3 years ago

David lives in Manhattan, where the combined state/local sales tax is 8.375 percent. David

Mathematics

1 answer:

Fynjy0 [20]3 years ago

8 0

Answer: 867$

Step-by-step explanation: (800 × .08375) + 800 = 867

You might be interested in

A pyramid has a square base with sides 100 feet long. The original height was 75 feet.

viva [34]

Step-by-step explanation:

Step 1: Find the volume of the original pyramid

$V = a^2*\frac{h}{3}$

$V=(100)^2*\frac{75}{3}$

$V=10000*25$

$V=250000$

Step 2: Find the volume of the cut off

$V=(20)^2*\frac{15}{3}$

$V = 400*5$

$V=2000$

Step 3: Find the percent that still remains

$250000-2000$

$248000$

$248000 / 250000$

$0.992*100$

$99.2$

Answer: 99.2%

8 0

3 years ago

Read 2 more answers

The numerator of a fraction is 15 less than twice its denominator. If the numerator is increased by 5 and the denominator is inc

denis-greek [22]

Answer:

7/11

Step-by-step explanation:

Let d represent the original denominator. Then the original numerator is ...

2d-15

The new numerator is ...

(2d-15) +5

and the new denominator is ...

d+7

The ratio of these is 2/3, so we have ...

$\dfrac{2d-15+5}{d+7}=\dfrac{2}{3}\\\\3(2d-10)=2(d+7) \quad\text{cross multiply}\\\\4d=44 \quad\text{add 30-2d}\\\\d=11\\\\2d-15=2(11)-15=7$

The original fraction is 7/11.

7 0

3 years ago

Find the perimeter of a regular dodecagon whose vertices are twelve equally spaced points on the unit circle.

Ivenika [448]

The vertex angle of any triangle of the dodecagon formed by radii and a side is 360/12=30º.
The half-length of the base of the triangle is sin15=0.2588 approx.
Since there are 12 sides there are 24 half-sides in the perimeter=6.2117.

3 0

3 years ago

ABCD is a rhombus. If AC = 24 and BD = 18, what is the perimeter of ABCD?

amm1812

Answer:

Step-by-step explanation:

A rhombus has parallel sides so it's simply

24+24+18+18=84

6 0

3 years ago

How are conversion of units and scientific notation relate to each other?

agasfer [191]

They both use powers

5 0

3 years ago