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2 years ago

PLEASE ANSWER QUICK!!URGENT!

Mathematics

1 answer:

denis-greek [22]2 years ago

7 0

Answer:

0.22y * 0.06

Step-by-step explanation:

its the discount times the original for how much he paid, then time sales tax for total price

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What is the value of x 2 - 14 when x = 9?

Nonamiya [84]

Answer:

Step-by-step explanation:

9(2) = 18

18-14=4

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2 years ago

Read 2 more answers

Find the area each sector. Do Not round. Part 1. NO LINKS!!

sladkih [1.3K]

Answer:

$\textsf{Area of a sector (angle in degrees)}=\dfrac{\theta}{360 \textdegree}\pi r^2$

$\textsf{Area of a sector (angle in radians)}=\dfrac12r^2\theta$

17) Given:

$\theta$ = 240°
r = 16 ft

$\textsf{Area of a sector}=\dfrac{240}{360}\pi \cdot 16^2=\dfrac{512}{3}\pi \textsf{ ft}^2$

19) Given:

$\theta=\dfrac{3 \pi}{2}$
r = 14 cm

$\textsf{Area of a sector}=\dfrac12\cdot14^2 \cdot \dfrac{3\pi}{2}=147 \pi \textsf{ cm}^2$

21) Given:

$\theta=\dfrac{ \pi}{2}$
r = 10 mi

$\textsf{Area of a sector}=\dfrac12\cdot10^2 \cdot \dfrac{\pi}{2}=25 \pi \textsf{ mi}^2$

23) Given:

$\theta$ = 60°
r = 7 km

$\textsf{Area of a sector}=\dfrac{60}{360}\pi \cdot 7^2=\dfrac{49}{6}\pi \textsf{ km}^2$

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1 year ago

2^24 x 3^2 x 1 hhhhhhhhhhhhhhhhhh

AysviL [449]

Answer:

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2 years ago

Prove cos a = 5/13 pls solve it and no link pls..........

Scorpion4ik [409]

Answer : The demonstration is below :)

Step-by-step explanation :

We use Pythagoras' theorem :

In the triangle ABC we have :

AB² = AC² - BC² = 15² - 9² = 144 = 12²

In the triangle ABD we have :

DB² = AD² - AB² = 13² - 12² = 5²

cos(a) = BD/AD = 5/13

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2 years ago

How to express -8+4-2+1 in sigma notation

dlinn [17]

It's pretty clear what the pattern is - 2^(k-1) * (-1)^(k-1) would work backwards, but we have to work forwards to get lower in this case, so we could start at -3 (as long as we put the k-1 in absolute value to make sure it's not 1/8), so we could write it as ∑ (k=1, goes to 4) 2^(|k-4|)*(-1)^(k-4)

It doesn't matter for k-4 because 1/-1 and 1/1 are the same thing as -1 and 1 respectively

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3 years ago