Please help me!! Thank you

Mathematics

2 answers:

Anika [276]2 years ago

5 0

Answer:

153.93

Step-by-step explanation:

A= πr^2

A= π(7)^2

A= π(49)

A= 153.93

mrs_skeptik [129]2 years ago

3 0

Answer:

The area of the circle is 153.86. Plz give me brainliest!

Step-by-step explanation:

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X = y - 3

mojhsa [17]

Hello,
{x=y-3
{x+3y=13;

{x=y-3
{y-3+3y=13;

{x=y-3
{4y=13+3;

{x=y-3
{4y=16;

{x=y-3
{y=16:4=4;

{x=4-3=1
{y=4;

{x=1
{y=4

the solution to the system of equations is (1,4)

Bye :-)

8 0

3 years ago

5tanx-2cotx+1=0...... .

Verdich [7]

Step-by-step explanation:

5(tanx)^2 -2 +tanx=0

let tanx=y

5y^2 + y-2=0

y=0.5403 or y= -0.7403

tanx=0.5403

x=arctan(0.5403)

x=28.38°

tanx=-0.7403

x=arctan(-0.7403)

x=143.49°

7 0

3 years ago

Which expression is equivalent to (2^5)^-2

irinina [24]

1/1024 is the correct answer. First you had to apply exponent rule, and it gave us, $\frac{1}{(2^5)^2}$ , or $2^5^*^2$ . Then you can also refine, and it gave us, $2^10$ , or $\frac{1}{2^10}$ . And it gave us the answer is $2^1^0=2*2*2*2*2*2*2*2*2*2=1024$ , or 1/1024 is the correct answer. Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie