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3 years ago

The relationship between speed, distance and time can be calculated with

Mathematics

1 answer:

Studentka2010 [4]3 years ago

8 0

Answer:

0.4 second

Step-by-step explanation:

The formula D = st is the formula that can be used to substitute in the values (which is already in the problem).

If the speed is 175 meters a second and the distance is 70 meters, than that means 70 = 175t.

(I substituted 70 for distance, or D, and 175 for speed, or s).

Divide 175 on both sides in order to isolate the variable (t), which is 0.4 second.

The time taken for the hurricane to reach the shore would be 0.4 second.

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Help me It’s due tomorrow and I can’t figure it out!!!

yuradex [85]

A.) 30+10=40. So, 90-40=50. Your answer is 50 degrees.
B.) 45+4=49. So, 90-49=41. Your answer is 41 degrees.
C.) 8 to the square root of 2+45=56.31. So, 90-56.31=33.69. Your answer is 33.69 or 33.7 if you need to round.
D.) One angle is 30 degrees, and another angle is 60 degrees. Your other angle is 90 degrees.
E.) 60+6=66. 90-66=24. Your answer is 24 degrees.
F.) 45+6=51. 90-51=39. Your answer is 39 degrees.

4 0

3 years ago

Please help me thanks!

Sliva [168]

Answer: See the screenshot below.

Explanation:

We'll be using these trig functions

sine = opposite/hypotenuse
cosine = adjacent/hypotenuse
tangent = opposite/adjacent

The inverse of those help us find the angle. Notation like arcsine is the same as inverse sine denoted as $\sin^{-1}$ on many calculators.

The decimal results are approximate.

7 0

2 years ago

25x - 20y= -100<br><br> x-intercept:__________<br> y-intercept:__________

ICE Princess25 [194]

X = (-4, 0)

Y = (0, 5)

8 0

3 years ago

The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviation σ = 25 hours. A random sam

irina [24]

Answer: a) (1008.34,1019.658) b) (1009.24,1018.76)

Step-by-step explanation:

Since we have given that

n = 75

mean = 1014 hours

Standard deviation = 25 hours

At 95% two sided , z = 1.96

So, confidence interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.96\dfrac{25}{\sqrt{75}}\\\\=1014\pm 5.658\\\\=(1014-5.658,1014+5.658)\\\\=(1008.34,1019.658)$

(b) Construct a 95% lower confidence bound on the mean life.

z = 1.65

So, confidence interval would be

$\bar{x}\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.65\times \dfrac{25}{\sqrt{75}}\\\\=1014\pm 4.76\\\\=(1014-4.76,1014+4.76)\\\\=(1009.24,1018.76)$

Hence, a) (1008.34,1019.658) b) (1009.24,1018.76)

4 0

3 years ago

25 + 14 = blank + 25

sleet_krkn [62]

Answer:

Step-by-step explanation:

25 + 14 = 14 + 25

39 = 39

6 0

3 years ago