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Furkat [3]
3 years ago
7

What is the value of 5 2/3 +(-3 5/6)+(-2/3)? ​

Mathematics
1 answer:
algol [13]3 years ago
5 0

Answer:  I got 2/9 but im not sure if its right

Step-by-step explanation:

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(x²-y²)³+(y²-z²)³+(z²-x²)³/(x-y)³+(y-z)³+(z-x)³ evaluate
AveGali [126]
We use the fact that if x+y+z = 0, then x³+y³+ z³ = 3 x y z.<span>

(x</span>²-y²) + (y²-z²) + (z²-x²)  = 0<span>
also: (x-y) + (y-z)+ (z-x) = 0
we assume that:  x </span>≠y ≠ z.
<span>

hence,

(x²-y²)³ + (y²-z²)³ + (z²-x²)³  ÷  (x-y)³ + (y-z)³ + (z-x)³
=  3 (x</span>²-y²) (y²-z²) (z²-x²) ÷ [3 (x-y) (y-z) (z-x)]
<span>=  (x+y) (y+z) (z+x)</span>
5 0
3 years ago
As mountain climbers know, the higher you go, the cooler the temperature gets. At noon on July 4th last summer, the temperature
Amanda [17]

Answer:

a. 63 °F

b. When i decided to model the situation, I assumed that the temperature varied inversely as the elevation and that the change in elevation or temperature was linear.

Step-by-step explanation:

a. To model this situation, we assume the temperature varies inversely as elevation decreases since at elevation 6288 ft the temperature is 56 °F and at elevation 2041 ft, the temperature is 87 °F

So, we model this as a straight line.

Let m be the gradient of the line.

Let the (6288 ft, 56 F) represent a point on the line and (2041 ft, 87 °F) represent another point on the line.

So m = (6288 ft - 2041 ft)/(56 °F - 87 °F) = 4247 ft/-31 °F = -137 ft/°F

At elevation 5376 ft, let the temperature be T and (5376 ft, T) represent another point on the line.

Since it is a straight line, any of the other two points matched with this point should also give our gradient. Since in the gradient, we took the point (6288 ft, 56 °F) first, we will also take it first in this instant.

So m = -137 ft/ °F = (6288 ft - 5376 ft)/(56 °F - T)

-137 ft/°F = 912 ft/(56 °F - T)

(56 °F - T)/912 ft = -1/(137 ft/ °F)

56 °F - T = -912 ft/(137 ft/°F)

56 °F - T = 6.66 °F

T = 56 °F + 6.66 °F

T = 62.66 °F

T ≅ 62.7 °F

T ≅ 63 °F to the nearest degree

b. When i decided to model the situation, I assumed that the temperature varied inversely as the elevation and that the change in elevation or temperature was linear.

5 0
3 years ago
Multiply the expression <br> 2/3 (6x + 15y)<br> and simplify completely.
12345 [234]

Answer: 4x+10y

you can't simplify 4x+10y

6 0
3 years ago
One stamp is randomly selected from a 10-by-10 sheet of 100 stamps. What is the probability that the stamp selected is not along
kap26 [50]
Ten plus eight teen plus eight
Thirty six

Ten times ten
One hundred

One hundred minus thirty six
Sixty four

1/64 is the fraction and the answer
4 0
3 years ago
Which graph has a steeper negative slope and a y-intercept that is closer to the origin than y = - 1/2x - 6
Sidana [21]

Answer:

the second picture

Step-by-step explanation:

3 0
3 years ago
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