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3 years ago

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Is a + b = b + a a commutative or associative property of addition

1 answer:

myrzilka [38]3 years ago

5 0

<em>Your</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>above</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>

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Solve the following system of equations by substitution. Show all steps.

Alinara [238K]

Answer:

Given system of equations:

$\begin{cases}f(x)=-x^2+2x+3\\g(x)=-2x+3\end{cases}$

To solve by substitution, equate the equations and solve for x:

$\begin{aligned}f(x) & = g(x)\\\implies -x^2+2x+3 & = -2x+3\\-x^2+4x & = 0\\x^2-4x & = 0\\x(x-4) & = 0\\\implies x & = 0\\\implies x-4 & = 0 \implies x=4\end{aligned}$

Therefore, the x-values of the solution are $x = 0$ and $x = 4$ .

To find the y-values of the solution, substitute the found values of x into the functions:

$f(0)=-(0)^2+2(0)+3=3$

$g(0)=-2(0)+3=3$

$f(4)=-(4)^2+2(4)+3=-5$

$g(4)=-2(4)+3=-5$

Therefore, the solutions to the given system of equations are:

$(0, 3)$ and $(4, -5)$

4 0

2 years ago

The temperature in Celsius would be,

elena-14-01-66 [18.8K]

First derisive the equation for C

$\\ \sf\longmapsto F=\dfrac{9}{5}C+32$

$\\ \sf\longmapsto C+32=\dfrac{5}{9}F$

$\\ \sf\longmapsto C=\dfrac{5}{9}F-32$

F=101F

$\\ \sf\longmapsto C=\dfrac{5}{9}101-32$

$\\ \sf\longmapsto C=\dfrac{505}{9}-32$

$\\ \sf\longmapsto C=56.1-32$

$\\ \sf\longmapsto C=24.1°C$

8 0

2 years ago

Please help with this question?!?

erik [133]

Answer:

416 mi

Step-by-step explanation:

In order to find the surface area, you must find the area of each square. There are a total of 6 that make up the prism.

<em>Remember to find the area it is length x width</em>

9 x 8 = 72 which is the area for 4 of the squares. 2 on the side and 2 on the bottom
Lastly for the last 2 squares to find the area you multiply 8 x 8 = 64
In total, you will add 72+72+72+72+64+64 which equals 416

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2 years ago

If the bird is dircelty above the fish how far apart

yulyashka [42]

-3 -2 -1 0 1 2 3. If that’s confusing, it’s 0.

8 0

2 years ago

Can someone Help me please?? :(

Sever21 [200]

Answer:

its 55

Step-by-step explanation:cuz why not

5 0

2 years ago

Read 2 more answers