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3 years ago

The sales tax in your city is %8.8, point, percent, and an item costs \$63$ before tax.

Mathematics

1 answer:

Flura [38]3 years ago

7 0

Answer:

$68.54

Step-by-step explanation:

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-34-r=-7(8r-3) what is the work and answer

NeX [460]

-34-r=-7(8r-3)
- 34 - r = - 56r + 21
- r + 56r = 21 + 34
55r = 55
r = 55/55
r = 1

5 0

3 years ago

Regular triangular pyramid has 6 cm long base edge and slant height k=9 cm. Find the lateral area of the pyramid.

gregori [183]

Answer:

81 cm²

Step-by-step explanation:

Since, the lateral face of a triangular pyramid is a triangle,

Given,

The base edge or the base of one lateral face of pyramid, a = 6 cm,

And, the slant height or the height of the face, k = 9 cm,

Thus, the area of one lateral face of the pyramid,

$A=\frac{1}{2}\times a\times k$

$=\frac{1}{2}\times 6\times 9$

$=\frac{54}{2}$

$=27\text{ square cm}$

We know that, a Regular triangular pyramid has 3 lateral faces,

Hence, the total lateral area of the pyramid,

$L.A.=3\times\text{ The area of one lateral face}$

$=3\times 27$

$=81\text{ square cm}$

5 0

2 years ago

Read 2 more answers

Solve for x: 5x/7 - 5 = 50

katrin [286]

The answer is x =77 hope i help you

7 0

3 years ago

Need help if anybody can help.

Darina [25.2K]

Answer:

46.5

Step-by-step explanation:

Of all straight angles have 180 degrees in them.

So, to find x we need to form this equation:

x + 65 + x - 22 = 180

2x + 43 = 180

2x = 180-43

2x = 137

68.5 degrees = x

68.5-22 = 46.5 degrees.

m<CBD = 46.5 degrees.

m<GBF = also 46.5 degrees because it is a vertical angle to <46.5 degrees.

8 0

2 years ago

Cos theta / sec theta -1 - sin theta / 1+cos theta = 2 cot theta

joja [24]

Step-by-step explanation:

<h3>Explanation is in the attachment </h3>

Hope it is helpful to you

3 0

2 years ago