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Readme [11.4K]
3 years ago
13

Prove that: –7 is not the arithmetic square root of 49

Mathematics
1 answer:
frez [133]3 years ago
6 0

Answer:

–7 is not the arithmetic square root of 49 only in case we are taking it for natural number.

Step-by-step explanation:

  • The square root of x is that number which on squaring gives the result as x.
  • For example, the square root of 4 is +2 or -2. Because on squaring +2 or -2 we get the number 4.
  • Similarly for the case of 49, the square root might be both +7 or -7.
  • But if we are taking it as a natural number then -7 is not valid. Like for length, quantity or other sort of things -7  is not the arithmetic square root of 49.
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Simplify<br> x^2(y^3)^4/xy^5=x^a•y^b
givi [52]

Answer: a = 1 b = 7

Step-by-step explanation:

x^2(y^3)^4/x.y^5 = x^a.y^b

x^2(y^12) = x^a.y^b

(x^2).(y^12)/x^y^5 = x.y^7

x.y^7= x^a . y^b -> <u>x^1.y^7</u>

7 0
3 years ago
There are 32 red or blue marbles in a bag. The number of red marbles is 4 more than 3 times the number of blue marbles. Write an
eimsori [14]

Answer:

# red marbles = 25

# blue marbles = 7

Step-by-step explanation:

r + b = 32

r = 4 + 3b

substitute '4 + 3b' for 'r' in the 1st equation

4 + 3b + b = 32

4 + 4b = 32

4b = 28

b = 7

red = 32 - 7

r = 25

5 0
3 years ago
What is: -1/8+3/8-5/8+7/8=
sergeinik [125]

Answer:

= 1/2

Step-by-step explanation:

- 1/8 + 3/8 - 5/8 + 7/8 = ?

2/8 - 5/8 +7/8

-3/8 + 7/8

= 4/8 --> (simply) =1/2

Hope it was helpful! If you are unsure about something or my answer is wrong then please let me know so I fix my mistakes! Also a good website to use is Desmos Scientific Calculator to check your answer!

7 0
3 years ago
Read 2 more answers
Problem Page
leva [86]
1/8 + 2/3= 19/24

I/you have walked 19/24 miles total, since 19/24 can't be simplified.
7 0
3 years ago
Read 2 more answers
Find the area of the following<br> parallelogram:<br> 1.5 cm<br> 2.5 cm<br> 2.25 cm<br> A= [?] cm
Serggg [28]

Answer:

given,

base (b) = 2.25cm

height (h) = 1.5 cm

now,

area (a) = b×h

or, a=2.25cm×1.5cm

therefore the area of parallelogram is 3.375cm^2.

<em>hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em><em>.</em>

7 0
3 years ago
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