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const2013 [10]
3 years ago
8

10 + 7x = -8 ( x -7)

Mathematics
1 answer:
tresset_1 [31]3 years ago
4 0

10+7x = -8x+56

15x=46

x=46/15

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Steve's doctor has advised him to take protein supplements. He bought two brands, Brand A and Brand B. The table gives the amoun
BlackZzzverrR [31]
Here s the question this is the doc i put it on please help
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6 0
3 years ago
Population Growth The population P (in thousands) of Oriando,Florida from 1980 through 2009 can be modeled by p = 130e0.0205t,wh
svetoff [14.1K]

Answer: a) 236,000.

b) 2021

Step-by-step explanation:

Given : Population Growth The population P (in thousands) of Oriando,Florida from 1980 through 2009 can be modeled by p = 130e^{0.0205t}    (1)

where t = 0 corresponds to 1980.

Then , for 2009

t= 2009-1980=29

a. ⇒The population of Phoenix in 2009 =  p = 130e^{0.0205(29)}

p = 130e^{0.5945}

p =130(1.81212465608)=235.57620529\approx236

Hence, the population of Orlando in 2009 was about 236,000.

b) Substitute p= 300 in (1) , we get

300 = 130e^{0.0205t}

2.3077= e^{0.0205t} (Divide both sides by 130)

Taking Natural log on both sides,

\ln(2.3077) = 0.0205t\\\\\Rightarrow\ t=\dfrac{\ln(2.3077)}{0.0205}

t=\dfrac{0.836251357528}{0.0205}=40.7927491477\approx41

Hence, The year Orlando will have a population of 300,000 =1980+41 =2021

6 0
3 years ago
Without graphing or solving, determine the number of solutions of the system.
maw [93]

Answer:

Step-by-step explanation:

2)infinetly many solutions

beacuse y=8x-2  and y-8x=-2 are the same thing without any limitation

3 0
3 years ago
1.Evaluate: 144/16<br><br> 2.Evaluate: 13.5 x 17<br><br> PLSSSS HELP
IgorLugansk [536]

Answer:

1. 144 : 16 = 9

2. 13.5 x 17 = 229.5

3 0
3 years ago
Please solve for x. I need this answered.
spin [16.1K]

2.5x - 3 + 2x = 1.75x - 1.25x + 13

4.5x - 3 = 0.50x + 13

4.0x = 16

x = 4

Answer: 4

2. We'll assume those xs are in the numerator

(3/7)x - 1/4 + (3/7)x = (9/7)x - (3/7)x + 3/4 - 1

(6/7)x - 1/4 = (6/7)x  - 1/4

0 = 0

That's always true.

Answer: Any x is a solution.

8 0
3 years ago
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