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stiv31 [10]
3 years ago
8

Answer quick for brainliest.

Mathematics
2 answers:
Ilya [14]3 years ago
8 0

Answer:

4) x = -11    5) x = 4     6) x = -5    7) x = -20

Step-by-step explanation:

4)

Subtract 7 from both sides.

x+7-7 = -4-7

x = -11

5)

Add 5 to each side.

x-5+5 = -1+5

x = 4

6)

Add 7 to each side.

-7 + 7+x = -12+7

x = -5

7)

Subtract 6 from each side.

6-6+x = -14-6

x = -20

olga2289 [7]3 years ago
5 0

Answer:

x=-11

x=4

x=-5

x=-20

Step-by-step explanation:

jsj

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3x ^ 3 - x ^ 2 Determine if the expression is polynomial or not . If it is a polynomial , state the type and degree of the polyn
kaheart [24]

Answer:

The given expression is a cubic polynomial with degree 3.

Step-by-step explanation:

We are given the following in the question:

3x^3-x^2

Polynomial:

  • A polynomial is an expression.
  • It  consisting of variables and coefficients.
  • The variables and coefficients involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables.

Since, the given expression satisfies all the properties, it is a polynomial.

Degree of polynomial:

  • It is the maximum degree of the polynomial.

The degree of given polynomial is 3.

Nature of polynomial:

It is a cubic polynomial.

8 0
3 years ago
a bag contains 10 white gold balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio
wolverine [178]

Answer:70 white golf balls and 42 striped golf balls

Step-by-step explanation:

First we find the ratio of white to striped balls

White golf balls = 10

Striped golf balls = 6

Ratio = 10/6 = 5/3

We are told a golfer wants to add extra 112 balls to the already 16 balls

And the ratio after adding 112 balls must stay the same

First we label the extra golf balls to be added x and y

x = white golf balls

y = striped golf balls

So since we know the 112 balls added is a combination of the extra white golf balls and striped golf balls, we create an equation for that, labelling it (1)

x + y = 112 (1)

And we are told that after putting these extra balls the ratio must remain the same, which is 5/3

which will be (10 white balls + x) divided by (6 striped ball + y) will be equals to 5/3

So we create another equation for this, labelling it (2)

(10+x)/(6+y) = 5/3 (2)

So we have two simultaneous equations

We pick (1)

x + y = 112

We either make x or y the subject of formula, I choose to make x the subject of formula, we label the equation (3)

take y to the other side, causing it to change to -y

x = 112 - y (3)

We then work with (2)

(10+x)/(6+y) = 5/3

We cross multiply

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We open the brackets

Making the equation simplified and labelling it (4)

30 +3x = 30 + 5y

Collect like terms

3x -5y = 30-30

3x -5y = 0 (4)

Remember from (3) we know that

x = 112 -y

So we put (3) in (4)

3(112 - y) - 5y = 0

Open bracket

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Transfer -8y to the other side, changing to +8y

336 = 8y

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from (3) we know that x equals 112 - y

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x = 112 - y

x = 112 -42 = 70

x = 70

So therefore number of white golfs balls and striped golfs balls to be added to keep the same ratio is 70 and 42 respectively

4 0
3 years ago
Drag and drop a phrase to make the statement true.
Lady bird [3.3K]

A similar because all triangles add up to 180 ,

they both have 80 so leaves 100 degrees left..

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3 0
3 years ago
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Ray Of Light [21]

Answer:

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Step-by-step explanation:

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