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3 years ago

Write an expression to represent: Eight more than the product of two and a number x xx

Mathematics

1 answer:

My name is Ann [436]3 years ago

8 0

Answer:

8 + (2 x n)

Step-by-step explanation:

I simply took the expression and put it into mathimatical form. Eight = 8. More than implies to addition. Product implies to multiplication, two and a number implies to 2 x n. N stands for number.

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A radio active isotope decays according to the exponential decay equation where t is in days. Round to the thousandths place. Th

Whitepunk [10]

To calculate the value of the half life we proceed as follows;
a/2=ae^(-2.360t)
the a(s) will cancel and we shall remain with:
1/2=e^-2.360t
introducing the natural logs we get:
ln (1/2)=ln e^(-2.360t)
ln(1/2)=-2.360t
hence;
t=(ln 0.5)/(-2.360)
t=0.294
the answer is t=0.294

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2 years ago

John traveled 80% of the way from yellow-town to green-fields by train at an average speed of 80 miles per hour. the rest of the

zaharov [31]

Pick 100 km for D...
This would yield T=100 minutes 

Using the question stem we calculate 80 km were traveled in 1h (or 60 minutes).... 

This leaves us with 40 minutes (2/3 of an hour) to travel 20km..... 

R*T=D 

R*2/3=20 

R=30 

Answer A....

3 0

3 years ago

After sitting in a refrigerator for a while, a turkey at a temperature of 34 degrees F is placed on the counter and slowly warms

Anton [14]

Answer:

k = 0.006
T = 48 °F

Step-by-step explanation:

The initial temperature difference of 72 -34 = 38 °F is reduced to a difference of 72 -41 = 31 °F after 35 minutes. The exponential term in the temperature expression could have the factor ...

(31/38)^(t/35) = e^(-kt)

Taking the natural log, we find ...

(t/35)ln(31/38) = -kt

k = ln(38/31)/35 ≈ 0.00581711

To the nearest thousandth, this is ...

k ≈ 0.006

Using this in the equation for temperature, we have ...

T = 72 -38e^(-0.006t)

Filling in the desired value for t (80), we find the turkey temperature after 80 minutes to be about

T = 72 -38e^(-.006×80) = 72 -38e^-.48 ≈ 48.49

T ≈ 48 °F

The value of k is about 0.006, and the turkey temperature is about 48 °F.

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2 years ago

Help me please tomorrow there is my exam

emmainna [20.7K]

Answer:

$\frac{2y^{3} }{x^{2} - y^{2} }$

2y^3 / x^2 - y^2

hope this helps and is right. p.s i really need brainliest :)

if my answer is wrong then I am incredibly sorry!

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2 years ago

What is 6285 divided by 89?

dalvyx [7]

The answer to the question is 70.6179775281. which also can be converted to 71.

7 0

3 years ago

Read 2 more answers