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3 years ago

What is 0.000084 sceincetific notation help me out and can u explain how to get the answer

Mathematics

2 answers:

damaskus [11]3 years ago

7 0

Answer:

8.4 x 10'5

Step-by-step explanation:

move the decimal point to make a number between 1 and 9.9. so 8.4. count how many times the decimal point moves. that's the power of 10

Kaylis [27]3 years ago

6 0

Answer:

.84 x 10 ^4

Step-by-step explanation:

hope this helps!!!

i just got done with these, please mark brainliest

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Layton made 117$ for 9 hours of work.at the same rate,how many hours would she have to work to make $65?

Bogdan [553]

Since she makes $13 per hour, she would have to work 5 hours to make $65.

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3 years ago

What is the exact value of sin 45° ? enter your answer, as a simplified fraction.

Ne4ueva [31]

Look at the picture.

Use the Pythagorean theorem:

$b^2=a^2+a^2\\\\b^2=2a^2\to b=\sqrt{2a^2}\\\\b=\sqrt{a^2}\cdot\sqrt2\\\\b=a\sqrt2$

$\sin\theta=\dfrac{opposite}{hypotenuse}\\\\\theta=45^o,\ opposite=a,\ hypotenuse=a\sqrt2$

substitute

$\sin45^o=\dfrac{a}{a\sqrt2}=\dfrac{1}{\sqrt2}\cdot\dfrac{\sqrt2}{\sqrt2}=\dfrac{\sqrt2}{2}$

Answer: $\sin45^o=\dfrac{\sqrt2}{2}$

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2 years ago

A, B & C form a triangle where Z

malfutka [58]

Answer:

BC≈8,38

Step-by-step explanation:

AB=a

BC=c

CA=b

a²+b²=c²

3.3²+7.7²=c²

√70,18=√c²

c≈8,38

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2 years ago

Please assist me with this problem: part 11

Lady bird [3.3K]

Answer:

a² = b² -w² +2wx

Step-by-step explanation:

The algebra is pretty straightforward. Expand the expression in parentheses and add x².

b² -(w -x)² = e² = a² -x²

b² -(w² -2wx +x²) = a² -x² . . . . . expand the square

b² -w² +2wx -x² = a² -x² . . . . . . distribute the minus sign

b² -w² +2wx = a² . . . . . . . . . . . . add x²

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2 years ago

Compare the equation, y = 9x - 4x2, the graph below, and the table below. Which has the steepest rate of change from x = 1 to x

jeka57 [31]

The correct answer to this question is C. equation, –3

The equation is
y = 9x - 4x^2
y = -4x^2 + 9x
y = -x(4x - 9)

The steepest rate of change from x = 1 to x =2

x = -1 ; y = 0
x = 1 ; y = 2
x = 2 ; y = 0
x =3 ; y = -4

So, based from the table show, the steepest rate of change is C. equation, –3

4 0

3 years ago

What is 0.000084 sceincetific notation help me out and can u explain how to get the answer​

What is 0.000084 sceincetific notation help me out and can u explain how to get the answer