Please, please, please, please help

Mathematics

1 answer:

Alexeev081 [22]3 years ago

6 0

Answer:

Step-by-step explanation:

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Converting volume to gallons

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3 years ago

A tangent from point P to a circle of radius 4 cm is 10 cm long. Find: a the distance of P from the centre of the circle <br

d1i1m1o1n [39]

Answer:

see explanation

Step-by-step explanation:

The tangent and the radius at the point of contact form a right angle

Using Pythagoras' identity on the right triangle formed.

Let x be the distance from the centre to P, then

x² = 4² + 10² = 16 + 100 = 116 ( take the square root of both sides )

x = $\sqrt{116}$ ≈ 10.77 cm (to 2 dec. places )

let the required angle be Θ, then

Using the sine or cosine ratio in the right triangle.

cosΘ = $\frac{adjacent}{hypotenuse}$ = $\frac{10}{\sqrt{116} }$

Θ = $cos^{-1}$ ( $\frac{10}{\sqrt{116} }$ ) ≈ 21.8°

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3 years ago

invent three meaningful algebatric expressions of your own from the list of variables and enter them into the table below.write

Mars2501 [29]

Answer:

Step-by-step explanation:

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2 years ago

Omar wants to purchase a bike helmet for 22.55 and a bike for 134.45.

noname [10]

Answer:

$169.96 dollars

Step-by-step explanation:

Given the following questions:

8.25% of 22.55 and 134.45

In order to find the answer, we will have to add the initial costs of the items together, then we will calculate using the formula for percentages to find the tax rate.

$22.55+134.45=157$
$157$

Calculate the percentage:
 $\frac{p\times c}{100}$
$\frac{8.25\times157}{100} =8.25\times157=1295.25\div100=12.9525$
$=12.9525$
$12.9525$
$2 < 5$
$=12.96$

Add the sales tax:
$157+12.96=169.96$
$=169.96$

Which means the two items along with an 8.25% sales tax costs "$169.96 dollars."

Hope this helps.