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juin [17]
2 years ago
9

The sum of 4 times a number and 8 is equal to 5.

Mathematics
1 answer:
Anna007 [38]2 years ago
5 0
Algebraic expression: 4n + 8 = 5
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What is the answer ​
Igoryamba

Answer:

∠B = 60°

Step-by-step explanation:

They are supplementary angles, which means they add up to 180°.

∠B + ∠A = 180

? + 120 = 180

? = 180 - 120

? = 60°

8 0
3 years ago
Which of the following systems has an infinite number of solutions?
VARVARA [1.3K]

Answer:

C. x+y = 1 and -x-y = -1

Step-by-step explanation:

Remember that if a system of equations has an infinite number of solutions, then the resulting equation from using the first step of the elimination method would have no variables and would be true.  

1) Let's try canceling out the equations in option C, x+y =-1 and -x-y =-1. Add the two equations together. (Work shown in attached picture.)

2) All of the terms cancel out with each other, leaving only a true statement of 0 = 0. Thus, option C is the answer.  

3 0
3 years ago
A plumber charges an initial fee of $200 plus and hourly fee of $50. Mrs. Coombs paid the plumber $ 450. How many hours did the
nikitadnepr [17]

Answer:

5 hours

Step-by-step explanation:

The total cost is the fee plus the hours* hourly cost

450 = 200+50*h  where h is the hours

Subtract 200 from each side

450-200 = 200-200 +50h

250 = 50h

Divide each side by 50

250/50 = 50h/50

5 = h

5 hours

6 0
3 years ago
Read 2 more answers
(Past Due) Need Help
Charra [1.4K]

I would say its the second one.

the student shouldve distributed the 2^3x+3 into 2^3x+9

8 0
3 years ago
In the figure, lines ℓ and m are parallel. Describe ∠1 and ∠2.
seropon [69]

∠1 and ∠2 are equal angles as the lie on same side of transversal, are on parallel lines and are corresponding to each other

thank you

8 0
3 years ago
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