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Vitek1552 [10]
3 years ago
12

Write an equivalent expression to 8k-(5+2k) without parenthesis

Mathematics
1 answer:
iVinArrow [24]3 years ago
7 0

Answer:

6k-5

Step-by-step explanation:

8k-(5+2k) write the equation out

8k-5-2k distribute the (-) to everything inside the parenthesis

6k-5 combine like terms

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Find the quotient: 15x^4y^2 - 25x^2y^3 + 45xy / 5xy:
salantis [7]

Answer:

  3x^3y − 5xy^2 + 9

Step-by-step explanation:

When there is only one denominator term, the quotient can be found by dividing the numerator terms individually.

\dfrac{15x^4y^2 - 25x^2y^3 + 45xy}{5xy}=\dfrac{15x^4y^2}{5xy}-\dfrac{25x^2y^3}{5xy}+\dfrac{45xy}{5xy}=3x^3y-5xy^2+9

_____

There are a couple of things to keep in mind here:

  • an exponent tells the number of times the factor is repeated
  • equal numbers of identical factors cancel from numerator and denominator, for example x^3/x = (x·x·x)/x = x·x = x^2. (One factor of x cancels.)
6 0
4 years ago
What is the radius of a sphere with a volume of 1/6 pie
Yakvenalex [24]

Answer:

\large\boxed{the\ radius\ R=\dfrac{1}{2}}

Step-by-step explanation:

The formula of a volume of a sphere:

V=\dfrac{4}{3}\pi R^3

We have

V=\dfrac{1}{6}\pi

Substitute:

\dfrac{4}{3}\pi R^3=\dfrac{1}{6}\pi        <em>divide both sides by π</em>

\dfrac{4}{3}R^3=\dfrac{1}{6}          <em>multiply both sides by 3</em>

3\!\!\!\!\diagup^1\cdot\dfrac{4}{3\!\!\!\!\diagup_1}R^3=3\!\!\!\!\diagup^1\cdot\dfrac{1}{6\!\!\!\!\diagup_2}

4R^3=\dfrac{1}{2}          <em>divide both sides by 4</em>

R^3=\dfrac{1}{2}:4\\\\R^3=\dfrac{1}{2}\cdot\dfrac{1}{4}\\\\R^3=\dfrac{1}{8}\to R=\sqrt[3]{\dfrac{1}{8}}\\\\R=\dfrac{\sqrt1}{\sqrt8}\\\\R=\dfrac{1}{2}

3 0
3 years ago
Find the value of x in the triangle
madam [21]

Answer:

x =72

Step-by-step explanation:

The sum of the angles of a triangle is 180 degrees

x+77+31 = 180

Combine like terms

x + 108 = 180

Subtract 108 from each side

x+108-108 = 180-108

x =72

7 0
3 years ago
Read 2 more answers
Arianna has $0.90 worth of nickels and dimes. She has 4 times as many nickels as
Tanya [424]

Answer:

X=3

Step-by-step explanation:

       0.05(4x) + 0.1x = 0.90

           0.2x + 0.1x = 0.90

                 0.3x = 0.90

                      x = 3

8 0
3 years ago
what is the expression and value of six less than the quotient of a number and two increased by 10 when n=20​
Alexxandr [17]

Answer:

The expression will be (\frac{n}{2} - 6) + 10(

2

n

−6)+10 and its value is 8.

Step-by-step explanation:

We are asked to write the expression and the value of “six less than the quotient of a number and two, increased by ten”.

If the number is n, then the expression will be (\frac{n}{2} - 6) + 10(

2

n

−6)+10 .

Now, if the value of n is 8 then the value of the expression will be (\frac{8}{2} - 6) + 10 = 4 - 6 + 10 = 8(

2

8

−6)+10=4−6+10=8 (Answer)

5 0
3 years ago
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