All categories

4 years ago

Questions:

Mathematics

2 answers:

MrRa [10]4 years ago

8 0

Answer:

i dont uderstand sorry

Step-by-step explanation:

dusya [7]4 years ago

8 0

Answer: positive + positive = positive is always true

negative + negative = negative is always true

negative - negative = negative is sometimes true

Step-by-step explanation:

You might be interested in

Not a hard question i just don't get it. I really need some help here, its the final

Greeley [361]

Start with

$\dfrac{1}{\sin^2(x)}=4$

Invert both sides:

$\sin^2(x) = \dfrac{1}{4}$

Consider the square root of both sides with double sign:

$\sin(x) = \pm\sqrt{\dfrac{1}{4}} = \pm\dfrac{1}{2}$

We have

$\sin(x) = \dfrac{1}{2} \iff x = \dfrac{\pi}{6}\ \lor\ x = \dfrac{5\pi}{6}$

and

$\sin(x) = -\dfrac{1}{2} \iff x = \dfrac{7\pi}{6}\ \lor\ x = \dfrac{11\pi}{6}$

5 0

4 years ago

What does (-7)^2 eaqual??

adell [148]

$(-7)^2 = (-7)(-7) = 49$

So, 49 is the answer.

3 0

3 years ago

Factor the expression 84+28

harkovskaia [24]

Answer:

112

Step-by-step explanation:

7 0

3 years ago

(05.06 LC)

brilliants [131]

If we are to make x small rugs, each of which takes 2 hours to dye, then the total time taken to dye the small rugs is 2x. Similarly for the y large rugs which each take 3 hours to dye, the total time for dyeing the large rugs is 3y. Therefore the total for all sizes of rugs is 2x + 3y. Finally, we have a maximum of 60 available hours for the dyeing, so the total time cannot exceed 60, and the final inequality is
2x + 3y < 60

8 0

3 years ago

8 + 56/-7 х -4<br> -24<br> -40<br> 0<br> 40

andrew-mc [135]

Answer:

Step-by-step explanation:

8+56/-7x-4

8+(-8)x-4

0x-4

Hope this helps ;) ❤❤❤

7 0

4 years ago