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3 years ago

Help help help meeee please:(

Mathematics

1 answer:

Mrrafil [7]3 years ago

4 0

Answer:

1/3

Step-by-step explanation

(1/3)2x(1/3)-1 _ (1/3) 2-1 _ subtract 2-1 _ (1/3)1 take the one away bc any expression raised to the power of one equals itself

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40% of collage students scored more than 70% on a math test. 120 students scored below that. How many total students took the ma

monitta

The answer to your question is 200.
100%-40%=60%
60%=120 students
60%÷3=20%
120÷3=40
20%=40
20%X5=100%
40X5=200

3 0

3 years ago

Match the provided functions to a graphed function with the same zero(s).

satela [25.4K]

Answer:

1st:

${x}^{3} - 3 { x}^{2} - 3$

2nd:

${x}^{2} - 5x + 4$

3rd:

$- 4x - 8$

Step-by-step explanation:

Graph all of them and see which ones cross the x- axis at the same points.

8 0

3 years ago

Plese help 40 pts and brainliest if correct

jasenka [17]

Try B, but note I’m not sure if right.

3 0

2 years ago

For what values of θ is sinθ < cosθ when 0 ≤ θ < π ?

zysi [14]

<h3>Answer: $0 \le \theta < \frac{\pi}{4}$ </h3>

=========================================================

How to get this answer:

Use the unit circle to note that $\sin\theta = \cos\theta = \frac{\sqrt{2}}{2}$ when $\theta = \frac{\pi}{4}$ (aka 45 degrees)

Beyond this point, cosine is smaller than sine. This means that anything from 0 to pi/4 will have sine be smaller than cosine. It might help to graph y = sin(x) and y = cos(x) on the interval from x = 0 to x = pi.

The two curves y = sin(x) and y = cos(x) intersect at the point $\left(\frac{\pi}{4}, \frac{\sqrt{2}}{2}\right)$

-------------------------------

Here's a more detailed picture of whats going on.

$\sin \theta < \cos \theta\\\\\sin \theta < \sqrt{1-\sin^2\theta}\\\\\sin^2 \theta < 1-\sin^2\theta \\\\2\sin^2 \theta < 1\\\\\sin^2 \theta < \frac{1}{2}\\\\\sin \theta < \sqrt{\frac{1}{2}}\\\\\sin \theta < \frac{1}{\sqrt{2}}\\\\\sin \theta < \frac{\sqrt{2}}{2}\\\\\theta < \arcsin\left(\frac{\sqrt{2}}{2}\right)\\\\\theta < \frac{\pi}{4}\\\\$

Intersect the intervals $0 \le \theta < \pi$ and $\theta < \frac{\pi}{4}$ and you'll end up with the final answer $0 \le \theta < \frac{\pi}{4}$

4 0

3 years ago

The table shows the ratio between the number of packets and the number of seeds of a certain plant contained in them:

vichka [17]

Answer:

the thired grap.

Step-by-step explanation:

it is for the test i toke

8 0

3 years ago