2 years ago

PLEASE HELP!!

Mathematics

1 answer:

Verizon [17]2 years ago

6 0

Answer:

Step-by-step explanation:

sum of ngles of triangle=180

90+39+A=180

129+a=180

A=180-129

apply the some rule:

since 39 = opp/hyp

sin39=16/c

<h2>c= 16/sin39 = 25.42 ≅ 25.4 rounded to the nearest tenth</h2>

sin 51 = opp/hyp

sin51=a/25.42415166

<h2>a=19.8 ( rounded to the nearest tenth)</h2>

You might be interested in

Plsssss helppp im so lost on this

Alik [6]

Answer:

2n-4>1n+3

Step-by-step explanation:

So basically 2 times a number go together because it means its multiplying and the greater sign is > and then 1 is multiplying with n so its 1n and then you just add 1

3 0

2 years ago

Pls help im very desperate i'll defenitely give brainliest

bagirrra123 [75]

Answer:

-25

Step-by-step explanation:

You can take 10÷-⅖=-25

7 0

2 years ago

Read 2 more answers

The shaded triangle is set inside a pentagon. What type of triangle is the shaded triangle?

SpyIntel [72]

That is a right angled triangle

5 0

2 years ago

Read 2 more answers

Rhonda bought a new laptop for $800. The laptop depreciates, or loses, 20% of its value each year. The value of the laptop at a

zhuklara [117]

As per the problem,

Rhonda bought a new laptop for $800.

The laptop depreciates, or loses, 20% of its value each year.

The value of the laptop at a later time can be found using the formula

$A=P(1-r)^t.....(1)$

Here we have

P=$800

r=20%=0.20

t=2 years

Substitute the values in equation (1) we get

$A=800(1-0.2)^2\\ \\ \Rightarrow A=800(0.8)^2\\ \\ \Rightarrow A=800*0.64\\ \\ \Rightarrow A=512\\$

The laptop be worth in two years will be $512.

6 0

2 years ago

Khan academy question

andriy [413]

Answer:

(2,5)

Step-by-step explanation:

There you go.........

4 0

2 years ago

Read 2 more answers