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slamgirl [31]
3 years ago
10

Gabriella needs a mason and must decide between 2 companies. For a service visit, Company A charges $65 to send a mason plus $30

/h. Company B charges $30
to send a mason plus $47.50/h. The graph that models this situation is shown here.

According to the graph, how many hours must the two masons work in order to charge the same amount of money?

_____ hour(s)

Mathematics
2 answers:
Allisa [31]3 years ago
8 0
By looking at were the two lines meet on the graph, they would both have to work for 2 hours to charge the same.
Kamila [148]3 years ago
7 0
So first we write out their respective charges
A=65+30x (x=hours of A)
B=30+47.5y (x= hours of B)

we want to know when A and B are equal so just set them to be equal

65+30x=30+47.5x
subtract 30 from both sides
35+30x=47.5x
multiplyboth sides by 2 to get rid of the nasty decimal
70+60x=95x
subtract 60x from both sides
70=35x
divide both sides by 35
2=x
they must work 2 hours for them to be equal

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3) Prove that there is ann ∈ N such that 0.001 ∉ (0,1/n). (Hint: findsuch an n.)
Greeley [361]

Answer:

10000

Step-by-step explanation:

0.001 = 1/1000

so, we take an n bigger than 1000, let's say 10000, then 1/1000 > 1/10000 and 1/1000 ∉ (0, 1/10000).

6 0
3 years ago
What is the image of 4,3 reflected across the Y axis
puteri [66]

Answer:

(-4 , 3)

Step-by-step explanation:

(x,y) reflected over y axis  ---> (-x,y)

6 0
3 years ago
Which expressions are equivalent to the expression below?
Dmitriy789 [7]

Given :-

  • -1/3 - ( -4 + 1/6 )

To Find :-

  • The expression that is equivalent to one of the choices given .

Solution :-

As we know that ,

→ (-) × (-) = (+)

→ (-) × (+) = (-)

→ (+) × (-) = (-)

→ (+) × (+) = (+)

On using these open the brackets ,

→ -1/3 - 1( -4 + 1/6 )

→ -1/3 - 1(-4) + -1(+1/6)

→ -1/3 (-)(-)(1* 4) (+)(-) (1*1/6)

On using now above stated rules ,

→ -1/3 +4 -1/6

Somewhat rearrange ,

→ 4 -1/3 -1/6

Take (-) as common,

→ 4 - (1/3 +1/6)

<u>Hence Option </u><u>(</u><u>d)</u><u> </u><u>&</u><u> </u><u>(f) </u><u>are</u><u> correct .</u>

I hope this helps.

8 0
2 years ago
Didnt know wat subject it goes in is 98% of what you learn a waste
gregori [183]

Answer:

eh i mean sometimes thats a very broad statement though

5 0
3 years ago
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Difference 77/8 -31/4=
ad-work [718]
The answer is 15/8 
simplified: 1  7/8
3 0
3 years ago
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