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lapo4ka [179]
3 years ago
8

Find the value of x when the area of a triangle is 22 in2 and has a base of 3x-1 and height of x.

Mathematics
1 answer:
Virty [35]3 years ago
5 0
The formula for the area of a triangle is (1/2)bh = A
when we plug in the numbers, we get (1/2)(3x-1)x = A
using the distributive property we get (1.5x - .5)x = A
Then its 1.5x^2 - .5x = A
then if we factor out 0.5x we get 0.5x(3x-1) = A
then with the zero product property, 0.5x can equal 0 and x would need to equal 0.
if 3x-1 = 0 , then 3x = 1 then x = 1/3. so our answer would be 1/3 I'm pretty sure because a length cannot be 0
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Look at the question
ziro4ka [17]

Answer:

Step-by-step explanation:

The better buy is the one where you get more area of pizza per dollar (area/price).

Since the problem gives diameter, we assume the pizzas are circle-shaped.

Circle Area = pi x (radius)², and radius r = 1/2 of diameter d.

*************************************************************************************

Pizza 1: d = 8 and price is $10

r = 1/2 x d = 4

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**********************************************************************************

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*** area/price for Pizza 2 = 49π/16 = 3.0625π area per dollar

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3 0
3 years ago
What is a factor of 144-49x^2
Alenkinab [10]
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