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lana [24]
1 year ago
8

graph each system of equations to find its solution. then, prove that the caution is true In a check by substituting it into bot

h equations. be sure to show all work

Mathematics
1 answer:
Lerok [7]1 year ago
4 0

The solution to a system of linear equations is the point at which the lines representing the linear equations intersect, let's graph to determine the solution:

As we can see on the graph, the lines intersect on (5, 2). Now, let's check substituing into the equations:

\begin{gathered} \text{Subtituing y=2, into the first equation:} \\ 2=x-3 \\ x=2+3 \\ x=5 \end{gathered}

So, the solution is correct.

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What is the sum of StartRoot negative 2 EndRoot and StartRoot negative 18 EndRoot?
Darya [45]

Answer:

4 \sqrt{2} i

Step-by-step explanation:

We want to find the sum of

\sqrt{ - 2}  +  \sqrt{ - 18}

We can rewrite this as

\sqrt{ 2 \times  - 1}  +  \sqrt{ 18 \times  - 1}

This becomes;

\sqrt{2}  \times  \sqrt{ - 1}  +  \sqrt{18}  \times  \sqrt{ - 1}

Recall that;

i =  \sqrt{ - 1}

This implies that;

\sqrt{2} i + 3 \sqrt{2} i

Combine like terms:

4 \sqrt{2} i

3 0
3 years ago
91/50 as a decimal and percent
Anarel [89]

Answer:

Decimal: 1.82. Percent: 182%

Step-by-step explanation:


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3 years ago
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Find the y-intercept of the line on the graph
igomit [66]

Answer:

The answer to this is y=4

Step-by-step explanation:

The answer is the point at which the line intercepts the y-axis.

Hope this helped. :)

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3 years ago
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Madison bought her Grandfather a new hat for his birthday. The hat cost $12.99 and was hanging on the 50% clearance rack. How mu
Sunny_sXe [5.5K]

Answer:

the hat would cost $6.495 which if you round the answer it would be $6.50

Step-by-step explanation:

12.99*50%=12.900*.50=6.495 round to 6.50

5 0
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The algebraic expression 0.07d^3/2 describes the duration of a storm, in hours, whose diameter is d miles. use a calculator to d
Shkiper50 [21]

Answer:

  1.30 hours

Step-by-step explanation:

Put the given number in the formula and do the arithmetic. The value of "d" is given as 7, so you are evaluating the expression ...

  duration = 0.07×7^(3/2) . . . . put 7 where "d" is in the expression

  = 0.07×18.520 . . . . . . . . . . . . evaluate 7^(3/2)

  = 1.2964 . . . . . . . . . . . . . . . . . do the multiplication

  ≈ 1.30 . . . . rounded to hundredth

The duration of a storm 7 miles in diameter is predicted to be 1.30 hours.

___

With a suitable calculator, this can all be done at once.

6 0
3 years ago
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