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3 years ago

If a and b are rational numbers and 5 +2 root 3/7+4 root3=a-b root 3;then a and b=

Mathematics

1 answer:

Usimov [2.4K]3 years ago

6 0

Answer:

$\bold{a=5\,,\quad b=-4\frac27}$

Step-by-step explanation:

$5+\frac{2\sqrt3}7+4\sqrt3=5+\frac27\sqrt3+4\sqrt3=5+4\frac27\sqrt3=5-(-4\frac27)\sqrt3$

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In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation in statistical polling is t

klemol [59]

Answer:

The conclusion about p using an absolute value inequality is

$0.325 < p < 0.375$

Step-by-step explanation:

From the question we are told that

The sample proportion is $\r p = 0.35$

The margin of error is $E = 0.025$

The confidence interval is mathematically represented as

$\r p -E < p < \r p +E$

=> $0.35 - 0.025 < p < 0.35 + 0.025$

=> $0.325 < p < 0.375$

7 0

2 years ago

Which does not represent an integer?

miv72 [106K]

Answer:

The answer is D

Step-by-step explanation:

Let's see all choices in detail

A . 0 it is correct because 0 is an integer

B .It seems like rational number but it is not simplified yet so -18 \ 2= -9

C .

$\sqrt{9} = 3 \: so \: it \: is \: also \: integer$

D . 4\5 it is decimal so it is rational number not integer

I hope u like it

4 0

3 years ago

Solve eqaution 15m+22=-7m+18

lilavasa [31]

It will beee 22/4 :)....

7 0

2 years ago

Read 2 more answers

Nine times the sum of n and one

Sveta_85 [38]

Answer:

i have no idea what you mean

5 0

2 years ago

Factoring Quadratic Trinomials 6n^2 - n - 40 =

Sophie [7]

Answer:

(3n - 8)(2n + 5)

Step-by-step explanation:

6n² - n - 40

Consider the factors of the product of the coefficient of the n² term and the constant term which sum to give the coefficient of the n- term

product = 6 × - 40 = - 240 and sum = - 1

The factors are - 16 and + 15

Use these factors to split the n- term

6n² - 16n + 15n - 40 ( factor the first/second and third/fourth terms )

2n(3n - 8) + 5(3n - 8) ← factor out (3n - 8) from each term

(3n - 8)(2n + 5)

Then

6n² - n - 40 = (3n - 8)(2n + 5)

6 0

2 years ago