All categories

2 years ago

PLS HELP ASAP!!!ITS 25 POINTS PLEASE HELP ME!!!!!

Mathematics

2 answers:

natta225 [31]2 years ago

8 0

Answer:

Step-by-step explanation:

Its simple

chubhunter [2.5K]2 years ago

5 0

The answer is A, 68% of the students didn’t fail the homework

You might be interested in

If and , which is the rule of the function (f + g)(x)?

OleMash [197]

Please give the numbers?

4 0

3 years ago

Need help with this plz

likoan [24]

Answer:

4x>74+9

Step-by-step explanation:

4x+2×45

2×45x

74x×2

4x>9

4x>74+9

4 0

2 years ago

Before a sale, an item’s price was $38.00; during the sale, it was 15% off. What was the sale price?

Pani-rosa [81]

38 times (1-15%)
$32.3

4 0

2 years ago

How to write 84 divided into sevenths

Rudik [331]

84 divided into sevenths could either be:

84 x (1/7) or simply 84/7
In the end, the answer would be 12.

6 0

3 years ago

Sin(60-theta)sin(60+theta)

ehidna [41]

Step-by-step explanation:

$\sin(60 - \theta) \sin(60 + \theta) \\ = \{ \sin(60) \cos( \theta) - \sin( \theta) \cos(60) \} \{ \sin(60) \cos( \theta) + \cos(60) \sin( \theta) \} \\ = \{ \frac{ \sqrt{3} }{2} \cos( \theta) - \frac{1}{2} \sin( \theta) \} \{ \frac{ \sqrt{3} }{2} \cos( \theta) + \frac{1}{2} \sin( \theta) \} \\ \\$

from difference of two squares:

${ \boxed{(a - b)(a + b) = ( {a}^{2} - {b}^{2} ) }}$

therefore:

$= \{ {( \frac{ \sqrt{3} }{2}) }^{2} { \cos }^{2} \theta \} - \{ {( \frac{ \sqrt{3} }{2} )}^{2} { \sin }^{2} \theta \} \\ \\ = \frac{3}{4} { \cos }^{2} \theta - \frac{3}{4} { \sin}^{2} \theta$

factorise out ¾ :

$= \frac{3}{4} ( { \cos }^{2} \theta - { \sin}^{2} \theta) \\ \\ = { \boxed{ \frac{3}{4} \cos(2 \theta) }}$

3 0

2 years ago

Read 2 more answers

PLS HELP ASAP!!!ITS 25 POINTS PLEASE HELP ME!!!!!​

PLS HELP ASAP!!!ITS 25 POINTS PLEASE HELP ME!!!!!