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3 years ago

Write 4.257x10^-7 in standard form.

Mathematics

2 answers:

kumpel [21]3 years ago

6 0

The answer would be C.

il63 [147K]3 years ago

6 0

Hello!

As we are multiplying by 10^-7, we will move the decimal to the right 7 times. This means we will have 6 0's before our number after the decimal.

0.0000004257

It appears that you switched around the 4 and the 2, but we know what you were referring too.

Therefore, our answer is D.

I hope this helps!

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Write the domain as an inequality & Write the range as an inequality

vesna_86 [32]

Answer:

D = x < — 4

R = y < — 3

Step-by-step explanation:

If any questions remains, ask in the comment <3

7 0

2 years ago

CAN SOMEONE PLEASE HELP ME SOLVE THIS I WILL GIVE U BRAINIEST PLEASE AND THANK YOU.!

Arisa [49]

Answer:

Step-by-step explanation:

SIMPLE 30 X 30

8 0

2 years ago

Urgent！！！！pleasehelp

gavmur [86]

Answer:

y + 2 = -2(x - 3)^2

Step-by-step explanation:

We can see immediately that the vertex is at (3, -2).

The vertex form of the equation of a parabola is

y - k = a(x - h)^2.

If the parabola opened upward, the equation would be y + 2 = 2(x - 3)^2. But seeing that this particular parabola opens downward, the equation is

y + 2 = -2(x - 3)^2.

Check: Does the point (2, -4) satisfy this equation?

-4 + 2 = -2(2 - 3)^2 becomes -2 = -2(-1)^2, which is true.

3 0

3 years ago

I'm completely lost. I don't know what to do at all.

timama [110]

If you are given 2 points, it's easy to find the slope.
(8, -6)
(3, -2)

slope = (y₂ - y₁) / (x₂ - x₁)
slope = (-2 + 6) / (3 - 8)
slope = (4) / (-5)
m = 4/-5 or -5/4 or

3 0

3 years ago

Find the angle [OA] makes with the positive x-axis if the x-coordinate of the point A on the unit circle is 0.222

EastWind [94]

By using the concepts of unit circle and trigonometric functions, we find that the angle OA, whose x-coordinate is 0.222, has a measure of approximately 77.173°.

<h3>How to find an angle in an unit circle</h3>

Unit circles are circles with radius of 1 and centered at the origin of a Cartesian plane, which are used to determine angles and trigonometric functions related to them. If we use rectangular coordinate system and the definition of the tangent function, we find that the angle OA is equal to:

$\tan \theta = \frac{\sqrt{1 - x^{2}}}{x}$

$\tan \theta = \frac{\sqrt{1-0.222^{2}}}{0.222}$

tan θ ≈ 77.173°

By using the concepts of unit circle and trigonometric functions, we find that the angle OA, whose x-coordinate is 0.222, has a measure of approximately 77.173°.

To learn more on unit circles: brainly.com/question/12100731

#SPJ1

4 0

1 year ago