Answer:
68 years old
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
Answer:
1). Options (B) and (E)
2). First train is going faster than the second train.
Step-by-step explanation:
1). Rate of 2 gallons of vinegar = $3
Therefore, per gallon rate of vinegar = = $1.5
In $3 quantity of vinegar chef will get = 2 gallons
Therefore, quantity of vinegar chef will get in $1 = gallons
Option (A).
Price of 4 gallons = 4 × $1.5 = $6.00
False.
Option (B)
Price of 1 gallon = $1.50
True
Option (C)
Price of 30 gallons = 30 ×$1.5 = $45
False.
Option (D)
In $2 number of gallons of vinegar chef will get = gallons
False
Option (E)
Number of gallons of vinegar chef gets in $1 =
True
Therefore, Options (B) and (E) are the correct.
2). Speed =
For first train,
Speed =
= 90 miles per hour
For second train,
Speed =
= 40 miles per hour
Since, 90 miles per hour > 40 miles per hour
First train is going faster than the second train.
Answer:
(a)
(b)
Step-by-step explanation:
Take of of each term.
For Question a
Given that x = 3, y = 4, and dx/dt = 5.
For Question b
Given that x = 4, y = 3, and dx/dt = -5.
Answer:10x^2+11xy-6y^2
Step-by-step explanation:
(
2
x
+
3
y
)
(
5
x
−
2
y
) =
2
x
(
5
x
−
2
y
)
+
3
y
(
5
x
−
2
y
)
=
10
x
2
−
4
x
y
+
15
x
y
−
6y
2
=
10
x
2
+
11
x
y
-6
y
2
.