Gilda walks to the train station. If she walks at the rate of 3 mph, she misses her train by 7 minutes. However, if she walks at the rate of 4 mph, she reaches the station 5 minutes before the arrival of the train. Find the distance Gilda walks to the station.David knew he made a mistake when he calculated that Gilda walks 123 miles to the station. Read through David's calculations:Using d = rt, the distance is the same, but the rate and time are different.If Gilda misses the train, it means the time t needs 7 more minutes so d = 3(t + 7).If she gets to the station 5 minutes early means the time t can be 5 minutes less so d = 4(t - 5).3(t + 7) = 4(t - 5)3t + 21 = 4t - 20t = 41d = rt, so d = 3(41) = 123Find David's mistake in his calculations. In two or more complete sentences, explain his mistake. Include the correct calculations and solutions in your answer.
Answers
d= 3(t+7) because Gilda is 7 minutes late when travelling 3 mph
d= 4(t-5) because Gilda is 5 minutes early at 4 mph
d= 3t + 21
d= 4t -20
3t +21 =4t -20
41=t
d= 3(41) +21= 144
The distance is 144 miles.
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Juanita begins to factor an expression as shown.x2 + 3x – 18 = (x + )(x – ) The numbers that should be placed in the boxes, from left to right, are .
Which is greater -6 or -3
Answers
-3y(4y²) - 3y(-9)
-3y(4y² - 9)
-3y(4y² + 6y - 6y - 9)
-3y(2y(2y) + 2y(3) - 3(2y) - 3(3))
-3y(2y(2y + 3) - 3(2y + 3))
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Answers
The y-intercept of any graph is the point where x=0.
y = 1/2 log(0 + 1) - log(0 +10)
y = 1/2 log(1) - log(10)
log(1) = 0
log(10) = 1
y = 1/2 (0) - 1
y = -1
That's all there is to it. I'll bet you totally froze when you saw all those logs.
Answers
48+40=88
88+40=128
128+50=178
Thats all i found so far in the pattern
30,40,40,50
then it drops
by 140 then adds by 30..
I dont know how else to explain it
adjusted balance
b.
average daily balance
c.
previous balance
d.
usual balance
Answers
The method used by credit card companies to calculate finance charges in which it is most favorable to the card issuer is the previous balance method. This is computed by charging the interest into the new billing period. This is least favorable to cardholder thus, most favorable to card issuer.
Answer:
usual balance
Step-by-step explanation:
Answers
The factors of 16 are 1, 2, 4, 8, 16.
The factors of 9 are 1, 3, 9.
The only factor common to both is 1.
Evaluate the expressions:
h(x)=12/x
h(-2)
h(a)
Answers
Answer:
h(-2) = -6, h(a) = 12/a
Step-by-step explanation:
h(-2)
It says that you are supposed to do 12 divided by the number in the parentheses, so you have 12 / -2 = -6.
h(a)
Again, you have to do 12 divided by the number in the parentheses, so you have 12/a.