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Mathematics

1 answer:

7nadin3 [17]3 years ago

5 0

A) false
3(5)-5
15-5
10

b)True
3(6)-5
18-5
13

c) false
3(7)-5
27-5
22

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Given f(x) = the quantity of x minus 1, divided by 2, solve for f−1(5). 2 9 11 15

bearhunter [10]

F ( x ) = ( x - 1 ) / 2
y = ( x - 1 ) / 2
x - 1 = 2 y
x = 2 y + 1
f ^(-1) ( x ) = 2 x + 1 ( this is inverse function )
f ^(-1) ( 5 ) = 2 * 5 + 1 = 10 + 1 = 11
Answer: C ) 11

7 0

3 years ago

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Please help with these! I am so confused

Lemur [1.5K]

Answer:

81°

Step-by-step explanation:

180°=37°+62°+x°

180-37=143

143-62=81

x=81

8 0

3 years ago

Look at the graph shown below:

ElenaW [278]

So.. take a peek at the picture... let's get two points from it, hmm say 0,4 notice it touches the y-axis there, and say hmmm -4, 1, almost at the bottom of the line

$\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ 0}}\quad ,&{{ 4}})\quad 
% (c,d)
&({{ -4}}\quad ,&{{ 1}})
\end{array}
\\\\\\
% slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{1-4}{-4-0}$

$\bf y-{{ y_1}}={{ m}}(x-{{ x_1}})\qquad 
\begin{array}{llll}
\textit{plug in the values for }
\begin{cases}
y_1=4\\
x_1=0\\
m=\boxed{?}
\end{cases}\\
\textit{and solve for "y"}
\end{array}\\
\left. \qquad \right. \uparrow\\
\textit{point-slope form}$

once you get the slope and solve for "y", that'd be the equation of the line.

7 0

3 years ago

Answer please thanks

Nezavi [6.7K]

Answer:

too blurry pls send new pic

Step-by-step explanation:

4 0

4 years ago

Solve for z in the literal equation 4/3 (z + 5) = y.<br> 3

RUDIKE [14]

Answer: Z = 0.9y - 20

_______

Step-by-step explanation: First, add (-20)/3 to both sides. Then, divide both sides by 4/3.

8 0

3 years ago