3 years ago

The slopes of perpendicular lines are

Mathematics

1 answer:

Andrej [43]3 years ago

8 0

Answer:

B: Negative Reciprocals.

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THIS IS WORTH 40 POINTS

Kryger [21]

Answer:

$x=60^o$

$y=50^o$

Step-by-step explanation:

ΔACD

$50+70+x=180$

$120+x=180$

$x=180-120$

$x=60$

ΔABC

$60+50+ACB=180$

110+ ∠ACB=180

∠ACB=180-110

= 70°

Now...

x+y+∠ACB=180°

$60+y+70=180$

$y+130=180$

$y=180-130$

$=50^o$

<u>---------------------------</u>

hope it helps...

have a great day!!

5 0

3 years ago

Read 2 more answers

200 labourers need 50 days to construct a road of 4 km long. How many labourers are needed to construct 8 km long in 80 days

patriot [66]

Answer:

250

Step-by-step explanation:

Number of labourers * Number of days worked = Total number of working days

Total number of working days to construct a 4km long road: $200*50=10000$

Total mumber of working days to construct a 8km long road: $10000*2=20000$

Labourers: 20000 ÷ 80 = 250.

250 labourers are required.

7 0

3 years ago

Multiply<br> (3+6i)(2+8i)

Alex73 [517]

$~~(3+6i)(2+8i)\\\\=3(2) + 3(8i) + 2(6i)+ (6i)(8i)\\\\=6 + 24i +12i+48i^2\\\\=6+36i-48~~~~~~~~~~~~~~~~~~~~~~~;[i^2 = -1]\\\\=-42+36i$

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2 years ago

I need help with number 4 someone please help !!

kotykmax [81]

Answer:

50.27 if pi is 3.14

Step-by-step explanation:

6 0

3 years ago

What can the read infer most likely happened to Jun Do's mother?

Vika [28.1K]

She left because she was tired of living in the countryside

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3 years ago