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Marizza181 [45]
3 years ago
7

Plz solve this question

Mathematics
1 answer:
Rus_ich [418]3 years ago
6 0

7). 1/(√7-√11)

= 1×(√7+√11)/(√7-√11)(√7+√11)

= √7+√11 / (√7)² - (√11)²

= √7 + √11 / 7 - 11

= √7 + √11 / (-4)

<em>EXPLAINATION</em><em>:</em>

<em>to</em><em> </em><em>rationalize</em><em> </em><em>the</em><em> </em><em>denominator</em><em> </em><em>we</em><em> </em><em>multiply</em><em> </em><em>the</em><em> </em><em>numerator</em><em> </em><em>and</em><em> </em><em>the</em><em> </em><em>denominator</em><em> </em><em>by</em><em> </em><em>the</em><em> </em><em>denominator</em><em>,</em><em> </em><em>but</em><em> </em><em>with</em><em> </em><em>the</em><em> </em><em>opposite</em><em> </em><em>sign</em><em>.</em>

<em>For</em><em> </em><em>example</em><em> </em><em>-</em><em> </em><em>i</em><em>n</em><em> </em><em>t</em><em>h</em><em>e</em><em> </em><em>f</em><em>i</em><em>r</em><em>s</em><em>t</em><em> </em><em>q</em><em>u</em><em>e</em><em>s</em><em>t</em><em>i</em><em>o</em><em>n</em><em> </em><em>w</em><em>e</em><em> </em><em>m</em><em>u</em><em>l</em><em>t</em><em>i</em><em>p</em><em>l</em><em>i</em><em>e</em><em>d</em><em> </em><em>1</em><em> </em><em>a</em><em>n</em><em>d</em><em> </em><em>√</em><em>7</em><em> </em><em>-</em><em> </em><em>√</em><em>1</em><em>1</em><em> </em><em>b</em><em>y</em><em> </em><em>√</em><em>7</em><em> </em><em>+</em><em> </em><em>√</em><em>1</em><em>1</em><em> </em><em>.</em>

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Select the correct answer.<br> Which graph shows a function and its inverse?
Anna007 [38]
I think it’s C because inverses are basically the reciprocals of each other. These make 90 degree angles and the slopes product should be -1. C looks like the lines are perpendicular so I would go with that
8 0
3 years ago
Francesca is growing 1/2 inch each year. How many years will it take her to grow 6 inches?
tresset_1 [31]

Answer:

3 years.

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edit:

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4 0
3 years ago
Read 2 more answers
Probabilities with possible states of nature: s1, s2, and s3. Suppose that you are given a decision situation with three possibl
amm1812

Answer:

1. P(s_1|I)=\frac{1}{11}

2. P(s_2|I)=\frac{8}{11}

3. P(s_3|I)=\frac{2}{11}

Step-by-step explanation:

Given information:

P(s_1)=0.1, P(s_2)=0.6, P(s_3)=0.3

P(I|s_1)=0.15,P(I|s_2)=0.2,P(I|s_3)=0.1

(1)

We need to find the value of P(s₁|I).

P(s_1|I)=\frac{P(I|s_1)P(s_1)}{P(I|s_1)P(s_1)+P(I|s_2)P(s_2)+P(I|s_3)P(s_3)}

P(s_1|I)=\frac{(0.15)(0.1)}{(0.15)(0.1)+(0.2)(0.6)+(0.1)(0.3)}

P(s_1|I)=\frac{0.015}{0.015+0.12+0.03}

P(s_1|I)=\frac{0.015}{0.165}

P(s_1|I)=\frac{1}{11}

Therefore the value of P(s₁|I) is \frac{1}{11}.

(2)

We need to find the value of P(s₂|I).

P(s_2|I)=\frac{P(I|s_2)P(s_2)}{P(I|s_1)P(s_1)+P(I|s_2)P(s_2)+P(I|s_3)P(s_3)}

P(s_2|I)=\frac{(0.2)(0.6)}{(0.15)(0.1)+(0.2)(0.6)+(0.1)(0.3)}

P(s_2|I)=\frac{0.12}{0.015+0.12+0.03}

P(s_2|I)=\frac{0.12}{0.165}

P(s_2|I)=\frac{8}{11}

Therefore the value of P(s₂|I) is \frac{8}{11}.

(3)

We need to find the value of P(s₃|I).

P(s_3|I)=\frac{P(I|s_3)P(s_3)}{P(I|s_1)P(s_1)+P(I|s_2)P(s_2)+P(I|s_3)P(s_3)}

P(s_3|I)=\frac{(0.1)(0.3)}{(0.15)(0.1)+(0.2)(0.6)+(0.1)(0.3)}

P(s_3|I)=\frac{0.03}{0.015+0.12+0.03}

P(s_3|I)=\frac{0.03}{0.165}

P(s_3|I)=\frac{2}{11}

Therefore the value of P(s₃|I) is \frac{2}{11}.

4 0
3 years ago
Help please!!!!
Mrac [35]

Answer:

a = 2

b = 18

a/b = 1/9

Step-by-step explanation:

5 0
3 years ago
Does anyone know this one?
iogann1982 [59]
It's A.

18 correlates with $350 and 12 correlates with $520.
That crosses off B and D.

18 + 12 days combined equals 30.
That excludes C and D.

A is your answer! :D
6 0
3 years ago
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