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MAVERICK [17]
3 years ago
12

What is -3.2 + (1 1/2) + (-2)

Mathematics
2 answers:
CaHeK987 [17]3 years ago
6 0

Answer:

-3.7

Step-by-step explanation:

-3.2 + 1.5 -2 = -3.7

Ksju [112]3 years ago
5 0

Answer:

-5/2

Step-by-step explanation:

-6+11/2+(-2)

-12+11+(-4)/2

-5/2

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Applying Inverse Properties In Exercise,apply the inverse properties of logarithmic and exponential functions to simplify the ex
Mazyrski [523]

Answer:

x^2

Step-by-step explanation:

apply the inverse properties of logarithmic and exponential functions to simplify  

ln(e^{x^2})

all logs has base 'e'

Inverse property of log says that

ln(e^x)=x, the value of ln e=1

we apply this property in our problem. ln has same base 'e' .  ln and 'e' gets cancelled

ln(e^{x^2})

x^2

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Find x. Round your answer to the nearest tenth of a degree.
solniwko [45]

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4

Step-by-step explanation:

7 0
3 years ago
At 7:00 A.M., Alicia pours a cup of tea whose temperature is 200°F. The tea starts to cool to room temperature (72°F). At 7:02 A
alexgriva [62]

Answer: A) Option B

B) 22.3 minutes.

Step-by-step explanation:

The temperature decreases in an exponential decrease, this means that we can write the equation as:

T(x) = A*r^x + B

Where A is the difference between the initial temperature and the room temperature, B is the room temperature, and r is a positive number smaller than 1, that says "how fast" the temperature decreases (and x is the variable, in units of time)

We know that the initial temperature

A = 200° - 72° = 128°

B = 72°

T(x) = 128°r^x + 72°

The only option with those two values is option B.

T(x) =  128(0.989)^x + 72

We should check that when x = 2m, the temperature must be 197°

T(2m) = 128*(0.989)^2 + 72 = 197.2° (that we can round down to 197°)

So this equation is correct

Now we want to find the time such the temperature is 172°F

then:

172° = 128°(0.989)^x + 72°

100° = 128°(0.989)^x

100/128 = (0.989)^x

x = ln(100/128)/ln(0.989) = 22.3 minutes.

Let's check in our equation:

T(22.3) =  128°(0.989)^22.3 + 72 = 172°

8 0
3 years ago
Which statements about the value of the digits in the number 6,666,666 are true?
tatiyna

B. The digit in the hundred thousands place is 1/10 the value of the digit in the millions place.

C. The digit in the ten thousands place is 10 times the value of the digit in the thousands place.

Hope this helps !

Photon
4 0
2 years ago
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