Answer:
=5/10 =0.27 =2.7
2): if it is 5 outside and the temperature will drop 17 in the next six hours, how cold will it get?
3): Josie has $47 left on her checking account. If she writes a check for $55 what will Josie's balance be?
4): joe is playing a game with a regular die. If the number that turns up is even, he will gain 5 times the number that comes up. If it is odd, he will lose 10 times the number that comes up. He tosses a 3 express the results as an integer.
5): it will be -12 tonight. The weatherman predicts it will be 25 warmer by noon tomorrow. What will the temperature be by noon tomorrow?
6): the average temperature at the South Pole is -45 f. The average temperature on the equator is 92 f. How much warmer is the average temperature on the equator than at the South Pole?
7): Felix reported that the coldest day on record for his town was five times colder than yesterday's temperature, -4 c. What was the temperature of the coldest day on record in Felix's town?
8): the elevation of mt. Everest is 29,028 feet. The elevation of the Dead Sea is -485 feet. What is the difference in the elevation between mt. Everest and the Dead Sea?
These are 8 questions and 8 answers.
Question 1) a deep sea exploring ship is pulling up a diver at the rate of 25 feet per minute. The diver is 200 feet below sea level. How deep was the diver 10 minutes ago?
Answer: 450 feet below see level ( -450 feet)
Explanation:
i) pulling up rate: 25 feet / minute
ii) number of feet ascended
iii) number of feet ascended in 10 minutes: 25 feet / minute × 10 minutes = 250 feet
iv) current deep: - 200 feet
v) deep 10 minutes ago: -200 feet - 250 feet = - 450 feet. Which means 450 feet below sea level.
Question2) if it is 5 outside and the temperature will drop 17 in the next six hours, how cold will it get?
Answer: - 12 (12 below zero)
Explanation:
i) Future temperaure = current temperature - decrease in temperature
ii) Future temperature = 5 - 17 = - 12, which means 12 below zero
Question3) Josie has $47 left on her checking account. If she writes a check for $55 what will Josie's balance be?
Answer: - $ 8 (she will owe 8$)
i) Balance = current balance - new checks
ii) Balance = $ 47 - $ 55 = - $8 (she will owe $ 8)
Question 4) Joe is playing a game with a regular die. If the number that turns up is even, he will gain 5 times the number that comes up. If it is odd, he will lose 10 times the number that comes up. He tosses a 3 express the results as an integer.
Answer: he will lose 30.
Explanation:
i) 3 is odd
ii) 1Therefore, the result is that he will lose 10 times the number that comes up
⇒ Loss = 10 × 3 = 30
Question 5) it will be -12 tonight. The weatherman predicts it will be 25 warmer by noon tomorrow. What will the temperature be by noon tomorrow?
Answer: 13
Explanation:
i) Current temperature: - 12
ii) Change foreseen: + 25 (increase)
iii) Foreseen temperature = - 12 + 25 = 13
Question 6) the average temperature at the South Pole is -45 F. The average temperature on the equator is 92 F. How much warmer is the average temperature on the equator than at the South Pole?
Answer: 137 F
Explanation:
i) Temperature at the South Pole = - 45F
ii) Temperature on the Equator = 92 F
iii) Difference in temperature = temperature on the Equator - temperature and the South Pole
iv) Difference in temperature = 92F - (-45F) = 92F + 45F = 137F
Remember the law of signs: ( - ) × ( - ) = +
∴ It is 137F warmer on the Equator than at the South Pole.
Question 7) Felix reported that the coldest day on record for his town was five times colder than yesterday's temperature, -4 c. What was the temperature of the coldest day on record in Felix's town?
Answer: - 20C
Explanation:
i) Yesterday's temperature = - 4°C
ii) Coldest day's temperature = 5 × (-4C) = - 20C
Conclusion: the coldest day's temperature is -20°.
Question 8) the elevation of mt. Everest is 29,028 feet. The elevation of the Dead Sea is -485 feet. What is the difference in the elevation between mt. Everest and the Dead Sea?
Answer: 29,513 feet
Explanation:
i) Elevation of Mt Everest = 29,028 feet
ii) Elevation of the Dead Sea = - 485 feet
iii) Difference in the elevation = Elevation of Mt Everest - elevation of the Dead Sea
iv) Difference in the elevation = 29,028 feet - ( - 485 feet) = 29,028 feet + 485 feet = 29,513 feet.
Remember the law of the signs: ( - ) × ( - ) = +
its B on edge-nuity just took the test
30 km
120 km
160 km
80 km
Answer:the boat travel of a constant speed of 120km
Step-by-step explanation:
4x30=120
A. xsquared + 3x – 4
B. xsquared + 7x - 4
C. – xsquared-7x -4.
D. - xsquared + 3x -4
Answer:
Step-by-step explanation:
Hello
Select the expression represented by the tiles. Remember, red tiles represent negative
quantities.
A. xsquared + 3x – 4
B. xsquared + 7x - 4
C. – xsquared-7x -4.
D. - xsquared + 3x -4
x^2 + 5x - 2x - 4
= x^2 + 3x - 4
Answer A)
Answer:
A x^2 +3x-4
Step-by-step explanation:
Answer:
Step-by-step explanation:
pi = 3.14159265359
4 (one-fourth x minus three-fourths y = 34) right-arrow x minus 3 y = 136
24 (three-fourths x + one-eighth y = negative 12) right-arrow 18 x + 3 y = negative 288
Answer:
thus, x=-34 and y=170/-3
Step-by-step explanation:
4((1/4)*x-(3/4)*y)=34
x-3y=136
24((3/4)*x+(1/8)*y)=12
18x+3y=-288
4x-3y=34⇒x-3y=136
18x+3y=12⇒18x+3y=-288
lets solve 4x-3y=34⇒x-3y=136 first:
4x-3y=34
x-3y=136
4x-3y=34
-x+3y=-136
3x=-102
x=-102/3
x=-34
lets plug in x to one of the equations, since both equations are equal to each other:
4x-3y=34
4(-34)-3y=34
-136-3y=34
-3y=170
y=170/-3
now lets solve: 18x+3y=12⇒18x+3y=-288
18x+3y=12
18x+3y=-288
18x+3y=12
-18x-3y=288
0300
so, this system doesn't work
thus, x=-34 and y=170/-3