Reading list

Mathematics

1 answer:

never [62]3 years ago

8 0

9514 1404 393

Answer:

7 cm, 4.4 cm

Step-by-step explanation:

The side lengths can be found from the law of cosines. Each triangle has legs 3 cm and 5 cm. The angle between these will be 60° or 120°. Then the two sides of the parallelogram are ...

s = √(a² +b² -2ab·cos(C))

s = √(3² +5² -2·3·5·(±1/2)) = √(34 ±15) = {√49, √19}

The two side lengths are 7 cm and about 4.4 cm.

You might be interested in

Find the equation of the line passing through the given points. Use function notation to write the equation, (-2,8) and (-6,20)

bekas [8.4K]

First you gotta find the slope
$\frac{20 - 8}{ - 6 - ( - 2)} = \frac{12}{ - 4} = - 3$
Then you can put it into point slope form using either of the points
$y - 20 = - 3(x + 6) \\ y - 20 = - 3x - 18 \\ y = - 3x + 2$

7 0

3 years ago

Solve for x. Round your answer to the nearest tenth.

valkas [14]

Answer:

1. x = 11.5

2. x = 14.35

Step-by-step explanation:

$1. \: sin(angleBAC) = \frac{BC}{AB}$