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Ludmilka [50]
3 years ago
13

Can you help me with this question i dont get it

Mathematics
2 answers:
KengaRu [80]3 years ago
6 0
I think the answer is c
Marizza181 [45]3 years ago
3 0
The answer is c or A
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What is the rule for point-slope?
Gemiola [76]
If your referring to the form then its y-y1=m(x-x1)
6 0
3 years ago
How can complex fractions be used to solve problems involving ratios
strojnjashka [21]
When you have ratios, and some unknowns, you can create complex fractions from them. Bring them to the same denominator, and solve for x.

Example - we have this proportion:
2-x
5-45
And we can change it into fraction:
\frac{2}{5}=\frac{x}{45}

\frac{2*9}{5*9}=\frac{x}{45}

\frac{18}{45}=\frac{x}{45}
18=x

In case of more complex fractions it may come in handy.
5 0
3 years ago
Logarithm 2. The alkalinity of a fluid (pH) can be modeled in terms of its hydrogen ion concentration (H^+,measured in moles/lit
makkiz [27]

ok. We are given the following equation:

ph=-\log (H)

Where:

\begin{gathered} P=\text{ alkalinity} \\ H=\text{ hydrogen ion concentration} \end{gathered}

Since we are asked to determine "H" we will solve for "H" in the equation. To do that we will first multiply both sides by -1:

-ph=\log (H)

Now, we will use the following property of logarithms:

\log _aB=c\rightarrow B=a^c

Applying the property and having into account that:

\log (H)=\log _{10}(H)

We get:

10^{-pH}=H

Now we substitute the given value of "pH = 4.5":

10^{-4.5}=H

Solving the operation:

0.000032=H

Therefore, the hydrogen ion concentration of the fluid is 0.000032

7 0
1 year ago
Which of these functions has the same graph but shifted to the left?
kogti [31]

Step-by-step explanation:

the second and the 6th options keep the same graph but shift it to the left.

the other options :

the first option changes the graph (the factor -2 stretched and flips the graph).

the third and the 5th options shift the graph up and down. but not to the left.

the 4th option shifts it to the right.

when you add a constant inside the x terms, you shift to the left.

when you subtract a constant inside the x terms, you shift to the right.

e.g. when having f(x+2), then everything, that should happen at x+2 happens already at x. 2 units earlier, and therefore a shift to the left.

in the other direction, f(x-2) makes everything that should have happened at x-2 happen finally at x. so, everything shifts 2 units to the right.

6 0
1 year ago
Find the area of the regular polygon.<br>Round to the nearest tenth.<br>16 ft​
Sladkaya [172]

<u>Given</u>:

Given that the side of the regular polygon is 16 feet.

We need to determine the area of the polygon.

<u>Area of the polygon:</u>

The area of the polygon can be determined using the formula,

Area =\frac{s^2 n}{4 \ tan \frac{180}{n}}

where n is the number of sides,

s is the side length.

Substituting n = 3 and s = 16, we get;

Area =\frac{16^2 (3)}{4 \ tan \frac{180}{3}}

Simplifying, we get;

Area =\frac{(256) (3)}{4 \ tan \ 60}

Area = \frac{768}{6.928}

Dividing, we get;

Area = 110.85

Rounding off to the nearest tenth, we have;

Area = 110.9

Thus, the area of the regular polygon is 110.9 square units.

8 0
3 years ago
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