Justin weighs 15 pounds less than Greg weighs. Half of Greg’s weight is 75 pounds less than Justin’s weight. How much does each of them weigh
Answers
Justin weighs 165 pounds.
Greg weighs 180 pounds.
If:
j - Justin's weight
g - Greg's weight
Then the system of equations is:
j + 15 = g ⇒ g = j + 15
1/2g = j - 75 ⇒ j = 1/2g + 75
We can replace j in the first equation:
g = 1/2g + 75 + 15
g - 1/2g = 90
1/2g = 90
⇒ g = 90 ÷ 1/2 = 180
Thus, Greg weighs 180 pounds.
Now, using the first equation, we will calculate Justin's weight:
j + 15 = g ⇒ j = g - 15
g = 180
Thus
j = g - 15 = 180 - 15 = 165
Therefore, Justin weighs 165 pounds.
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Answers
Answer:
The position of the equipment elevator is 180 feet deep
The position of the miner's elevator is 156 feet deep
The equipment elevator is deeper.
Step-by-step explanation:
From the question,
For the equipment elevator
Velocity (v) = 4 feet/second
and for the miner's elevator,
Velocity (v) = 13 feet/second
To determine the position of each elevator, the position can be related to the distance covered.
From
Velocity = Distance / Time
Distance = Velocity × Time
Now, from the question,
The equipment elevator first descends for 33 seconds, after which the miner's elevator then start to descend both elevators descend for another 12 seconds. That is, the equipment elevator descends for a total of (33+12) seconds while the miner's elevator descends for 12 seconds.
Now, for the equipment elevator
Velocity = 4 feet/second
Time = (33 + 12 seconds) = 45 seconds
From
Distance = Velocity × Time
Distance = 4 × 45
Distance = 180 feet
The position of the equipment elevator is 180 feet deep
For the miner's elevator,
Velocity = 13 feet/second
Time = 12 seconds
Also, from
Distance = Velocity × Time
Distance = 13 × 12
Distance = 156 feet
The position of the miner's elevator is 156 feet deep
Hence, the equipment elevator is deeper.
Answers
x^2 - 12x + (-6)^2 - (-6)^2 = 61, or
(x-6)^2 -36 = 61, or
x-6 = plus or minus sqrt(97), or
x = 6 plus or minus sqrt(97)
-12^2-(4•1•61)= d
X= (-b-sqr (d) ) / 2a or x=(-b+sqr (d) )/2a
Ricky’s square yards mowed:
Ricky’s time (hr.):
Answers
Final answer:
To find Ricky's values, set up a proportion and solve for Ricky's square yards mowed and time.
Explanation:
To find the values for Ricky, we can use a proportion. Since Jake mowed 216 sq.yd. in 3 hr, we can set up the proportion as 216/3 = Ricky's square yards mowed/2. To solve for Ricky's square yards mowed, we can cross multiply and divide: 216 * 2 = 3 * Ricky's square yards mowed. Therefore, Ricky's square yards mowed = 432 sq.yd. Next, we can find Ricky's time by setting up another proportion: 216/3 = 432/Ricky's time. Cross multiplying and dividing gives us Ricky's time = 6 hr.
Learn more about Proportion here:
#SPJ3
Answer:
108 Square Yards
2 Hours
Step-by-step explanation:
PLEASE MARK BRAINLIEST
All you do is look at the question and it says he mowed 108 square yards in 2 hours.
A. The survey question is worded in a way that doesn’t introduce bias.
B. It should be reworded as a “yes or no” question to avoid bias.
C. This is a sensitive question because it relates to privacy and security.
D. It influences the respondent to say they are likely to install the security system.
Answers
Answer:
D. It influences the respondent to say they are likely to install the security system.
Step-by-step explanation:
Mentioning the recent influx of burglaries is a tactic to scare people into installing their security system.
t – 7 > 12 or t – 7 < –12
B.
t – 7 < 12 and t – 7 > –12
C.
t – 7 < 12 or t – 7 > –12
D.
t – 7 > 12 and t – 7 < –12
Answers
B) 25%
C) 33%
D) 50%