3 years ago

What is the solution for 2(4r+6)=2/3(12r+18)

Mathematics

1 answer:

kari74 [83]3 years ago

8 0

R = 1. Try it out yourself.

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Given the system of linear equations.

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Part(A):

To solve the system of Linear equations using Substitution:

$x+y=7 \\ 2x+y=5$

Consider the first equation, x+y=7 implies x=7-y

$\mathrm{Subsititute\:}x=7-y$

$2\left(7-y\right)+y=5$

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$\mathrm{Divide\:both\:sides\:by\:}-1$

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$y=9,\:x=-2$

PArt(B): Use a graph to verify your answer to the system:

Using Desmos graphing calculator, graph the two equations.

8 0

3 years ago

Read 2 more answers

Name the binomial you can multiply by (x + 9) to get the product x^2 + 5x- 36

SpyIntel [72]

If you would like to solve (x^2 + 5x - 36) / (x + 9), you can do this using the following steps:

a = ?
(x + 9) * (x + a) = <span>(x^2 + 5x - 36)
x^2 + ax + 9x + 9a = x^2 + 5x - 36
ax + 9x = 5x
a + 9 = 5
a = 5 - 9
a = - 4

The correct result would be x - 4.
</span>

5 0

3 years ago