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Natali5045456 [20]
3 years ago
5

.

Mathematics
2 answers:
Tatiana [17]3 years ago
8 0
Multiply original price by 90%
julia-pushkina [17]3 years ago
6 0

Answer:

multiply the original price by 90%

Step-by-step explanation:

obviously you know 10% of 100 is 10 so if you are trying to take 10% off of 100 you need to multiply it by 0.90(90%)

100*0.90=90

90 dollars is the price you should be left with after buying a 100$ item when it is 10% off

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Cashews cost $6.45 a
almond37 [142]

Answer:

$20.96

Step-by-step explanation: 6.45 times three equals 19.35 plus a quarter of 6.45 equals 1.6125 which you round to 1.61. So 19.35+1.61= 20.96

8 0
3 years ago
Rewrite the equation in Ax+By=C form. use intergers for A,B,C<br><br> y=1/5-1
schepotkina [342]

Answer:

5y=-4

<em>Sure hope this helps you  :D</em>

6 0
2 years ago
A 1/17th scale model of a new hybrid car is tested in a wind tunnel at the same Reynolds number as that of the full-scale protot
Olegator [25]

Answer:

The ratio of the drag coefficients \dfrac{F_m}{F_p} is approximately 0.0002

Step-by-step explanation:

The given Reynolds number of the model = The Reynolds number of the prototype

The drag coefficient of the model, c_{m} = The drag coefficient of the prototype, c_{p}

The medium of the test for the model, \rho_m = The medium of the test for the prototype, \rho_p

The drag force is given as follows;

F_D = C_D \times A \times  \dfrac{\rho \cdot V^2}{2}

We have;

L_p = \dfrac{\rho _p}{\rho _m} \times \left(\dfrac{V_p}{V_m} \right)^2 \times \left(\dfrac{c_p}{c_m} \right)^2 \times L_m

Therefore;

\dfrac{L_p}{L_m}  = \dfrac{\rho _p}{\rho _m} \times \left(\dfrac{V_p}{V_m} \right)^2 \times \left(\dfrac{c_p}{c_m} \right)^2

\dfrac{L_p}{L_m}  =\dfrac{17}{1}

\therefore \dfrac{L_p}{L_m}  = \dfrac{17}{1} =\dfrac{\rho _p}{\rho _p} \times \left(\dfrac{V_p}{V_m} \right)^2 \times \left(\dfrac{c_p}{c_p} \right)^2 = \left(\dfrac{V_p}{V_m} \right)^2

\dfrac{17}{1} = \left(\dfrac{V_p}{V_m} \right)^2

\dfrac{F_p}{F_m}  = \dfrac{c_p \times A_p \times  \dfrac{\rho_p \cdot V_p^2}{2}}{c_m \times A_m \times  \dfrac{\rho_m \cdot V_m^2}{2}} = \dfrac{A_p}{A_m} \times \dfrac{V_p^2}{V_m^2}

\dfrac{A_m}{A_p} = \left( \dfrac{1}{17} \right)^2

\dfrac{F_p}{F_m}  = \dfrac{A_p}{A_m} \times \dfrac{V_p^2}{V_m^2}= \left (\dfrac{17}{1} \right)^2 \times \left( \left\dfrac{17}{1} \right) = 17^3

\dfrac{F_m}{F_p}  = \left( \left\dfrac{1}{17} \right)^3= (1/17)^3 ≈ 0.0002

The ratio of the drag coefficients \dfrac{F_m}{F_p} ≈ 0.0002.

5 0
3 years ago
Okay these last two are the last ones i need help on!
icang [17]
21) 5 shelves
22)385mm

8 0
3 years ago
You begin the month with $5,550 of inventory. You purchase $13,000 of stock during the month. You end the month with $2,333 of i
Zanzabum

Answer:

The correct answer is $16217

Step-by-step explanation:

You do 5550 + 13000 and get that answer and subtract 2333

3 0
3 years ago
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