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3 years ago

PLEASE HELP

2 answers:

8 0

You can solve for sides of a triangle using the following equation.

A = arccos (b^2 + c^2 - a^2/2bc)

And likewise for other variables by moving the letters.

Ultimately, in this problem you get the following angle measures:

15.87
23.97
140.16

mezya [45]3 years ago

8 0

Answer:

1. A

2. D

3. A, E, F

4. C

Step-by-step explanation:

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I think the answer is 0.123 cm

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A pencil is 7 1/2 inches long. How long is the pencil in centimeters?

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The pencil is 19.05 centimeters.

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2 years ago

Which choice is the solution for this system ? 2x − 5y = 14 x + 3 2 y = 5

VashaNatasha [74]

Answer:

The required solution is (5.75,-0.5). It can be written as $(\frac{11}{4},-\frac{1}{2})$ .

Step-by-step explanation:

The given equations are

$2x-5y=14$ .... (1)

$x+\frac{3}{2}y=5$ .... (2)

Multiply the equation (2) by 2.

$2x+3y=10$ .... (3)

Subtract equation (1) from equation (3).

$2x+3y-(2x-5y)=10-14$

$2x+3y-2x+5y=-4$

$8y=-4$

$y=-\frac{1}{2}=-0.5$

Put this value in equation (1).

$2x-5(-0.5)=14$

$2x+2.5=14$

$2x=11.5$

$x=5.75$

Therefore the required solution is (5.75,-0.5). It can be written as $(\frac{11}{4},-\frac{1}{2})$ .

3 0

2 years ago

5) Solve for x. 2x + 16 = 3(x - 9) My Answer:

Vedmedyk [2.9K]

Answer:

Step-by-step explanation:

2x+16= 3(x-9)

2x+16= 3x-27

3x-2x^^

16= x-17

16+17

x= 33

8 0

3 years ago

Read 2 more answers

I need help ASAP with this

igor_vitrenko [27]

Answer:

2ITR/KVJFCIUYBDTR67E4VHJN, BHJYUG76T89O;LXCS,DVTI9R0OPE;'

Step-by-step explanation:

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3 years ago