All categories

2 years ago

Write 0.000021 in scientific notation.

Mathematics

2 answers:

astraxan [27]2 years ago

7 0

Answer:

2.1 × 10^-5

Step-by-step explanation:

Aliun [14]2 years ago

5 0

Answer:

2.1 x $10^{-3}$

Step-by-step explanation:

Hope this helps!

You might be interested in

The volume of the cylinder below is 108π cm^3.

tresset_1 [31]

Answer:

i think it is d or c idk

Step-by-step explanation

108 divided by 3 is 36 idk if you have to divide by 2 but i think its d

6 0

3 years ago

un automovil tiene ruedas de 80 cm de diametro el automovil avanca 10 metros en 5 segundos a velocidad constante

Bond [772]

<h2>No sé exactamente lo que está preguntando, pero espero que esto ayude-</h2>

Answer:

1000 centímetros = 10 metros por 5 segundos a velocidad constante

Step-by-step explanation:

1 centímetro = 0.01 metros

80 centímetro = 0.08 metros

Lo siento si esto no tiene sentido o no está traducido correctamente. Solo hablo inglés con fluidez, así que me disculpo si cometí un error. Espero que ayude.

7 0

2 years ago

If sec theta = - √30 / 3, find cos theta.<br> if sin(-theta) = -0.97, find cos (π/2 - theta).

Cloud [144]

Step-by-step explanation:

$\cos \theta = \frac{1}{ \sec\theta } = - \frac{3}{ \sqrt{30} } = - \frac{3 \sqrt{30} }{30} = - \frac{ \sqrt{30} }{10}$

$\cos( \frac{\pi}{2} - \theta )= \cos \frac{\pi}{2} \cos \theta + \sin \frac{\pi}{2} \sin \theta$

Note that

$\sin( - \theta) = - \sin \theta$

$\cos \frac{\pi}{2} = 0 \: \: \: \: \: \sin \frac{\pi}{2} = 1$

Therefore,

$\cos( \frac{\pi}{2} - \theta ) = 0.97$

5 0

2 years ago

Solve 2(b − 3) ≥ 3(3 − b) and describe the graph of the solution. Show all your work.

solong [7]

Answer:

$\large\boxed{b\geq3\to b\in[3,\ \infty)}$

Step-by-step explanation:

$2(b-3)\geq3(3-b)\qquad\text{use the distributive property:}\ a(b+c)=ab+ac\\\\(2)(b)+(2)(-3)\geq(3)(3)+(3)(-b)\\\\2b-6\geq9-3b\qquad\text{add 6 to both sides}\\\\2b-6+6\geq9+6-3b\\\\2b\geq15-3b\qquad\text{add}\ 3b\ \text{to both sides}\\\\2b+3b\geq15-3b+3b\\\\5b\geq15\qquad\text{divide both sides by 5}\\\\\dfrac{5b}{5}\geq\dfrac{15}{5}\\\\b\geq3$

$,\ \geq-\text{line to the right}\\-\text{o}\text{pen circle}\\\leq,\ \geq-\text{closed circle}$

4 0

2 years ago

There is a new student in class and you have been asked to teach them everything you know about coordinate planes. **Write at le

Simora [160]

Step-by-step explanation:

The coordinate plane is a two-dimension surface formed by two number lines. One number line is horizontal and is called the x-axis. The other number line is vertical number line and is called the y-axis. The two axes meet at a point called the origin. We can use the coordinate plane to graph points, lines

4 0

2 years ago