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bazaltina [42]
3 years ago
14

Money off coupons has been circulated to 300 house holds.only 2/5m of these were redeemed (used) in the local supermarket to get

a free shampoo.what fraction of the coupons were unused?
Mathematics
1 answer:
Crank3 years ago
8 0
3/5 of 300 is 180. 180 coupons were unused.
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Ethan is 1.85 meters tall. At 10 a.m., he measures the length of a tree's shadow to be 28.45 meters. He stands 24.3 meters away
ser-zykov [4K]

Answer:

Height is 12.68 m

Step-by-step explanation:

• Consider triangle formed by Ethan's head, Ethan's feet and shadow's tip

  • opposite = 1.85 m
  • hypotenuse = x
  • adjacent = (28.45 - 24.3) = 4.15 m

• From pythogras theorem:

{ \rm{a {}^{2}  +  {b}^{2} =  {c}^{2}  }} \\  { \rm{ {4.15}^{2}  +  {1.85}^{2}  =  {x}^{2} }} \\ { \rm{ {x}^{2}  = 20.645}} \\ { \rm{x = 4.54}} \\ { \rm{hypotenuse = 4.54 \: m}}

• From scale factors:

{ \rm{ \frac{28.45}{4.15}  =  \frac{h}{1.85} }} \\  \\ { \rm{h =  \frac{1.85 \times 28.45}{4.15} }} \\  \\ h = 12.68 \: m

4 0
2 years ago
Read 2 more answers
The bank discount of an $18,000 non interest bearing, simple discount, 8% 90 day note is?
Anna11 [10]

Answer- Amount of discount the bank will be proving is = $360

Solution-

We know the formula for simple interest, i = Prt

Where i = interest, P = capital, r = rate of interest, t = time period

Substituting the given values,

(Time is the fraction of a year that is considered to have 360 days)

i = \frac{(18,0000)(08)(90)}{360} = 360

⇒ i = $360


8 0
3 years ago
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Luba_88 [7]

Answer:

B

Step-by-step explanation:

The area (A) of a parallelogram is calculated using the formula

A = base × perpendicular height

base = DC = 4 and height = DB = 5, thus

A = 4 × 5 = 20 units² → B

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Step-by-step explanation:

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viktelen [127]

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Step-by-step explanation:

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