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3 years ago

7

3 - 4x / 1 + 5x = 1/ 2 + 3x

1 answer:

skelet666 [1.2K]3 years ago

5 0

-0.8 is the answer i came up with

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-2b^2-18b^2<br> Help me. Plz

satela [25.4K]

Answer:

${ \tt{ - {2b}^{2} - 18 {b}^{2} }} \\ = - {20 {b}^{2}}$

7 0

3 years ago

Give a real world example of a rate for a unit rate of 40 miles per hour

Zina [86]

A person drives 500 miles in 5 hours.

8 0

4 years ago

Im giving 20 points, can someone help?

soldi70 [24.7K]

Answer:

C

Step-by-step explanation:

∠1 = 3x + 18 {Vertically opposite angles}

∠1 + 28° = 90

3x + 18 + 28 = 90

3x + 46 = 90

3x = 90 - 46

3x = 44

x = 44/3

$x = 14 \dfrac{2}{3}$

8 0

2 years ago

PLEASE HELP ME!!!

VashaNatasha [74]

Answer:

$350 * D \geq 1400$

$D\ge 4$

This means that the family must travel for at least 4 days.

<em></em>

Step-by-step explanation:

Given

$Rate = 350\ miles\ daily$

$Distance = 1400\ miles\ (atleast)$

Required

Determine and solve the inequality

The number of days is represented with D

So:

On any D number of days, the family would have covered a distance of 350 * D miles

If the total distance is at least 1400, then the inequality is:

$350 * D \geq 1400$

[The term "At least" is used to represent <em>greater than or equal to</em>]

$350 * D \geq 1400$

Divide through by 350

$\frac{350 * D}{350} \ge \frac{1400}{350}$

$D \ge \frac{1400}{350}$

$D\ge 4$

<em>This means that the family must travel for at least 4 days.</em>

5 0

3 years ago

Find the rectangular coordinates of the point with the polar coordinates ordered pair 7 comma 2 pi divided by 3.

Morgarella [4.7K]

Answer:

$\left(-\dfrac{7}{2},\dfrac{7\sqrt{3}}{2}\right)$ .

Step-by-step explanation:

The given point is

$\left(7,\dfrac{2\pi}{3}\right)$

We need to find the rectangular coordinates of the given point.

If a polar coordinate is $(r,\theta)$ , then

$x=r\cos theta$

$y=r\sin theta$

In the given point $\left(7,\dfrac{2\pi}{3}\right)$ ,

$r=7,\theta=\dfrac{2\pi}{3}$

Now,

$x=7\cos \dfrac{2\pi}{3}$

$x=7\cos \left(\pi-\dfrac{\pi}{3}\right)$

$x=-7\cos \left(\dfrac{\pi}{3}\right)$

$x=-7\left(\dfrac{1}{2}\right)$

$x=-\dfrac{7}{2}$

and,

$y=7\sin \dfrac{2\pi}{3}$

$y=7\sin \left(\pi-\dfrac{\pi}{3}\right)$

$y=7\sin \left(\dfrac{\pi}{3}\right)$

$y=7\left(\dfrac{\sqrt{3}}{2}\right)$

$y=\dfrac{7\sqrt{3}}{2}$

Therefore, the required point is $\left(-\dfrac{7}{2},\dfrac{7\sqrt{3}}{2}\right)$ .

3 0

3 years ago