Answer:
Audrey can afford 4 hours of lesson.
Step-by-step explanation:
Given that:
Amount Audrey has to spend = $111
Cost of racket = $55
Cost per lesson = $14
Let,
y be the total cost
x be the number of hours
According to given statement;
y = 14x + 55
111 = 14x + 55
111 - 55 = 14x
14x = 56
Dividing both sides by 14
Hence,
Audrey can afford 4 hours of lesson.
Answer:
(0,3)
Step-by-step explanation:
7x-2y=-6
8x+y=3
Multiply the second equation by 2 so we can eliminate y
2(8x+2y) = 2*3
16x+2y=6
Add the first equation to the modified second equation
7x-2y=-6
16x+2y=6
--------------------
23x = 0
Divide by 23
23x/23 = 0/23
x =0
Now we need to find y
8x+y = 3
0+y =3
y=3
(0,3)
Answer: 3.20 hours
Step-by-step explanation:
Hi, to answer this question, first we have to convert the kilometers into miles:
Since: 1 mile = 1.61 km
For 350km:
350 /1.61 = 217.39 miles
Next, we have to apply the next formula:
- Time = distance / speed rate
Replacing with the values given:
Time = 217.39 mi / 68 mi/h = 3.20 hours
Feel free to ask for more if needed or if you did not understand something
Perimeter:
add all sides
(1/2)+(1/2)+(1/2)+(1/2)+1+1 = 1+1+1+1 =4cm
(m+2)⁴ = ((m+2)²)²
= (m² + 4+ 2m)²
= m⁴ + 8 + 4m² + 8m² + 16m + 4m³ .........( (a+b+c)² = a²+b²+c²+2ab+2bc+2ac)
= m⁴ + 8 + 12m² + 16m + 4m³