People were invited to a party. 5 people were Invited but only 2 people came (2/5). Then , apparently, half of the people (1/2) invited from a different party came to that one. 2 lots of that 1/2.2/5 x 1/2. I hope this helps.
x - 7 < -4
-12/x> 10
x + 7 > 5
Substitute the value of x = -2 to the inequalities:
-3x < 1
(-3)(-2) < 1
6 < 1 FALSE
x - 7 < -4
-2 - 7 < -4
-9 < -4 TRUE
-12/x > 10
-12/(-2) > 10
6 > 10 FALSE
x + 7 > 5
-2 + 7 > 5
5 > 5 FALSE
Answer: x - 7 < -4
Answer: x - 7 < -4
Step-by-step explanation:
x - 7 < -4, plug in the -2.
-2 - 7< -4, simplify; -2+-7=-9
=- 9<-4
Answer:
B. The test contains 10 three-point questions and 14 five-point questions.
Step-by-step explanation:
Let us first find the solution to the system of equations.
x+y= 24
3x+5y= 100
We use substitution method.
x=24-y
Replacing the value of x in the second equation.
3(24-y)+5y=100
Then solve for y.
72-3y+5y=100
2y=100-72
2y=28
y=14
To find x let us replace the value of y in x=24-y
x=24-14
x=10
This means that the test has 14 five-point questions and 10 three point questions.
2. Hugo rides his bike at an average rate of 15 mph. Write an equation to represent the relationship between the distance, d, that Hugo rides and the number of hours, h, that he rides. How far will Hugo ride if he rides his bike for 3 hours?
3. Every time Luke puts a dime into the parking meter, he gets 10 minutes of parking time. The equation p = 10d represents the time, p, he can park after he puts d dimes into the meter. Analyze the variables. If he puts 5 dimes into the meter, can Luke park for more than or for less than 1 hour?
Answer:
243
Step-by-step explanation:
speed = distance/time
81 = x/3
81 * 3
= 243
Answer:
243 miles
Step-by-step explanation:
To find the distance you would multiply the time by the speed.
81 times 3 is 243