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raketka [301]
3 years ago
7

30 POINTS PLUS BRAINLIEST. ANSWER ALL QUESTIONS IN DETAILS,FORMULA AND STEP BY STEP.EXPLANATION FOR EACH ONE. NEEDS TO BE DONE I

N 1HR OR LESS. ALL TROLL ANSWERS WILL BE REPORTED​

Mathematics
1 answer:
Brut [27]3 years ago
8 0

Answer: I think the answers below are all correct! :)

Step-by-step explanation: --> (that sign means I simplified the equation)

9-7r=-5 --> (9+5)-7r=0 --> 14-7r=0 --> 14=7r --> r=2

6x-5=4x+9 --> 6x=4x+(9+5) --> 6x=4x+14 --> 6x-4x=14 --> 2x=14 --> x=7

3(2d-1)=7d --> *multiply the parenthesis* 6d-3=7d --> -3=7d-6d -->d=-3

2(p-3)=4(3p+1) --> *multiply the parenthesis* 2p-6=12p+4 --> -10p=10 --> p=-1

___________________________________________________________

Don't know how to do the others below the boxes.

Good Luck!

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Equation through the point (5,9) with a slope of -4
hoa [83]
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To solve this, you need to know the y-intercept. 
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2. 9+-4(5)+b
3. 9=-20+b
4. b=9+20
5. b=29
6. Substitute into y=-4x+b

4 0
3 years ago
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An object is thrown upward from the top of a 192 ft building with an initial velocity of 64 feet
Airida [17]

Answer:

t=6

Step-by-step explanation:

ground height = 0

(are you sure your formula is correct? isn't it - 16t²?)

if h=16t² +64t+192 is true then

16t² +64t+192 = 0

t² + 4t + 12 = 0

t = (-4 ± √(4² - 4*12)) / 2*1 = (-4 ± √-32) / 2 = -2 ± 2√-2

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if it is h= - 16t² +64t+192

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7 0
2 years ago
suppose that the number of bacteria in a certain population increases according to a continuous exponential growth model. A samp
Tema [17]

Answer:

3.33% per hour

Step-by-step explanation:

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8 0
3 years ago
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Answer:

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xz_007 [3.2K]

Answer:

E

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3 years ago
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