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alexandr402 [8]
3 years ago
8

Sandals are on sale for 30% off. The original price of one pair of sandals is $30

Mathematics
1 answer:
suter [353]3 years ago
7 0

Answer:

$21

Step-by-step explanation:

Original price of sandal = $30

Discount = 30%

What is the new cost of sandals after the discount?

Amount of discount = discount × original price

= 30% × $30

= 30 / 100 × 30

= 9

Amount of discount = $9

New price of sandal = Old price - amount of discount

= $30 - $9

= $21

New price of sandal = $21

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For each explicitly-defined sequence below, write the first few terms. Then use the terms to write a recursive equation.
julia-pushkina [17]

Answer:

Step-by-step explanation:

Problem A

t(1) = 2(1) + 5

t(2) = 2*2 + 5 = 9

t(3) = 2*3 + 5 = 11

t(4) = 2*4 + 5 = 13

So this is the explicit result. Now try it recursively.

t_3 = t_2 + 2

t_3 = 9 + 2

t_3 = 11          which is just what it should do.

t_n = t_(n - 1) + 2

Problem B

t(1) = 3 * 1/2

t(1) = 3/2

t(2) = 3*(1/2)^2

t(2) = 3 * 1/4

t(2) = 3/4

t(3) = 3*(1/2)^3

t(3) = 3 * 1/8

t(3) = 3/8

t(4) = 3 (1/2)^4

t(4) = 3 (1/16)

t(4) = 3/16

So in general

t_n = t_n-1 * 1/2

For example t(5)

t_5 = t_4 * 1/2

t_5 = 3 /16 * 1/2 = 3/32

6 0
3 years ago
An automobile with 0.279 m radius tires travels 65000 km before wearing them out. How many revolutions do the tires make, neglec
bija089 [108]

Answer:

Revolutions=37079108.61 rev

Step-by-step explanation:

First if all we have to make the units same to calculate the revolutions

Since distance gis gien in km and radius is given in m we will covert distance to m first.

Distance =S=65000km

Distance=S=65000km*1000m/km

Distance = S= 65000000m

Formula:

S=rθ

where

S is the distance

r is the radius

θ is the revolution in radian

θ=S/r

θ=65000000/0.279

θ=232974910.4 rad

Revolutions=θ/2π

Revolutions=232974910.4/2π

Revolutions=37079108.61 rev

7 0
3 years ago
R = 13.1 km., d = ? , C
rodikova [14]
R mean radius and d mean diameter so C mean circumference ? please clearifie these - thank you 
5 0
3 years ago
HELP PLEASE ASAP 30 PTS I’ll MARK YOU BRAINLIEST
tester [92]

Answer:

x=50 ∠BCX=65

Step-by-step explanation:

The angles is a triangle add up to 180 so

70+45+∠BCX=180 so

115+∠BCX=180 (subtract 115 from both sides)

∠BCX=65

A line adds up to 180

so 2x+15+65=180

so 2x+80=180 (subtract 80 from both sides)

2x=100 (divide by 2)

x=50

8 0
3 years ago
Jane had 2/3 of a meter of ribbon. She used 1/4 of a meter of ribbon to decorate a card. How much ribbon did she have left after
Vilka [71]
2/3 - 1/4 =
8/12 - 3/12 =
5/12 <==
7 0
3 years ago
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