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katrin2010 [14]
4 years ago
13

Solve the system of equations using the substitution method. ​ ​ x = −2 2x + 5 = y

Mathematics
2 answers:
alexdok [17]4 years ago
8 0

\text{Solve by plugging -2 to x:}\\\\\text{We know this by the question identifies what the value of x is}\\\\2(-2)+5=y\\\\\text{Solve:}\\\\2(-2)+5=y\\\\-4+5=y\\\\\boxed{1=y}

dimaraw [331]4 years ago
3 0

Answer:

y = 1

Step-by-step explanation:

x=-2\\2x+5=y

2(-2)+5=y\\-4+5=y\\1=y

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The reciprocal of a fraction less than 1 is always a fraction greater than 1.why is this?
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3 years ago
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3 years ago
Kim is watching a space shuttle launch from an observation spot 2 miles away. Find the angle of elevation from Kim to the space
hammer [34]

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<h2><em>46.4°</em></h2>

Step-by-step explanation:

Find the diagrammatic representation in the attachment given.

We can see that the diagram is a right angled triangle. To get the angle of elevation, we will use one of the trigonometry identity SOH, CAH, TOA.

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