Answer:
Step-by-step explanation:
Lets break each problem down before we answer it so it help to understand what we are looking for.
Vocabulary:
Unit Rate: how many units of the first type of quantity corresponds to one unit of the second type of quantity. (12 inches to 1 foot)
Unit Rates:
Problem 1: Top left
A boy delivers 189 papers in 3 hours
Unit Rate: 63 papers delivered per hour
In simple terms, all we are doing is creating a fraction then simplifying it :)
Problem 2: Top right
It costs $8.40 for 12 cupcakes
Unit Rate: For every $0.70, it costs one cupcake
Problem 3: Bottom left
5 miles in 50 minutes
Unit Rate: For every one mile ran, it takes 10 minutes
Problem 4: Bottom right
375 passengers distributed between 5 cars
Unit Rate: For ever 75 passengers, there is one car
Hope this Helps!
Answer:
X would equal 9 5
Step-by-step explanation:
Hope I helped
Answer:
3 x^2 +12x-9
Step-by-step explanation:
5x^2 - (2x-3)^2
We need to FOIL the second term
(2x-3)^2 = (2x-3) (2x-3) = 4x^2 -6x-6x+9 = 4x^2 -12x+9
Replacing it in to the original equation
5x^2 - (4x^2 -12x+9)
Distribute the minus sign
5x^2 - 4x^2 +12x-9
Combine like terms
x^2 +12x-9
Step-by-step explanation:
By Pythagoras' Theorem,
we have x² + (x + 2)² = (x + 4)².
=> 2x² + 4x + 4 = x² + 8x + 16
=> x² - 4x - 12 = 0
(The constants are a = -4, b = -12)
=> (x - 6)(x + 2) = 0
=> x = 6 or x = -2
The value x = -2 is rejected as side lengths cannot be negative.
Hence we have x = 6.
=> AB = 6cm, BC = 8cm, AC = 10cm.
P.S. What you see above is the full solution. You just need to type x² - 4x - 12 = 0 in the blank.
Answer:
the store ofc
Step-by-step explanation:
you could see people you know, you can eat food, free wifi. and you can buy stuff.
