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meriva
2 years ago
10

What is the answer to this please help

Mathematics
2 answers:
mash [69]2 years ago
7 0

Answer:

2\sqrt{42} + 7\sqrt{2} -6- \sqrt{21}

Step-by-step explanation:

(\sqrt{14} - \sqrt{3})(\sqrt{12} + \sqrt{7})

root 12 can be changed to 2 root 3

then multiply

then simply

and you should get ur answer

Elis [28]2 years ago
4 0

Answer:

use calculater please it will not take long

You might be interested in
(a) How many integers in the range 1 through 120 are integer multiples of 2, 3, or 5? keyboard_arrow_down Solution (b) How many
Umnica [9.8K]

Answer:

(a) 88 integers

(b) 92 integers

Step-by-step explanation:

(a) integers whose last digits are divisible by 2 are multiples of two or numbers whose digits ends with zero. So for number 1-120 , all the even numbers which are sixty in number are are multiples of two.

For  3, numbers whose digits sum is divisible by three are multiples of three. 3,6,9,12,15,18,21,24,27,30 are multiples of three from numbers 1-30. we have four 30s in 120. which means numbers of integers will be 10*4 = 40integers. However out of these numbers , half are also integers of 2 which reduces the number added to 20integers.

For 5, numbers whose digits ends with 5 or 0 are multiples of 5. this gives us 24 integers for 1-120. but out of these 24integers, 16 are common integers of 2 and 3 which reduces the number added to 8integers.

Thus from 1-120 the intergers of 2,3 or 5 = 60+20+8 = 88integers.

(b) if we are considering from numbers 1-140;

for 2 we wil have 70 integers,

for 5 we will have 28 integers, but those integers that end with 0 are also integers of 2 which reduces the number added to 14.

For 7, numbers 7,14,21,28,35,42,49,56,63,70 are multiples of three from 1-70. This pattern is repeated from number 71-140. hence we have 20 integers in all. However 12 of the multiples are also multiples of either 2 or 5 which reduces the number to 8 integers.

Thus from 1-140, the integers of 2, 5, or 7 = 70+14+8 = 92integers

3 0
3 years ago
Which expression is equivalent to ^
mash [69]

Answer:

Step-by-step explanation:

lets break down 120 to see what it is divisible by and see if any of those numbers are perfect squares.

120/2=60

120/3=40

120/4=30

we can stop there because 4 is a perfect square and 30 can not be reduced any further to produce a perfect square.

do not forget there is only one x so it must stay in side the  radical.

your answer is 2sqrt(30x)

5 0
3 years ago
Mr james has cylindeical brakes measure 4 inches in diameter and are 9 inches high what is the value contain within the brakes
ra1l [238]

Answer:I think you have to multiply them

Step-by-step explanation:

So 4 times 9= 36

8 0
3 years ago
Please help me !!!!!!!
NikAS [45]
I want to say the answer is A i caulated it and i end up getting 17
4 0
3 years ago
How do you solve an equation like<br> 2+6+7+20x
Leokris [45]
The answer would be 15 +20x. You have to combine like terms.
 
                             2+6+7+20x
                              8+7+20x
                                = 15+ 20x  (answer) 

5 0
3 years ago
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