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Tcecarenko [31]
3 years ago
15

Please help asap ill give u brainliest too please

Mathematics
2 answers:
Alex_Xolod [135]3 years ago
5 0

Step-by-step explanation:

The notation a ≥ b or a ⩾ b means that a is greater than or equal to b,

We have your question that asks to graph y + 8 ≥ 9 which means the same as y+ 8 ⩾ 9.

We see y as zero we graph an open dot at zero and draw a line to 8.49, here this means it is equal and and not greater than 8 as they are referring to whole numbers 8 and 9. we then close the dot at 8.49, and keep the number under 8.5. this way it is consistent with the equality they state for number 8.  

if the notation was facing the other way it would all point as a decrease potentially and 7.5 would be closed.

IF it was a > or < then it would mean strict greater or less, never equal to it becomes confirmation we look for being of larger or of greater.

Mumz [18]3 years ago
3 0

Answer: the solution is 1

Step-by-step explanation:

you subtract the 8 from 9 so you can get  the variable, y, by itself.

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What is 2 1/4 as a fraction
arlik [135]
I don’t know if that 2 and 1/4 or 21/4 so I’ll do both.
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6 0
3 years ago
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Water whose temperature is at 100∘C is left to cool in a room where the temperature is 60∘C. After 3 minutes, the water temperat
Tju [1.3M]

Answer:

21.68 minutes ≈ 21.7 minutes

Step-by-step explanation:

Given:

T=60+40e^{kt}

Initial temperature

T = 100°C

Final temperature = 60°C

Temperature after (t = 3 minutes) = 90°C

Now,

using the given equation

T=60+40e^{kt}

at T = 90°C and  t = 3 minutes

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30=40e^{3k}

or

e^{3k}=\frac{3}{4}

taking the natural log both sides, we get

3k = \ln(\frac{3}{4})

or

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or

k = -0.09589

Therefore,

substituting k in 1 for time at temperature, T = 65°C

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or

5=40e^{( -0.09589)t}

or

e^{( -0.09589)t}=\frac{5}{40}

or

e^{( -0.09589)t}=0.125

taking the natural log both the sides, we get

( -0.09589)t = ln(0.125)

or

( -0.09589)t = -2.0794

or

t = 21.68 minutes ≈ 21.7 minutes

6 0
3 years ago
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stich3 [128]
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3 0
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Misha Larkins [42]

Answer:

Your answer is -4

Hope that this is helpful. Tap the crown button, Like & Follow me

4 0
3 years ago
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