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3 years ago

If 45% of a bill is fo labour what is the total bill if the labour cost is 135$

Mathematics

1 answer:

Tomtit [17]3 years ago

7 0

Answer:

the answer is 283.5

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The age of the Hawaiian islands gets older as you move from east to west. If the half-life of K-40 is 1.3 billion years, approxi

Mumz [18]

Answer:

$t \approx 750550.12\,yr$

Step-by-step explanation:

The time constant of the isotope is:

$\tau = \frac{1.3\times 10^{9}\,yr}{\ln 2}$

$\tau \approx 1.876 \times 10^{9}\,yr$

The decay of the isotope is described by the following model:

$\frac{m}{m_{o}} = e^{-\frac{t}{\tau} }$

Now, the time is cleared in the equation:

$t = -\tau \cdot \ln \frac{m}{m_{o}}$

$t = - (1.876\times 10^{9}\,yr)\cdot \ln 0.9996$

$t \approx 750550.12\,yr$

5 0

3 years ago

FREE BRAINLIEST & 50 points bc im nice <3

Ostrovityanka [42]

YAY HAHA!!! YAY YAY YAY

6 0

2 years ago

Read 2 more answers

Find the GCF of 6x^7 and 15x^3?

LekaFEV [45]

I believe the answer is 3x^3

since 3 is the greatest common factor for the whole number and both have at least x to the third

5 0

3 years ago

A skier is on the top of a 350 meter tall mountain looking down at a tree. The direct path from the tree to the skier is 505 met

denpristay [2]

Answer:

$43.87^{\circ}$

Step-by-step explanation:

We are given that

Height of mountain=350 m

Distance from the tree to the skier=505 m

We have to find the angle of depression from where the skier is standing to the base of the tree.

In triangle ABC

$\frac{AB}{AC}=sin\theta$

By using the formula

$\frac{Perpendicular\;side}{Hypotenuse}=sin\theta$

$\frac{350}{505}=sin\theta$

$sin^{-1}(\frac{350}{505})=\theta$

$\theta=43.87^{\circ}$

Hence, the angle of depression from where the skier is standing to the base of the tree= $43.87^{\circ}$

6 0

3 years ago

Plz plz plz plz plz plz find x

Nuetrik [128]

Answer:

36 i think

Step-by-step explanation:

6 0

2 years ago