3 years ago

Question on image. will report answers out of question. Thank you

Mathematics

1 answer:

olchik [2.2K]3 years ago

3 0

Answer:

84°

Step-by-step explanation:

< DEB = ½× (31+ 137) = ½× (168) = 84°

You might be interested in

Solve x2 – 4x – 9 = 29 for x.

Irina-Kira [14]

$x^2 - 4x - 9 = 29 \\ x^2 - 4x - 9 - 29 = 0 \\ x^2 - 4x - 38 = 0 \\ x= \frac{-b \pm \sqrt{ b^{2} -4ac} }{2a} 
$ ; where a = 1, b = -4 and c = -38
$x= \frac{-(-4) \pm 
\sqrt{ 
(-4)^{2} -4 \times 1 \times -38} }{2 \times 1} \\ = \frac{4 \pm \sqrt{ 16 +152} }{2} \\ =\frac{4 \pm \sqrt{ 168} }{2} \\ =\frac{4 \pm 
2\sqrt{42} }{2} \\ 
=2+\sqrt{42} \ or \ 2-\sqrt{42}\\=8.48 \ or \ -4.48$

8 0

3 years ago

Read 2 more answers

34.8 x 7 what is the answer?

grigory [225]

Answer:

243.6

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

What is 2 7/4 in simplest form