing the change in ____ by the change in ____. x; y y; x

bekas [8.4K]

Answer:

Change in Y by the Change in X.

Step-by-step explanation:

Slope can be found by dividing the rise (change in y) by the run (change in x).

$m =\frac{rise}{run} = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

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2 years ago

M−4+m−5 how do i solve this?

Ivanshal [37]

Answer:

2m-9

Step-by-step explanation:

m-4+m-5

=m+m-4-5

=2m-9

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3 years ago

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The equation for the pH of a substance is pH = –log[H+], where H+ is the concentration of hydrogen ions. Which equation models t

Elden [556K]

$\bf \textit{Logarithm Cancellation Rules}
\\\\
log_a a^x = x\qquad \qquad \boxed{a^{log_a x}=x}\\\\
-------------------------------\\\\
pH=-log(H+)\qquad \stackrel{pH}{7.2}=-log(H+)\implies -7.2=log_{10}(H+)
\\\\\\
10^{-7.2}=10^{log_{10}(H+)}\implies 10^{-7.2}=H+\implies \cfrac{1}{10^{7.2}}=H+$