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3 years ago

5/6x=-20 what is the answer

Mathematics

1 answer:

amid [387]3 years ago

5 0

Answer:

x = -24

Step-by-step explanation:

5/6x = -20

5x = -120

x = -24

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Do the ratios 4 5 and 13 15 form a proportion?

Harman [31]

It is 4:5 because it just is that is why it is 4:5

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3 years ago

Evaluate the expression when a=4, b=−5, and c=−8. (−b)+c=

hodyreva [135]

Answer:

-3

Step-by-step explanation:

(−b)+c=

Let b = -5 and c = -8

- (-5) + -8

5 -8

-3

7 0

3 years ago

Read 2 more answers

Please help!! Solve the system using an augmented matrix. Show all work

marishachu [46]

Answer:

The solution of the system is: $x=2, y=5$

Step-by-step explanation:

The given system of equations is.......

$-x-3y=-17\\ \\ 2x-6y=-26$

So, the augmented matrix will be: $\left[\begin{array}{cccc}-1&-3&|&-17\\2&-6&|&-26\\\end{array}\right]$

Now, we will transform the augmented matrix to the reduced row echelon form using row operations.

Row operation 1 : Multiply the 1st row by -1. So..........

$\left[\begin{array}{cccc}1&3&|&17\\2&-6&|&-26\\\end{array}\right]$

Row operation 2: Add -2 times the 1st row to the 2nd row. So.......

$\left[\begin{array}{cccc}1&3&|&17\\0&-12&|&-60\\\end{array}\right]$

Row operation 3: Multiply the 2nd row by $-\frac{1}{12}$ . So.......

$\left[\begin{array}{cccc}1&3&|&17\\0&1&|&5\\\end{array}\right]$

Row operation 4: Add -3 times the 2nd row to the 1st row. So........

$\left[\begin{array}{cccc}1&0&|&2\\0&1&|&5\\\end{array}\right]$

Now, from this reduced row echelon form of the augmented matrix, we can get that $x=2$ and $y=5$

So, the solution of the system is: $x=2, y=5$

8 0

3 years ago

An expression is show.

kodGreya [7K]

I have attached solution. be careful with your notation because at first I could not figure out because I thought they were 2 separate terms. in fact I believe it is all over the 3×10^7
:)

6 0

3 years ago

.092 -.15-.19= how do I solve

photoshop1234 [79]

Line up the decimal point to each number in order from left to right and subtract to get the difference which should be -0.248

5 0

3 years ago