How do you write the decimal 0.7 as a fraction in simplest form

Mathematics

1 answer:

puteri [66]3 years ago

4 0

0.7 is 7/10 in fraction form

It is also already in simplest form

7/10 is your answer

hope this helps

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The equation x2 − 9 = 0 has real solution(s).

tatiyna

Answer:

The roots are real and unequal (3, -3)

Step-by-step explanation:

x²-9=0

ax²+bx+c=0

Comparing we get,

a= 1

b= 0

c = -9

Determinant: b²-4ac

= 0² - 4(1)(-9)

= 36>0

D > 0

Therefore, the equation has real and unequal roots.

Algebraic identity:

x² - a² = (x-a)(x+a)

Using this identity

x²-9 = (x+3)(x-3)

Roots are 3 and -3 which are real and not equal to each other

Hope this answer helps you ..

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3 years ago

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Sin150+sin120÷cos210-cos300

natulia [17]

From sin(180-x) = sin(x)
sin(150) = sin(180-30) = sin(30)
sin(120) = sin(180-60) = sin(60)

from cos(360-x) = cos(x)
cos(300) = cos(360-60) = cos(60)
cos(210) = cos(360-150) = cos(150)

from cos(180-x) = -cos(x)
cos(210) = cos(150) = cos(180-30) = -cos(30)

6 0

3 years ago

Mr. Johnson is planning what to wear tomorrow to school. He has a white shirt, a plaid shirt, and a blue shirt. He has four pair

myrzilka [38]

Answer:

12 different possibilities

Step-by-step explanation:

times them together...

3 different shirt options and 4 different pants options so,

3 x 4 = 12

or you could draw out a tree to show all of the different combinations...

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