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Firdavs [7]
3 years ago
11

Giải bài tập toán giúp tôi

Mathematics
2 answers:
11111nata11111 [884]3 years ago
6 0

Answer:

5x2 + 5x -1

Step-by-step explanation:

jus multiply 3x to 2x because there to the same power. it becomes a postive and you leave the rest.

snow_lady [41]3 years ago
3 0

Answer:

the first answer is right

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It is known that 10% of the calculators shipped from a particular factory are defective. what is the probability that at least o
seraphim [82]
P = 10% = 0.1
q = 1 - 0.1 = 0.9
P(at least one defective calculator) = P(1) + P(2) + P(3) + P(4) = 1 - P(0)

The brobability of a binomial distribution is given by
P(x)=^nC_xp^xq^{n-x}
where: n = 4
P(0)=^4C_0(0.1)^0(0.9)^4=1\times1\times0.6561=0.6561
Therefore,
P(at least one defective calculator) = 1 - 0.6561 = 0.3439
6 0
4 years ago
Wilhelm built a shelf to hold his trophies. The shelf can support a maximum of 18 pounds, and his trophies each weigh 2 pounds.
kirill115 [55]
18 divided by 2 equals 9 trophies
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4 years ago
What is the equation of a line with a slope of ​ ​ −4 ​ ​ and a point ​ (−2, 5) ​ on the line? Express the equation in the form
Alja [10]

Answer:

y = - 4x - 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

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Here m = - 4, thus

y = - 4x + b ← is the partial equation

To find b substitute (- 2, 5) into the partial equation

5 = 8 + b ⇒ b = 5 - 8 = - 3

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6 0
3 years ago
Read 2 more answers
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Alexandra [31]
154, since 17+16+15...+1 = 154.
. . . . . . . . . . . . . . . . . .
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4 years ago
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mariarad [96]
Volume of triangular prism + volume of rectangular prism = total volume
16*4*6+1/2*12*9=V
438=V
The volume of the figure is 438ft²
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