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SCORPION-xisa [38]
3 years ago
9

K(n)=-4|3n+2|+3 find k(4)

Mathematics
1 answer:
madreJ [45]3 years ago
8 0

- 23
is the answer
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What is the exact value of cos 30° ? <br> Enter your answer, as a simplified fraction, in the box.
dezoksy [38]
<span>I think this is the answer cos 30=<span><span>3–√</span>2</span></span>
8 0
3 years ago
Read 2 more answers
Please help!! will list brainlist!!!!!
vivado [14]

Answer:

b. 3t ≥ 36

Step-by-step explanation:

She gets $3 per three-pointer. The variable <em>t</em> stands for three-pointer. So in mathematical terms, it would be 3<em>t</em>.

She wants a minimum of 36 dollars, therefore the sign would be ≥. This means 3<em>t </em>has to be greater than or equal to 36.

So, 3<em>t</em> ≥ 36

4 0
3 years ago
If X=2<br> y=-1<br> z=3 <br>Find the value of<br><br><br>a. 2y3(cube) z2(square)​
qaws [65]

Step-by-step explanation:

2y³z²

2(-1)³(3)²

=2(-1)(9)

=-18

6 0
3 years ago
7 8 9 10 11 12 13 14 15 plz that is all but I don't get it and my math teacher sucks so when you tell me the answers can you sho
ohaa [14]
The formula for area is pi x r^2 (pi times radius squared) so, for number 7 youre given the radius or "r", which is half the length of the inside of the cirlce. On a calculator: you would do 8 times 8 (8^2) because that's the radius squared and then you should get 64 and times 64 by 3.14 or use the pi button depending on what your teacher prefers you to use. 

When you're given diameter or "d" which represents the is equal to the radius times 2. So, for example, number 8 the diameter is 26 so, the radius is 13. Use the formula for area just like in number 7 to find the area of this circle. 

Make sure you pay attention to what information youre given (whether its "d", Diameter, "r" or radius. Use those two lists of steps for solving numbers 7 through 12. 

For numbers 13-15:
use the number (22/7) instead of 3.14 or the pi button on your calculator and do the same steps!!!!!

Let me know if you still need help after this:) happy math solving!
7 0
3 years ago
A 12-foot ladder leans against the wall; the base of the ladder is 2 feet away from the wall.To the nearest tenth of a foot, how
ludmilkaskok [199]
<h3>The ladder will reach a height of 11.8 feet up the wall</h3>

<em><u>Solution:</u></em>

The ladder, wall and base of the ladder from wall forms a right angled triangle

Length of ladder forms the hypotenuse

Length of ladder = 12 foot

base of the ladder from wall = 2 feet

<em><u>To find: height of wall</u></em>

By pythagoras theorem.

c^2 = a^2+b^2

Where,

"c" is the Length of ladder

"a" is the base of the ladder from wall

"b" is the height of wall

Substituting the values,

12^2 = 2^2+b^2\\\\144 = 4 + b^2\\\\b^2 = 140\\\\b = \pm 11.832 \\\\Ignore\ negative\ value\\\\b \approx 11.8

Thus, the ladder will reach a height of 11.8 feet on wall

4 0
3 years ago
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