All categories

3 years ago

PLEASE help me with this question! This is really urgent! No nonsense answers please.

Mathematics

1 answer:

anygoal [31]3 years ago

5 0

Answer:

The correct answer is b.

Step-by-step explanation:

if you arrange the data set in ascending order you will have:

x y

-2 $\frac{1}{100}$

-1 $\frac{1}{10}$

0 1

1 10

3 1000

Exponential growth is an increase in a specific way of a data set over time. here, as x increases by a +1, y increases with ×10

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4 years ago

I REALLY NEED HELP pls I didn’t study at all

podryga [215]

Answer:

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3 years ago

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3 years ago

Find the values of b such that the function has the given maximum value.

gizmo_the_mogwai [7]

So, the equation has a leading term with a negative coefficient, and is a quadratic, meaning is a parabola opening downwards, so it goes up and up and up and then makes a U-turn then down down, so it has a maximum point, that is, at the vertex point

so.. where the dickens is the vertex at?
we're asked to make the vertex with a y-coordinate of 104, so the maximum value is 104

well
$\bf y = {{ a}}x^2{{ +b}}x{{ +c}}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)\\\\
-----------------------------\\\\
\textit{so we want }\implies {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}=104
\\\\
\textit{let's take a peek at your equation}\quad 
\begin{array}{ccccllll}
f(x)=&-x^2&+bx&-17\\
f(x)=&-1x^2&+bx&-17\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}
\\\\
thus
\\\\
(-17)=\cfrac{b^2}{4(-1)}=104$

solve for "b"

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3 years ago

Solve for e:(-7)=e/3+14? show your work

Semmy [17]

-7 = $\frac{e}{3}$ + 14
take 14 to the other side
-7 -(14) = $\frac{e}{3}$
-21 = $\frac{e}{3}$
Multiply by 3 on either sides to isolate e and to find a value

-21 × 3 = $\frac{e}{3}$ × 3
3 and 3 cancels out

-63 = e

8 0

3 years ago