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3 years ago

9

Please help me

1 answer:

____ [38]3 years ago

7 0

This is pretty weird: ax+ b > c is equivalent to ax + b > 0, for instance. c might always be chosen as zero, or b, or any value!

280x <= 348.76, or -280x + 348.76 >= 0,

so a = -280, b = 348.76 and c = 0 is one solution

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Please help I already asked this question but they told me b and e but it was wrong. This is my last chance pleassssse help

Sergeu [11.5K]

Answer:

C

Step-by-step explanation:

8 0

3 years ago

On a cold day, hailstones fall with a velocity of 2i − 6k m s−1 . If a cyclist travels through the hail at 10i m s−1 , what is t

Paraphin [41]

Answer:

The velocity of the hail relative to the cyclist is $V_{hc}=-8\hat{i}-6\hat{k}$

The angle at which hailstones falling relative to the cyclist is $\theta = 36.86^\circ$

Step-by-step explanation:

Given : On a cold day, hailstones fall with a velocity of $2\hat{i}-6\hat{k}\text{ m/s}$ . If a cyclist travels through the hail at $10\hat{i} \text{ m/s}$ .

To find : What is the velocity of the hail relative to the cyclist and At what angle are the hailstones falling relative to the cyclist?

Solution :

The velocity of the hailstone falls is $V_h=2\hat{i}-6\hat{k}\text{ m/s}$

The velocity of the cyclist travels through the hail is $V_c=10\hat{i} \text{ m/s}$

The velocity of the hail relative to the cyclist is given by,

$V_{hc}=V_h-V_c$

Substitute the value in the formula,

$V_{hc}=2\hat{i}-6\hat{k}-10\hat{i}$

$V_{hc}=-8\hat{i}-6\hat{k}$

So, The velocity of the hail relative to the cyclist is $V_{hc}=-8\hat{i}-6\hat{k}$

Now, The angle of hails falling relative to the cyclist is given by

$\theta = \tan^{-1}(\frac{-6}{-8})$

$\theta = \tan^{-1}(\frac{3}{4})$

$\theta = 36.86^\circ$

So, The angle at which hailstones falling relative to the cyclist is $\theta = 36.86^\circ$

4 0

4 years ago

I’m stuck on this question

Minchanka [31]

Answer:

a = 21 or -21

Step-by-step explanation:

Either a/7 = 3 meaning a = 21

<u> OR </u> a/7 = -3 meaning a = -21

4 0

2 years ago

Read 2 more answers

-6i+10i answer please

azamat

The answer is 4i to this question
Hopefully I helped

6 0

3 years ago

The equation of the line that has a slope of 2/3 and goes through the point (-6,6)

weqwewe [10]

Y=2/3x+10 - use slope intercept form

7 0

3 years ago