3 years ago

Solve each system by elimination x + 2y = 20 3x +2y = -12

Mathematics

1 answer:

neonofarm [45]3 years ago

3 0

The answer is (2,-9). Hope i can help.

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Rachel left home for school at 7:45 one morning. She returned home at 4:05 that afternoon. How many hours and minutes was she go

IceJOKER [234]

Answer:

8 hours 20 minutes

Step-by-step explanation:

Given that :

Time Rachel left for school = 7:45 a.m

Time she returned Home = 4:05 p.m

Time for which Rachael was gone :

4:05 p.m - 7:45 a.m

7:45 a.m to 3:45 p.m= 8 hours

3:45pm to 4:05 pm = 20 minutes

= 8 hours 20 minutes

Rachael was gone for 8 hours 20 minutes

8 0

3 years ago

So if you can do expressions with rational numbers, what is the answer to -½+-0.5?

jek_recluse [69]

Answer:

-1

Step-by-step explanation:

The sum of -1/2 and -5/10 is -1.

4 0

3 years ago

What is the angles mSRW?

Scilla [17]

Answer:

126°

Step-by-step explanation:

(2x +18)° = (3x)°

2x + 18 = 3x

18 = 3x - 2x

18 = x

therefore, (3x)° = (3*18)°= (54)°

$m\angle SRW + (3x)\degree = 180\degree \\m\angle SRW + 54\degree = 180\degree \\m\angle SRW = 180\degree - 54\degree \\\huge\red{\boxed{m\angle SRW = 126\degree}}$

5 0

3 years ago

Solve the inequality 12(1/2x-1/3)>8-2x

gizmo_the_mogwai [7]

Answer:8(1/2x - 1/4)> 12 - 2x

a.x > 7

b.x > 7/3

c.x > 5/3

d.x > 5/3

Step-by-step explanation: Solve the inequality 12(1/2x-1/3)>8-2x

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3 years ago

A child 4 feet tall casts a shadow 6 feet

klio [65]

The Answer should be C) 40.5 feet

3 0

3 years ago