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marusya05 [52]
4 years ago
14

Show that the system has no solution. x + 2y = -4 y = -1/2x - 4

Mathematics
1 answer:
erica [24]4 years ago
7 0

Step-by-step explanation:

TO show that this system has no solution, use the y value in the second equation and put it in for y in the first. Then solve.

x + 2y = -4

x + 2(-1/2x - 4) = -4

x  - x - 8 = -4

-8 = -4

Because this is an incorrect statement, we can tell there is no solution.

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Someone explain this step by step to me 1/2(c-8)=
polet [3.4K]

Answer: c/2-4


Step-by-step explanation:

This is what I get :

1/2(c-8)

Distributed property

1/2(c) + 1/2(-8)


Do c and -8 as a fraction with denominator 1 solve across

1/2×c/1+1/2×-8/1


Here you can only divide -8by 2

C/2-8/2

To get -4

C/2-4


You can't go further

4 0
3 years ago
Sophia want to rent an apartment she visits apartment A Whitehall charges $100 for a one time deposit and $400 per month for ren
Alex

Answer:

The inequality in this case is 100 + 400*t > 500 + 350*t and for B to be cheaper Sophia has to rent it for more than 8 months.

Step-by-step explanation:

In order to write the inequality we first need to write two equations one for each apartment. For apartment A we have a fixed cost of $100 and a variable cost of $400 that varies according to the time living in there, so we have:

rent = 100 + 400*t

For apartment B we have a fixed cost of $500 and a variable cost of $350 that varies according to the time living in there, so we have:

rent = 500 + 350*t

In order for the total paid in B to be less than for the one in A we need to satisfy the following inequality:

100 + 400*t > 500 + 350*t

400*t - 350*t > 500 - 100

50*t > 400

t > 400/50

t > 8 months

The inequality in this case is 100 + 400*t > 500 + 350*t and for B to be cheaper Sophia has to rent it for more than 8 months.

8 0
3 years ago
What is the area of the triangle
zepelin [54]

Answer:

60m^2 is the answer im pretty sure

Step-by-step explanation:

yeah man thats it

3 0
3 years ago
For 3x2- 4x+ 1, match the following:
Arturiano [62]
2 = degree
x = variable
expression = <span>3x^2-4x+1
coefficients = 3 and -4
constant = 1</span>
8 0
3 years ago
Read 2 more answers
You start a new job. After w weeks, you have (10w+110) dollars in your savings account and (36w+25) dollars in your checking acc
Lina20 [59]

Answer:

(46w+135) dollars

Step-by-step explanation:

Given that,

Amount in savings account = (10w+110) dollars

Amount in checking amount = (36w+25) dollars

We need to find an expression that represents the total in both accounts. It is simply the sum of amount in the savings account and checking amount.

Sum = (10w+110) dollars + (36w+25) dollars

= (10w+36w) + (110+25)

= (46w+135) dollars

Hence, the required expression is (46w+135) dollars

5 0
3 years ago
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