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34kurt
3 years ago
9

A $129.50 stereo is discounted 40%. The next month, the sale price is discounted 60%. is the stereo now "free"? If not, what is

the sale price?
Mathematics
2 answers:
Nataly [62]3 years ago
8 0
Discounted 40% means u pay 60%
0.60(129.50) = 77.70....1st discounted price

discounted 60% means u r paying 40%
0.40(77.70) = 31.08 <=== sale price
Paraphin [41]3 years ago
6 0
51.80 $ that is the answer
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Fynjy0 [20]
X - the number

3x - 7 = -4    |add 7 to both sides

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x = 1
7 0
3 years ago
Find the missing parts of the triangle. Round to the nearest tenth when necessary or to the nearest minute as appropriate.
Katena32 [7]

Answer:

  • A) A = 27.3°, B = 56.1°, C = 96.6°

Step-by-step explanation:

<u>Use the Law of Cosines:</u>

  • A = arccos [(b² + c² - a²)/(2bc)] = arccos [(13.2² + 15.8² - 7.3²)/(2*13.2*15.8)] = 27.3°
  • B = arccos [(a² + c² - b²)/(2ac)] = arccos [(7.3² + 15.8² - 13.2²)/(2*7.3*15.8)] = 56.1°
  • C = 180° - (A + B) = 180° - (27.3° + 56.1°) = 96.6°

Correct choice is A.

3 0
3 years ago
The most recent census for a city indicated that there were 919,716 residents. The population of the city is expected to increas
OLEGan [10]

Answer:

1,474,951.

Step-by-step explanation:

Given a population that increases by a constant percentage, we can model the population's growth using the exponential model.

P(t)=P_o(1+r)^t,$ where \left\{\begin{array}{lll}P_o=$Initial Population\\r$=Growth rate\\$t=time (in years)\end{array}\right\\P_o=919,716\\r=3.7\%=0.037\\$t=13 years

Therefore, the population of the city in 13 years time will be:

P(t)=919,716(1+0.037)^{13}\\\\=919,716(1.037)^{13}\\\\=1,474,950.9\\\\\approx 1,474,951

The population be at that time will be approximately 1,474,951.

3 0
3 years ago
What is x/-4 + 7 = 9​
lawyer [7]

Answer:

x = 8

Step-by-step explanation:

Solve for  x  by simplifying both sides of the equation, then isolating the variable.

x  = 8

Hope it helps!

7 0
3 years ago
Are 7xy and 2yx like terms
Vanyuwa [196]

Answer: no, 7xy and 2xy are not like terms

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3 years ago
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