Answer:
Given:
perpendicular [p]=9cm
base[b]=15cm
length[l]=4cm
we have
the volume of this triangular prism=area of traingle. ×length=1/2 p×b×l
=½×9×15×4=270cm³
270cm³ is a required volume.
<u>Answer:</u>
Half-life of uranium-238 
that of uranium-234
<u>Explanation:</u>
Half time of uranium-238 = 
years
Half time of Uranium-234 = 
years
To find how much times greater the half life of uranium-238 is from uranium-234
= 
=
=
Hence Uranium-238 is than Uranium-234
The value of the expression 2n - 1 when n = 7 is 13.
<h3>Equation</h3>
2n - 1
when n = 7
- Substitute n = 7 into the equation
2n - 1
= 2(7) - 1
= 14 - 1
= 13
<h3>What is mathematical expression?</h3><h3 />
Mathematical expression is an expression which involves the combination of numbers and variables in a valid way, in a function of addition, subtraction, multiplication, division and exponentiation
Therefore, the value of the expression 2n - 1 when n = 7 is 13.
Learn more about equation:
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0.31 is greater than 0.24
Hope it helps!!
Answer:
34 explanation is below
Step-by-step explanation:
Start off with PEMDAS
P-Parentheses
E-Exponents
M- Multiplication
D-Division
A- Addition
S- Subtraction
In order of witch comes first
so 8x3=24
10+24=34
34-2+2=34
