What is 7 and 1/2 minus 3/4

Mathematics

1 answer:

Sliva [168]2 years ago

8 0

Answer:

here's your answer in the given picture

You might be interested in

Prove that root3 (cosec (20))-sec (20)=4

Tems11 [23]

Root 3 /sin 20 - 1/cos 20

= (root3 cos 20 - sin 20 )/ (sin 20 cos 20)
(multiplying and dividing by 2)
= 2* (root3/2 cos 20 -1/2 sin 20)/ (sin 20 cos 20)

now sin 20 cos 20 = (2 sin 20 cos 20)/2 = (sin 40)/2
and writing root3/2 = sin 60, 1/2 = cos 60

= 2* (sin 60 cos 20 - cos 60 sin 20)/ (sin 40)/2

= 4* (sin (60-20))/sin 40

= 4* (sin 40)/sin 40
=4

Ask if any doubt in any step :)

7 0

3 years ago

Read 2 more answers

Show your work for 70 divided by 6

sleet_krkn [62]

70÷6=11.66666667 this is the exact answer

4 0

2 years ago

Whats the common denominator of 3/8 and 2/5?

Firlakuza [10]

40 is the answer
5 x8 =40

3 0

2 years ago

Could anyone help please i am very bad at math :( what is 3/5 of 50

artcher [175]

3/5(50)
=(3/5)(50/1)
=(3)(50)/(5)(1)
=150/5
=30

8 0

3 years ago

Pls help, 20 points!!

klemol [59]

Answer:

(-18,9)

Step-by-step explanation (work shown in picture attached):

1) The first step in solving by substitution is to isolate the y-term in one of the equations if it is not already isolated. Isolate y in the first equation by dividing both sides by -2. This leaves us with the equation $y = \frac{-x}{2}$

2) Now, substitute $\frac{-x}{2}$ for the y in the second equation. Simplify and isolate x. (You can multiply everything by -2 to get rid of the fraction.) This leaves us with x = -18.

3) We've found the x-value of the solution, -18. Now, substitute -18 for x back into one of the original equations (I chose the first one because it was simple) and isolate y. This gives us y = 9. Thus, in point form, the answer is (-18,9).

7 0

2 years ago