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2 years ago

-8 1/4+5 2/3 Need the answer ASAP‼️

Mathematics

1 answer:

WITCHER [35]2 years ago

3 0

get a common denominator of 12

-8 3/12 + 5 8 /12

subtract and take the sign of the larger

8 3/12 - 5 8/12

we need to borrow

8 + (12/12+3/12) - 5 8/12

8 15/12 - 5 8/12

2 7/12

the sign of the larger is negative

so -2 7/12

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defon

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2 years ago

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A huge ice glacier in the Himalayas initially covered an area of 454545 square kilometers. Because of changing weather patterns,

zloy xaker [14]

Answer:

$t=-20ln\left(\dfrac{1}{3}\right)$

Step-by-step explanation:

The relationship between A, the area of the glacier in square kilometers, and t, the number of years the glacier has been melting, is modeled by the equation.:

$A=45e^{-0.05t}$

We want to determine the value of t for which the area, A(t)=15 square kilometers.

$15=45e^{-0.05t}\\$Divide both sides by 45\\\dfrac{15}{45} =\dfrac{45e^{-0.05t}}{45}\\\dfrac{1}{3}=e^{-0.05t}\\$Take the natural logarithm of both sides\\ln\left(\dfrac{1}{3}\right)=ln\left(e^{-0.05t}\right)\\ln\left(\dfrac{1}{3}\right)=-0.05t\\$Divide both sides by -0.05$\\t=-\dfrac{ln\left(\dfrac{1}{3}\right)}{0.05} \\=-\dfrac{ln\left(\dfrac{1}{3}\right)}{0.05}\\t=-20ln\left(\dfrac{1}{3}\right)$

Therefore, the time for which the area will be 15 sqyare kilometers is:

-20 ln(1/3) years.

7 0

3 years ago

Suppose Set B contains 60 elements and the total number elements in either Set A or Set B is 82. If the Sets A and B have 12 ele

lidiya [134]

Answer:

34 elements

Step-by-step explanation:

Set B = 60 elements

Set A = x elements

A∩B = 12

A∪B = 82

x = (82+12 - 60) = 34 elements

7 0

2 years ago

Anybody have a real answer??

Elena-2011 [213]

I think Its 66 cm. Hope This Helped! Good Luck...

5 0

2 years ago

SOMEONE PLEASEE HELP ME WITH THIS!!! I NEED TO GET DONE

klasskru [66]

Answer:

B. 1

Step-by-step explanation:

$- \frac{1}{2} (10) + 6 = - 5 + 6 = 1$

6 0

1 year ago