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AleksAgata [21]
3 years ago
9

On the given graph, when x=-1, what is f(x)? A) 3 B) 5 C) 7 D)8

Mathematics
1 answer:
stellarik [79]3 years ago
8 0

Answer:

There's no graph sorry

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Find all n in N that satisfy (2^n)-1 divisible by 9​
zmey [24]

Answer:

u can use the hit and trial method for this

7 0
3 years ago
Please help with this math question picture is shown
maksim [4K]

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-20 gallons per minute

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The answer plz I will thank u
Darya [45]
2x3= 6
18÷6= 3
So, 3x4 = 12
7 0
3 years ago
In 1995, Hazel was 25 years older than her son Gary. In 2022, Hazel's age will be 150% of Gary's age. How old were they in 1995?
Kitty [74]
So find the difference between 1995 and 2022 to make it easier
2022-1995=27

so the rephrased question is
when hazel was x years old, she was 25 years older than son gary who was y old at that time (equation is x is 25 more than y or x=25+y)
in 27 years, (this means x+27 and y+27) hazel's age will be 150% of gary's age (x+27= 150% of y+27)
percent means parts out of 100  so 150%=150/100=15/10=1.5
'of' in math means multiply so
the equations are
x=25+y
x+27=1.5(y+27)
subsitute 25+y for x in second euation
25+y+27=1.5(y+27)
add like terms
y+52=1.5(y+27)
I personally dislike decimals to multiply both sides by 2 to make 2 0.5's or 1 (you are technically supposed to distribute or divide both sides by 1.5) so
2y+104=3(y+27)
distribute
2y+104=3y+81
subtract 2y from both sides
104=y+81
subtract 81 from both sides
23=y
subsitute
x=25+y
x=25+23
x=48


Hazel was 48 and Gary was 23 in the year of 1995
5 0
3 years ago
Need help please...............................
Hunter-Best [27]
Note that the side adjacent to angle XYZ is given (6 cm) and that the hypo is also given (15 cm).  Thus, cos XYZ = adj / hyp = 6 cm / 15 cm  = 2/5 = 0.4.

XYZ is then  arc cos 0.4.  Use the arccos function on your calculator to determine XYZ and give XYZ in both degrees and radians.
7 0
3 years ago
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