A triangle's perimeter is x2-3x+10. Side 1 is -8x+5 and side 2 is 3x+3. What is the third side?
Answers
p = s1 +s2+s3
x^2-3x+10 = -8x+5 +3x+3 +s3
combine like terms
x^2 -3x+10 = 5x+8 +s3
subtract (5x+8) from each side
x^2 -8x +2 =s3
The third sdie is x^2 -8x+2
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Answers
Answer:
43.30cm²
Step-by-step explanation:
Use Herons formula
S = (a+b+c)÷2
Where a, b, c is the sides of the triangle
If perimeter is 30cm
Since it's an equilateral triangle, all sides are equal.
Then
Perimeter = 3a = 30
a = 30/3 = 10cm
b = 10cm , c = 10cm
Therefore ,s= (10+10+10)÷2 = 30÷2 = 15cm
From Herons formula
Area = square root of s(s-a)(s-b) (s - c)
Area = sq rt 15(15 - 10)(15 - 10)(15 - 10)
Area = sq rt 15.× 5 × 5 ×5
Area = sq rt 1875
Area = 43.30cm²
I hope this was helpful, please rate as brainliest
Answer:
≈ 43.3 cm²
Step-by-step explanation:
The area (A) of an equilateral triangle is calculated as
A = ( s is the side length )
The 3 sides of an equilateral triangle are congruent, thus
s = 30 ÷ 3 = 10 cm
A = =
= 25
≈ 43.3 cm²
Answers
=180 x 0.7
=$126
Then you do 18*3 = 54 (This is 30%)
Then you minus this from $180: 180-54= $126
Answers
Final answer:
The unit rate of the bicyclist's speed is found by dividing the distance covered (1/5 mile) by the time spent (1/65 hour). The result is 13 miles per hour.
Explanation:
In this problem, you're asked to find a unit rate. A unit rate is a rate in which the second term is 1. So, to find a unit rate, you divide the first term with the second term.
In this case, the bicyclist's rate is 1/5 mile in 1/65 hour. If you divide 1/5 by 1/65, you find the rate of bicycle speed per 1 hour, which is the unit rate:
1/5 miles divided by 1/65 hours = (1/5) * (65/1) = 13 miles/hour
So, the bicyclist's unit rate is 13 miles per hour.
Learn more about Unit Rate here:
#SPJ11
Answers
3/2cm x 1/2cm x 4cm
3cm^3 is your answer.
Answers
then 3 divided by 4= 0.75
the answer is 0.75
Hope I helped! :D
Answers
boys is second so it shouldb be indenomenaotr (bottom)
girls/boys
12girls/5boys=2.4girls/boy
answer is B
this guy is right i took this quiz 101%