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VladimirAG [237]
4 years ago
15

-6 minus -2 1/2step by step explanation please ​

Mathematics
2 answers:
Sliva [168]4 years ago
8 0

Answer:

-3 1/2

Step-by-step explanation:

-6--2 1/2

you change the two minuses to addition sign to get -6+2 1/2 which is -3 1/2

tatuchka [14]4 years ago
7 0

Turn fraction into a decimal.

-2 1/2 = -2.5

Remember that when you subtract a negative number it automatically changes it to adding a positive number.

-6 + 2.5 = -3.5

Hope This Helped! Good Luck!

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Which of the following is the product of the rational expressions shown below?
Molodets [167]

Answer:

A

Step-by-step explanation:

6/x* 5/(2x+1) = 30/ 2x^2+x

6 0
3 years ago
A solid metal cube of side 1-2 cm has a mass of 15 grams.
sashaice [31]

Answer:

The mass of the second cube is about 1085.07 grams.

Step-by-step explanation:

I assume '1-2 cm' means 1.2cm here. Correct me if I am wrong and I'll edit my answer.

First, find the density of this cube:

d=\frac{m}{v}

where d is density, m is mass, and v is volume.

We have one of those, but we also need volume. The volume of a cube is just:

v=a^3

where a is the length of a side.

\rightarrow v=1.2^3\\\rightarrow v=1.728

The volume of this cube is 1.728cm³. Now, you can find the density;

\rightarrow d=\frac{15}{1.728}\\\rightarrow d\approx8.6806

The density of this material is about 8.68 grams per cubic centimeter.

Finally, you can use that density to find the mass of the other cube. Fin the volume of the second cube:

\rightarrow v=5^3\\\rightarrow v=125

The volume is 125cm³. Given the density and the volume, you can calculate the mass:

\rightarrow d=\frac{m}{v}\\\rightarrow 8.6806=\frac{m}{125}\\\rightarrow 8.6806\times125=m\\\rightarrow m=1085.0694

The mass of the second cube is about 1085.07 grams.

4 0
3 years ago
The price of an item has been reduced by 70%. The original price was $30. What is the price of the item now?​
scoray [572]

Answer:

$9

Step-by-step explanation:

30*(100%-70%)=9

8 0
3 years ago
Read 2 more answers
What is this equation 4(3+5)- 3.9*2<br> THIS ISN´T A DECIMAL ITS A MIDDLE DOT
vredina [299]

Answer:

The answer is letter 'J'

Step-by-step explanation:

4(3+5) - 3 x 9^2

4(8) - 3 x 9^2  ←  9 x 9 = 81

16 - 3 x 9^2

16 - 3 x 81

13 x 81

1,053

4 0
3 years ago
How does the graph of g(x) = (x - 3)^3 - 2 differ from the group of f(x) = x^3?
Vinvika [58]

Answer:

B

Step-by-step explanation:

f(x) = x³

g(x) = (x - 3)³ - 2

The inside of the parenthesis represents a horizontal shift

If the number operation being done to x inside of the parenthesis is adding ( or if the number is positive ) then the graph will shift to the left. If the operation being done inside of the parenthesis to x is subtraction ( or if the number is negative ) then the graph will shift to the right.

The operation being done is subtraction therefore it will shift to the right. So it will go 3 units to the right.

the number on the outside works like a y intercept. if it's positive it goes up, if it's negative it goes down. the number is -2 so it will go down 2 units

we can conclude that g is shifted 3 units right and 2 units down

the answer is B

6 0
3 years ago
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