Step-by-step explanation:
a=8cm
b=15cm
c=17cm
s=a+b+c/2
=8+15+17/2
=40/2
=20
Using heron's formula,
ar. of triangle= √s(s-a)(s-b)(s-c)
=√20(20-8)(20-15)(20-17)
=√20×12×5×3
=√2×2×5×2×2×3×5×3
=2×2×3×5
=60cm²
On side 17cm,
Ar. of triangle=1/2×b×h
60=1/2×17×h
∴h=60×2/17
=7.05 cm
is the score of Jonathan.
<h3 /><h3>What is percentage?</h3>
Percentage, which may also be referred to as percent, is a fraction of a number out of 100%. Percentage means "per 100" and denotes a piece of a total amount.
To calculate the percentage , Use the percentage formula:

According to the question:
Sarah scored on the spelling test = 
Jonathan scored = 75%
By formulating both the values;

= 
Therefore ,
is the score of Jonathan.
Learn more about percentage here:
brainly.com/question/13450942
#SPJ1
Answer:
a
Use the distance formula to see if at least two sides are congruent.
Step-by-step explanation:
If the square of the length of the longest side of a triangle is equal to the sum of the squares of the other two sides, then the triangle is a right triangle
Answer:
23/100
Step-by-step explanation:
0.23 means two digits after decimal point so it is 100
then we write 23 /100 and then simplify
23 is a prime number , it can't be simplified
Answer:
268.34 m^2
Step-by-step explanation: