2 years ago

PLEASE HELP us the half angle formula for 7, 8 and 9(which is marked 8 on accident)

Mathematics

1 answer:

Gre4nikov [31]2 years ago

3 0

Answer:

$sin105 = \frac{ \sqrt{6} + \sqrt{2} }{4}$

$cos105 = \frac{ - { \sqrt{6} + \sqrt{2} } }{4}$

$tan105 = - 2 - \sqrt{3}$

Answered by GAUTHMATH

You might be interested in

The square of the sum of 7 times x and 3 divided by 4 times the difference of x and 1

4vir4ik [10]

I believe the 3rd answer down if the information you provided is correct

Squaring the sum on the top, rules out 1 and 2 (not squaring the 7 only)
then 4 times the difference. so I believe 4 (x-1) on the bottom.

4 0

3 years ago

Read 2 more answers

M is directly proportional to r2.when r=2,m=14.Work out the value of m when r=12

valentinak56 [21]

Answer:

504

Step-by-step explanation:

In the attached file

Hope it helps

4 0

3 years ago

Eddie's Evergreens sells Christmas trees and wreaths. Trees cost 3 dollars more than 4 times the price of each wreath. It costs

kari74 [83]

Answer:

$W = 16$

$T = 67$

Step-by-step explanation:

Represent trees with T and wreaths with W

Given

$T = 3 + 4 * W$

$2 * W + T = 99$

Solving (a): Cost of W

Substitute 3 + 4 * W for T in the second equation

$2*W + 3 + 4 * W = 99$

$2W + 3 + 4 W = 99$

Collect Like Terms

$2W + 4 W = 99 - 3$

$6W = 96$

Divide through by 6

$W =\frac{96}{6}$

$W = 16$

Hence, each wreath costs $16

Solving (b): Cost of T

$T = 3 + 4 * W$

Substitute 16 for W

$T = 3 + 4 * 16$

$T = 3 + 64$

$T = 67$

Hence, each tree costs $67

3 0

2 years ago

Mississippi has the lowest median income at 40.6 thousand dollars. Mississippi also has about 207 bachelor’s degrees per 1,000 p

horsena [70]

Answer:

178

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Evaluate the expression 6÷3+17=

charle [14.2K]

Answer:

=19

Step-by-step explanation:

=6÷3+17

=2+17

=19

8 0

3 years ago