PLS HELP! TWO MATH QUESTIONS

2 answers:

5 0

There is a formula that relates the arc length of a circle of radius, r, to the central angle ,θ in radians. S = r(θ) where S is arc length, r is radius, and θ is the central angle.

So substituting into the formula for the first question we have: 5.4=6(θ) and solving for θ we get 0.9

Now for the second question substituting into the formula we have:
S = 6( $\frac{3 \pi }{2}$ )

Solving this for S we find the arc length to be 9π

Ksivusya [100]3 years ago

3 0

Yeah I'm not sure but I think it's 6

You might be interested in

PLS HELP I WILL GIVE BRAINIEST If triangle BCD were rotated over the y-axis from point (0, 0), what would be the coordinates of

Sphinxa [80]

The answer would be B

7 0

2 years ago

Prove that the sum of all natural numbers is -1/12.

ankoles [38]

This is not true. The infinite series

$\displaystyle\sum_{n=1}^\infty n$

converges if and only if the sequence of its partial sums converges. The $k$ -th partial sum is

$\displaystyle\sum_{n=1}^kn=\frac{k(k+1)}2$

but clearly this diverges as $k$ gets arbitrarily large.

5 0

3 years ago

2. Evaluate the expression e + c for e = 9 and c = 5. a. 14 c. 15 b. 45 d. 4

slega [8]

Answer: A. 14

Step-by-step explanation:

If e=9 and c=5 you would replace e+c with those

9+5=14

6 0

3 years ago

Help fast plz give me the answer

Lunna [17]

The answer is 75 degrees I believe.

45 + 60 + x = 180

I’m pretty sure I’m correct but I’m so sorry if I’m wrong.

7 0

3 years ago

12x-5y=20 y=x+4 3x+y=3 x=-y+3

Vladimir79 [104]

Standard form (which I assume is what they want you to turn these into) is y=mx+b.

12x-5y=20 is y=2.4x-4.
Subtract 12x from both sides, -5y=-12x+20.
Multiply both sides by -1, 5y=12x-20.
Divide both sides by 5, y=2.4x-4.

y=x+4 is already in standard form- I'm not quite sure what to do.

3x+y=3 is y=-3x+3.
Subtract 3x from both sides, y=-3x+3.

x=-y+3 is y=-x+3
Ad y to both sides, y+x=3.
Subtract x from both sides, y=-x+3.

4 0

3 years ago