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Leni [432]
3 years ago
14

A typical red blood cell in human blood has a diameter of approximately 0.0007 cm. Enter this diameter in scientific notation.

Mathematics
1 answer:
jonny [76]3 years ago
8 0

Answer:

7-E -4

Step-by-step explanation:

My school supplyes us with a calculator and lucky for you it does scientific notation

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Determine whether the rule represents an exponential function. Explain why or why not.
Alenkasestr [34]

Answer:

Yes.

Step-by-step explanation:

Exponential Parent Function: f(x)= a(b^{x})

If we write out the equation:

y = 6(5)^{x}

Whenever we have an exponent of <em>x</em>, it is a exponential function. The 5 is simply the base of the exponent and the 6 means we are vertically stretching the graph by a factor of 6.

5 0
3 years ago
What are the roots of the equation x^2+6x-9=10?
Ronch [10]

Answer:

-3+2sqrt7

-3-2sqrt7

Step-by-step explanation:

x^2+6x-9=10

x^2+6x-9-10=0

x^2+6x-19=0

ax^2+bx+c=0

a=1 b=6 c=-19

As cannot be solved by completing square we will use quadratic equation

x= (-b+sqrt(b^2-4ac))/2a     and      x= (-b-sqrt(b^2-4ac))/2a

x= (-6+sqrt(6^2-4*-19))/2     and      x= (-6-sqrt(6^2-4*-19))/2

x=(-6+sqrt(36+76))/2           and      x=(-6-sqrt(36+76))/2

x=(-6+4sqrt7)/2                   and       x=(-6-4sqrt7)/2

x=(-3+2sqrt7)                       and      x=(-3-2sqrt7)

x=2.29                                 and      x= -8.29

3 0
3 years ago
What is the value of the expression 24 – (7 + 5) ÷ 6 + 8?
Ierofanga [76]

Answer:

30

Step-by-step explanation:

following the bodmas rule

we will get the answer 30

4 0
3 years ago
Read 2 more answers
What point is on the graph of every direct variation equation
Alexeev081 [22]
Answer: The point (0,0)
This point is also known as the origin

The reason why is because every direct variation equation is of the form y = k*x
where k is some fixed number

If we plugged in x = 0 it leads to y = k*x = k*0 = 0. So (x,y) = (0,0)
4 0
3 years ago
For the right triangle shown, the lengths of two sides are given. Find the third side. Leave your answer in simplified, radical
KATRIN_1 [288]

The Pythagorean theorem tells you

... a² + b² = c²

so

... a² = c² - b² = 16² - 9² = 256-81 = 175

... a = √175 = √(25·7)

... a = 5√7

4 0
3 years ago
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