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trasher [3.6K]
2 years ago
14

Write the following using algebraic notations all i think of a number half it and takeaway 4

Mathematics
1 answer:
Natali5045456 [20]2 years ago
4 0

Answer:

y = 1/2x - 4

Step-by-step explanation:

Let the number be represented by x, and the solution be y

Therefore:

1/2x - 4 = y

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Radius OA of circle O has a slope of 2.5. What is the slope of the line tangent to circle O to point A?
mixer [17]
The tangent at A is perpendicular to OA, so has a slope that is the negative reciprocal of that of the radius: -1/2.5 = -2/5.
5 0
2 years ago
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The population of a colony of mosquitoes obeys the law of uninhibited growth. If there are 1000 mosquitoes initially and there a
Anettt [7]

Answer:

1) The size of the colony after 4 ​days is 6553 mosquitoes

2) After t = 4.9\ days

Step-by-step explanation:

To answer this question you must use the growth formula

N = N_0e ^ {kt}

Where

N_0 is the initial population of mosquitoes = 1000

t is the time in days

k is the growth rate

N is the population according to the number of days

We know that when t = 1 and N_0=1000 then N = 1600

Then we use these values to find k.

1600 = 1000e ^{k(1)}\\\\\frac{1600}{1000} = e ^ k\\\\ln(\frac{1600}{1000}) = k\\\\k = 0.47

Now that we know k we can find the size of the colony after 4 days.

N = 1000e ^ {0.47(4)}\\\\N = 6553\ mosquitoes

To know how long it should take for the population to reach 10,000 mosquitoes we must do N = 10000 and solve for t.

10000 = 1000e ^ {0.47t}\\\\10 = e ^ {0.47t}\\\\ln(10) = 0.47t\\\\t = \frac{ln(10)}{0.47}\\\\t = 4.9\ days

6 0
2 years ago
7. Holly plays pool on Sundays. She pays $6.50 for admission and $3.50 for
ollegr [7]

Answer:

3.50x+6.50=y

Step-by-step explanation:

6 0
2 years ago
Check all like terms to 32xy<br> 0 32x<br> Oxy<br> 0 32x<br> O 32y<br> 10xy
Troyanec [42]

Answer:

10xy (option 5)

Step-by-step explanation:

it contains both x and y pronumerals

6 0
3 years ago
Help please thank you!
Liula [17]
97 rounds up to 100
78 rounds up to 80
100x80= 8,000
estimate=8,000

97x78=7,566
product=7,566
7 0
2 years ago
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