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vagabundo [1.1K]
3 years ago
5

Please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Reika [66]3 years ago
3 0
Its b im pretty sure
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Please help me on this question...will mark brainiest answer
Sav [38]

Answer:

55 degrees

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Please please help me
zhuklara [117]

Answer:

first one

Step-by-step explanation:

yes, the interval does increase at -2. however, you can see it decreases again but starts rising up again at the interval 1.

3 0
4 years ago
What is the axis of symmetry for the graph of y-4x=7-x^2
Len [333]
As you may know, the axis of symmetry will be a coordinate off the vertex of the equation, so... 

\bf y-4x=7-x^2\implies y=7-x^2+4x\implies y=-x^2+4x+7
\\\\\\
\textit{ vertex of a vertical parabola, using coefficients}\\\\
\begin{array}{llll}
y = &{{ 1}}x^2&{{ +4}}x&{{ +7}}\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad  {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)
\\\\\\
\left(-\cfrac{4}{2(-1)}~~,~~7-\cfrac{4^2}{2(-1)}  \right)\quad thus\implies \stackrel{\textit{axis of symmetry}}{x=~~~~-\cfrac{4}{2(-1)}}
7 0
3 years ago
Jessica measured a rectangular postage stamp. The stamp was 43 millimeters long and 24 millimeters wide. What was the area of th
MaRussiya [10]
You just have to multiply 43 times 24 and it equals to be 1,032
4 0
3 years ago
Read 2 more answers
Help me pls.............
labwork [276]
10x - 7y = -1....multiply by -1 to make that -7y positive
-2x - 7y = -25
------------------
-10x + 7y = 1 (result of multiplying by -1)
-2x - 7y = -25
-----------------add
-12x = - 24
x = 2

-2x - 7y = -25
-2(2) - 7y = -25
-4 - 7y = -25
-7y = - 25 + 4
-7y = - 21
y = 3

solution is : (2,3)
6 0
3 years ago
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