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4 years ago

Solve the system algebraiclly 3x -2y -1 = 0 y= 5x +4

1 answer:

3 0

You’re already given what y is so just substitute it in and solve

3x-2(5x+4)-1=0
Distribute
3x-10x-8-1=0
Add like terms
-7x-9=0
Add 9 to both sides
-7x=9
Divide both sides by -7
x=-9/7

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A company sells widgets. The amount of profit, y, made by the company, is related to the selling price of each widget, x, by the

Kisachek [45]

Answer:28.25

Step-by-step explanation:

Equation is: y = - 2x^2 + 113x - 497

In order to find out maximum of X, first step is to take derrivative of the function y = - 2x^2 + 113x -497.

When we do that, derrivative function is:

dy/dx = - 2 * 2 x + 113 * 1 = - 4x +113

At the maximum point derrvative function equals to zero.

So, - 4x + 113 = 0

-4x = -113

x = 28.25

So, the selling price should be 28.25

7 0

3 years ago

Read 2 more answers

8.<br> Use the distributive property to complete the statement 8(4 + y) = 32 +

leonid [27]

Answer:

y=0

Step-by-step explanation:

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3 years ago

Andrew and Connie are both teachers at their local school. There are 15 female teachers at the school and 35 male teachers. What

wlad13 [49]

Answer:

7:3

Step-by-step explanation:

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3 years ago

What is this answer

mylen [45]

Answer:

t = ≥ 0.1

Step-by-step explanation:

Hope that helps!

7 0

3 years ago

Which logarithmic graph can be used to approximate the value of y in the equation 4^y=8

WINSTONCH [101]

$\bf \textit{exponential form of a logarithm}\\\\
log_{{ a}}{{ b}}=y \implies {{ a}}^y={{ b}}\qquad\qquad 
% exponential notation 2nd form
{{ a}}^y={{ b}}\implies log_{{ a}}{{ b}}=y 
\\\\
-------------------------------\\\\$

$\bf 4^y=8\implies log_4(8)=y\qquad 
\begin{cases}
4=2^2\\
8=2^3
\end{cases}\implies (2^2)^y=2^3
\\\\\\
2^{2y}=2^3\impliedby \textit{since the bases are the same, so are the exponents}
\\\\\\
2y=3\implies y=\cfrac{3}{2}\implies y=1\frac{1}{2}\quad thus\quad 
\begin{cases}
x=8\\
y=\frac{3}{2}
\end{cases}$

so.. check your graphs

7 0

4 years ago