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Fittoniya [83]
3 years ago
13

How do you solve -2/3x + 5 = 20 - x

Mathematics
1 answer:
Monica [59]3 years ago
8 0

-2/3x + 5 = 20 - x

subtract 5 from each side

-2/3 x = 15 -x

add x to each side

-2/3 x +x = 15

get a common denominator of 3 for the x terms

-2/3x + 3/3 x =15

combine like terms

1/3 x = 15

multiply by 3 on each side

x = 45

Answer: x=45

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Question 3, help please!
White raven [17]

The answer is not defined.

Explanation:

The given matrix is $\left[\begin{array}{cc}{2} & {4} \\ {1} & {-6}\end{array}\right]+\left[\begin{array}{c}{1} \\ {0}\end{array}\right]$

The matrix $\left[\begin{array}{cc}{2} & {4} \\ {1} & {-6}\end{array}\right]$ has dimensions 2\times 2

This means that the matrix has 2 rows and 2 columns.

Also, the matrix $\left[\begin{array}{l}{1} \\ {0}\end{array}\right]$ has dimensions 2\times1

This means that the matrix has 2 rows and 1 column.

Since, the matrices can be added only if they have the same dimensions.

In other words, to add the matrices, the two matrices must have the same number of rows and same number of columns.

Since, the dimensions of the two matrices are not equal, the addition of these two matrices is not possible.

Hence, the addition of these two matrices is not defined.

4 0
3 years ago
In ΔCDE, the measure of ∠E=90°, DE = 39 feet, and CD = 89 feet. Find the measure of ∠C to the nearest degree.
Nonamiya [84]
It’s 64.4 :)
i just did it lolz
8 0
3 years ago
Read 2 more answers
Given the exponential equation y = yoxQq describe each of the following below:
miskamm [114]

Answer:

Step-by-step explanation:

3 0
2 years ago
I need help on this question.
blondinia [14]

Let's go:


The centroid of a triangle is the point of intersection of its medians. The distance from de centroid to some vertex of triangle to which it belongs is equal to 2/3 of the length of its median:


BM = 18/3 = 6


I hope I helped you.


6 0
3 years ago
What is the solution to a system whose equations are parallel?
Rina8888 [55]
One solution- if the graphs of the equations intersect, then there is one solution that is true for both solutions.

No solutions- If the graphs of the equation do not intersect (example-if they are parallel) there are no solutions that there are true for both equations.
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7 0
3 years ago
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