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3 years ago

Subtract (4x^2 + x + 8) - (2x^2 + 3x - 1)

Mathematics

1 answer:

Ludmilka [50]3 years ago

5 0

Answer:

2x^2-2x+9

Step-by-step explanation:

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The table shows the results of a poll of 200 randomly selected juniors and seniors who were asked if they attended prom. Find th

Zielflug [23.3K]

Answer:

(a) $\frac{7}{25}$

(b) $\frac{19}{116}$

Step-by-step explanation:

Number of juniors who attended prom,n(J)=28

Number of seniors who attended prom,n(S)=97

Total of those who attended prom=125

Number of juniors who did not attend prom,n(J')=56

Number of seniors who did not attend prom,n(S')=19

Total of those who attended prom=75
Total Number of students=200

(a) P (a junior who did not attend prom)

$P(J')=\frac{56}{200}= \frac{7}{25}$

(b)

$P(Senior)=\frac{116}{200}$

$P ($did not attend prom$ | senior)=\frac{\text{P(seniors who did not attend prom)}}{P(Senior)} \\=\frac{19/200}{116/200} \\=\frac{19}{116}$

(c)P (junior | attended prom)

$P(Senior)=\frac{84}{200}$

$P (Junior|$ attended prom$)=\frac{\text{P(juniors who attended prom)}}{P(\text{those who attended prom)}} \\=\frac{28/200}{125/200} \\=\frac{28}{125}$

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3 years ago

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Maksim231197 [3]

The answer is -7/2 or -3.5

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3 years ago

Easy geometry. help please

olchik [2.2K]

(x, y) --> (x + 5, y - 1)

A(3, -1) --> A'(3 + 5, -1 - 1) --> A'(8, -2)

B(6, 1) --> B'(6 + 5, 1 -1) --> B'(11, 0)

C(2, 4) --> C'(2 + 5, 4 - 1) --> C'(7, 3)

D(-1, 3) --> D'(-1 + 5, 3 - 1) --> D'(4, 2)

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Serggg [28]

Answer:

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Step-by-step explanation:

$895.136m \: + \: 276.51m \\ = 1171.646 \: m \\ following \: manipulation \: rules \\ in \: addition \: we \: take \: the \: least \: number \: of \: decimal \: places \\ = 1171.65 \: m \: (6 \: significant \: figures)$

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3 years ago

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