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3 years ago

( √2 - √3 )² = a. 5 - 2√6 b. 5 - √6 c. 1 - 2√6 d. 1 - √2 e. 1

Mathematics

1 answer:

TEA [102]3 years ago

7 0

$(\sqrt{2} - \sqrt{3})^2= (\sqrt{2})^2-2 \sqrt{2} \sqrt{3} +(- \sqrt{3} )^2=2-2 \sqrt{2*3} +3=5-2 \sqrt{6}$

Answer: A

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oee [108]

Answer:

Z-score = 1.18

Step-by-step explanation:

The z-score measures how many standard deviations from the mean a data is

Therefore the z score is the quotient between the difference between a value and the mean and the standard deviation

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Where

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In this case

$\mu =101\\\\\sigma = 3.4\\\\X = 105$

Then the z-score is

$Z = \frac{105-101}{3.4}\\\\Z = 1.18$

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4 years ago

Drag and drop the equation to correctly complete the sentence.

Klio2033 [76]

Answer:

y= 2x - 11

Step-by-step explanation:

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y= 2x +b

-1 = 2* 5 + b

solve for b and you get -11 so the equation of the line is :

y = 2x -11

4 0

3 years ago

PLEASEEEE ANSWER ASAP

Alona [7]

Answer:

x = -1, x = 1

Step-by-step explanation:

Factor the equation. (It's a difference of squares, so we know the form will be (a-b)(a+b).)

$y = x^{2} - 1\\y = (x-1)(x+1)$

Test this by FOILing it out, if you're unsure. This is something it can be good to memorize!

Set it equal to 0.

$0 = (x+1)(x-1)$

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3 years ago

Cash Orcheck had a balance of $867 in his checking account on

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Answer:

Well since he wrote the amount, he’s technically giving cash away so you basically jsut add everything.

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His final balance would be -97

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So here are the two options

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2) He got more money in his checking account

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3 years ago

Please help!!

garik1379 [7]

Given:

The radius of the cone = 14 ft

The slant height of the cone = 27 ft

To find the lateral surface area and the total surface area of the given cone.

Formula

The lateral surface area of the cone is

$LSA = \pi rl$ and

The total surface area of the cone is

$TSA = \pi r^{2} + \pi r l$

where,

r be the radius and

l be the slant height of the cone.

Now

Taking r = 14 and l = 27 we get

$LSA = \pi (14)(27)$ sq ft

or, $LSA = 1187.5$ sq ft

Again,

$TSA = \pi(14^2)+\pi (14)(27)$ sq ft

or, $TSA = 1803.3$ sq ft

Hence,

The lateral surface area of the cone is 1187.5 sq ft and the total surface area of the cone is 1803.3 sq ft. Option C.

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3 years ago