Answer:
1) the equation would be .80x+65 is less than or equal to 125. x= amount of balloons they can buy. the answer for the equation would be less than or equal to 75.
2) 4.8 miles per hour
Step-by-step explanation:
Answer:
The cost of a chair is $100
The cost of a table is $150
Step-by-step explanation:
The the missing number 140 because you add the 40 + the 140 and you get 180
We know that the angles of a triangle sum to 180°. For ΔABC, this means we have:
(4x-10)+(5x+10)+(7x+20)=180
Combining like terms,
16x+20=180
Subtracting 20 from both sides:
16x=160
Dividing both sides by 16:
x=10
This means ∠A=4*10-10=40-10=30°; ∠B=5*10+10=50+10=60°; and ∠C=7*10+20=70+20=90.
For ΔA'B'C', we have
(2x+10)+(8x-20)+(10x-10)=180
Combining like terms,
20x-20=180
Adding 20 to both sides:
20x=200
Dividing both sides by 20:
x=10
This gives us ∠A'=2*10+10=20+10=30°; ∠B'=8*10-20=80-20=60°; and ∠C'=10*10-10=100-10=90°.
Since the angle are all congruent, ΔABC~ΔA'B'C' by AAA.
