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Natasha2012 [34]
3 years ago
7

Whoever gets it right ill reward brainlyess answer

Mathematics
2 answers:
zepelin [54]3 years ago
8 0
1. Set up a proportion:
18/1:90/x
2. Cross multiply:
18x=90
3. Solve:
90/18=5
5 hours
irga5000 [103]3 years ago
4 0
The correct answer is 5h
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The desert temperature, H, oscillates daily between 30ºF at 4am and 70ºF at 4pm. Write a possible formula for H in terms of t, m
densk [106]
<span>The find step is to find C which is the vertical shift. This is the average between the maximum and minimum. So its 30+70=100/2= 50. the amplitude (A) take the average of the difference between max. temp. and min. value So 70-30= 40/2= 20, but it becomes -20 because the graph is shifted up 50 degrees and decreases to 30 at 4a.m. Then the period is 2pi/B which is 2pi/24, which equals pi/12. A=-20 B= pi/12 C=50</span>
5 0
3 years ago
What is the square root of -1?
Minchanka [31]
The square root of -1 “i”
5 0
3 years ago
Gavin needs $80 to buy a fish tank. He has saved $8 and plans to work as a babysitter to earn $9 per hour. Which inequality show
andrezito [222]
So the answer would be 8+9n≥80. The reason why is because he has $80 and he saved $8 and he earned $9 for each hour but we do not know how many hours so that is why it is n. and it says minimum so u might think that it might be ≤ but my sister says to think the opposite so the symbol will be ≥.

<u>Check: </u> <u>IT SAYS THAT N IS GREATER THAN 8 SO CHOOSE A NUMBER GREATER THAN 8 WHICH CAN BE 9.</u><u>
</u>
8+9n≥80
8+9*9≥80
8+81≥80
90≥80, so this makes sense.
3 0
3 years ago
Read 2 more answers
The Mariana Trench in The Pacific Ocean is about 36,201 feet deep. Based on these data how many feet deeper is the marina trench
Mazyrski [523]

Answer:

The answer is 27,493 Puerto Rico Trench Depth Deepest Point In the Atlantic Ocean

Step-by-step explanation:

8 0
3 years ago
Let f(x) = 3x2 - 6x + 2. Find f(-2)
Neporo4naja [7]

Answer:

just put

x =  - 2

f( x) = 3 {x}^{2}  - 6x + 2

f( - 2) = 3 {( - 2)}^{2}  - 6( - 2) + 2

f( - 2) = 3 \times 4 + 6 \times 2 + 2 =12+12+2 \\ f(-2)= 26

3 0
3 years ago
Read 2 more answers
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