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Zinaida [17]
3 years ago
15

Find a value of 21 + 4(3^2 -5)

Mathematics
1 answer:
Svetllana [295]3 years ago
7 0

the following answer to this question is 37.

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Help! Thanks!!!!!!!!!!!
Harrizon [31]
The standard form is (x - h)2<span> = 4p (y - k), where the focus is (h, k + p) and the directrix is y = k - p. If the </span>parabola<span> is rotated so that its vertex is (h,k) and its axis of symmetry is parallel to the x-axis, it has an </span>equation<span> of (y - k)</span>2<span> = 4p (x - h), where the focus is (h + p, k) and the directrix is x = h - p.</span>
6 0
3 years ago
YOU HAVE 8 COINS IN A BAG. 3 OF THEM ARE UNFAIR AND THEY HAVE 60% CHANCE OF COMING UP WITH HEAD WHEN FLIPPED. YOU RANDOMLY CHOSE
madreJ [45]

Answer:

0.29125 or 29.125%

Step-by-step explanation:

For the five fair coins, the probability of coming up head when flipped is 0.5, so for two flips: 0.5*0.5 = 0.25, for each of these coins. So, the probability to take on of them is 5/8, and the probability of coming up with head: (5/8)*0.25 = 0.15625.

For the unfair coins, the probability of coming up with heads is 0.6, so for two flips: 0.6*0.6 = 0.36 for each unfair coins. The probability to chose one of them is 3/8, and the probability of coming up with head: (3/8)*0.36 = 0.135.

These probabilities are dependent, so to have the total probability we must sum them:

P = 0.15625 + 0.135

P = 0.29125 or

P = 0.29125 x 100% = 29.125%

4 0
4 years ago
Which of the following is correct?
sveta [45]

Answer:

C

Step-by-step explanation:

Come on man really

5 0
3 years ago
Plsss helppppppp tyyyysmmmm
kondor19780726 [428]

Answer:

Step-by-step explanation:

x = 180 - 117 = 63°

y = 360 - 63 - 86 - 98 = 113°

Sum of angles along a line about a point on the line is 180°

Sum of internal angles on a quadrilateral is 360°

5 0
3 years ago
What is 1/5 times 10x?
grigory [225]

Answer:

2x

Step-by-step explanation:

10x/5 is the same as 1/5 times 10x.

Simplify to get 2x

8 0
3 years ago
Read 2 more answers
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