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Savatey [412]
2 years ago
5

Find the value of the expression when b= 9 c= 5 and d=10 ............ ½d + c² - b

Mathematics
1 answer:
Minchanka [31]2 years ago
4 0

Answer:

1/2d+c^2-b = 21

Step-by-st ep explanation:

= 1/2(10) + 5^2 -9

= 5 + 25 - 9

= 30 - 9

= 21

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A snail traveled 1/4 kilo in 5/6 hours. What was its average speed
AysviL [449]

Answer:

3/10 kilos per hr

Step-by-step explanation:

1/4÷5/6=1/4×6/5

=6/20=3/10

5 0
2 years ago
Frank wrote 1/4 of his book
Ede4ka [16]
Let’s make common denominator
1/4 * 2/2 = 2/8 before dinner
1/8 after dinner
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7 0
2 years ago
An event is three times as likely as its complement. What is the probability of the event?
serg [7]
E = some event
C = complement of event E
Since the events are complementary, this means P(E)+P(C) = 1

We know that P(E) = 3*P(C) since "an event is three times as likely as its complement"

So we can replace P(E) with 3*P(C) and then isolate P(C)
P(E) + P(C) = 1
3*P(C) + P(C) = 1
4*P(C) = 1
P(C) = 1/4

The probability of the complementary event is 1/4
So the probability of the original event is 3/4 (three times 1/4)

Answer: 3/4

note: in decimal form, 3/4 = 0.75
5 0
2 years ago
What is the equation of the parabola, in vertex form, with focus at (1, -4) and<br> directrix x= 3?
Nezavi [6.7K]

Answer:

  D.  (y +4)² = -4(x -2)

Step-by-step explanation:

The directrix is a vertical line, and the focus is to the left of it. The parabola will open to the left.

The vertex is halfway between the focus and directrix, so is located on the same horizontal line as the focus, at ...

  x = (1 +3)/2 = 2

The focus to vertex distance is the difference in x-coordinates: 1 -2 = -1. This is the value of p in the form ...

  (y -k)² = 4p(x -h) . . . . . . . parabola with vertex (h, k)

The equation is ...

  (y +4)² = -4(x -2)

_____

<em>Additional comment</em>

Once you determine that the directrix is a vertical line, you know the equation will have a y² term. The only answer choice that has that is D.

5 0
2 years ago
Las medidas de posición dividen una distribución ordenada en grupos con la misma cantidad de datos.
miss Akunina [59]

Answer:

no entiendo tu pregunta xD !?

7 0
2 years ago
Read 2 more answers
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