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Elena L [17]
3 years ago
13

What is the lenght of PQ P is 2,1 Q is 5,6

Mathematics
1 answer:
Elodia [21]3 years ago
4 0

Answer:

7,7

Step-by-step explanation:

Possibly 7,7 becuase p+q=pq, therefor 2,1+5,6=7,7

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The distance of one light-year is approximately 9,500,000,000,000 kilometers. What is this distance in scientific notation?
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7 0
3 years ago
I need help with this
evablogger [386]

Answer:

A) (-8, -16)

B) (0, 48)

C) (-4, 0), (-12, 0)

Step-by-step explanation:

A) the vertex is the minimum y value.

extremes of a function we get by using the first derivation and solving it for y' = 0.

y = x² + 16x + 48

y' = 2x + 16 = 0

2x = -16

x = -8

so, the vertex is at x=-8.

the y value is (-8)² + 16(-8) + 48 = 64 - 128 + 48 = -16

B) is totally simple. it is f(0) or x=0. so, y is 48.

C) is the solution of the equation for y = 0.

the solution for such a quadratic equation is

x = (-b ± sqrt(b² - 4ac)) / (2a)

in our case here

a=1

b=16

c=48

x = (-16 ± sqrt(16² - 4×48)) / 2 = (-16 ± sqrt(256-192)) / 2 =

= (-16 ± sqrt(64)) / 2 = (-16 ± 8) / 2 = (-8 ± 4)

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x2 = -8 - 4 = -12

so the x- intercepts are (-4, 0), (-12, 0)

6 0
3 years ago
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