Answer:
a21 = -61
Step-by-step explanation:
(subtract to eliminate a₁)
9 = -3d
d = -3
-19 = a₁ + (6)(-3)
-1 = a
a21 = -1 + (21 - 1)(-3)
= -61
The 875 times smaller is 4 x 10−7 than 3.5 x 10−4.
<h3>What is the arithmetic operator?</h3>
Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,
Summation = addition of two or more numbers or variable
For example = 2 + 8 + 9
Subtraction = Minus of any two or more numbers with each other called subtraction.
For example = 4 - 8
Division = divide any two numbers or variable called division.
For example 4/8
Multiplication = to multiply any two or more numbers or variables called multiplication.
For example 5 × 7.
Given the two quantities 4 x 10−7 and 3.5 x 10−4
Now, if we divide this then
⇒ (3.5 x 10−4)/(4 x 10−7)
⇒ (35/40) × 10³
⇒ 875
Hence "The 875 times smaller is 4 x 10−7 than 3.5 x 10−4".
To learn more about the arithmetic operators,
brainly.com/question/25834626
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Answer:
Step-by-step explanation: he hasn't found the right store yet..
Answer:
(x + 8)^2.
Step-by-step explanation:
x^2 + 16x + 64
8 + 8 = 16 and 8^2 = 64 so the factors are
(x + 8)(x + 8) or (x + 8)^2
