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Anuta_ua [19.1K]
2 years ago
15

What would the equation be for d=0.68t + 1.5

Mathematics
1 answer:
frozen [14]2 years ago
7 0

Answer:

Step-by-step explanation:

a)

d=0.68t + 1.5        if t time is 3 hrs

d=0.68(3) + 1.5

 = 2.04 + 1.5

d= 3.54 ft

b)

d=0.68t + 1.5     if d depth is 4 ft    solve for t

d - 1.5 = 0.68t

(d - 1.5) / 0.68 = t

(4 - 1.5) / 0.68 = t

t = 2.5/0.68

t  =  3.68 ft

c)   I needed to bury my moth.....  cat.

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Hello, I do not anderstand this at all. I have been working on radicals and stuff, but this goes way above my head. Please help.
liraira [26]

Answer:

x = \frac{5}{7}

Step-by-step explanation:

We can start simplifying this equation by expanding the parenthesis and cross multiplying.

(7^x)^4 = \frac{7^2 * 7^3}{7^{3x}} = \\\\\\7^{4x} = \frac{7^5}{7^{3x}}\\\\\\7^5 = 7^{7x}\\\\\\

The exponent 5 and 7x are equal:

\longmapstoDivide both sides by 7

5 = 7x\\\\x = \frac57

-Chetan K

6 0
2 years ago
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Use a number line to add 3 + (–5).
Sonja [21]

Answer:

3 plus -5 means you go backwards from +3 to -2 thats your answer

Step-by-step explanation:

8 0
3 years ago
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By how many degrees did the direction of the boat change
gulaghasi [49]

Answer:

The boat turned <u>39°</u> degrees when it made its first turn.

Step-by-step explanation:

The question is as following:

A boat traveled north for 28 miles, then tuned x° south west and traveled for 25 miles before stopping. When it stopped, the boat was 18 miles from its starting point.

By how many degrees did the direction of the boat change when it made its first turn? Round to the nearest degree.

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

See the attached figure which represent explanation of the problem.

The boat start from point A to point B then stopped at point C

AB = 28 miles, BC = 25 miles and AC = 18 miles.

It is required to find the angle x

By applying the cosine Rule:

AC² = AB² + BC² - 2 * AB * BC * cos x

18² = 28² + 25² - 2 * 28 * 25 * cos x

2 * 28 * 25 * cos x = 28² + 25² - 18²

1400 cos x = 1085

Cos x = 1085/1400 = 0.775

x = Cos⁻¹ 0.775 = 39.2° = 39° to the nearest degree.

So, the boat turned <u>39°</u> degrees when it made its first turn.

8 0
3 years ago
Is the graph of the line x=4 vertical or horizontal?<br><br> A: vertical<br> B: horizontal
kirill [66]

Answer:

yes

Step-by-step explanation:

3 0
2 years ago
Anyone Know This Answer ASAP ?
Luda [366]

multiply 35 by tan(42)

 this equals 31.5141

rounded to 31.51

4 0
3 years ago
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