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prisoha [69]
2 years ago
12

X+25+7x-65=180 solve for x

Mathematics
2 answers:
Gnesinka [82]2 years ago
8 0

Answer:

x = 27.5

Step-by-step explanation:

(x + 25) + (7x - 65) = 180

8x - 40 = 180

8x = 220

x = 27.5

(27.5) + 25 + 7(27.5) - 65 = 180

52.5 + 192.5 - 65 = 180

245 - 65 = 180

180 = 180

kozerog [31]2 years ago
6 0
X = 27.5

8x = 220, so 220/8 = 27.5
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NOTE -- THIS QUESTION HAS BEEN ANSWERED ALREADY!!!
DanielleElmas [232]

Answer:

The cubic polynomial is: x³ - x² - 6x.

Step-by-step explanation:

Given the degree and the roots of the polynomial we can find it.

An n - degree polynomial has n roots.

Here, given that the degree of the polynomial is 3 and three roots are given. Also, if (x - a) is a factor of a polynomial then x = a is a root of the polynomial. The converse is also true.

Since, the roots of the polynomial are given to -2, 0, 3 then it should have had the following factors.

(x + 2)(x - 0)(x - 3) = 0

Multiplying them we get:

⇒ $ (x^2 + 2x)(x - 3) $

$ = x^3 - 3x^2 + 2x^2 - 6x $

$ = x^3 - x^2 - 6x $ which is the required cubic polynomial.

Hence, the answer.

4 0
3 years ago
The result after adding a set of numbers or is called a ___.
german

Answer:

The result after adding a set of numbers or is called a sum.

Step-by-step explanation:

Consider the provided information.

The four mathematical operations are:

+,-,\times ,\div

The sign + is used to add numbers.

The sign - is used to subtract the numbers.

The sign × is used for the product of the numbers.

The sign ÷ is used for division of the numbers.

When we add two or more number by using the operator + the obtained number or value is called the sum of the numbers.

For example:

Consider the number: 2 + 5 if we add the number the resulting value will be 7.

The number 7 is the sum of 2 and 5.

Thus, the result after adding a set of numbers is called a sum.

8 0
3 years ago
What is the a ? a-(-14)= -18
Elenna [48]

Answer:

a=-32 if you think that was a good answer pls mark as brainliest

Step-by-step explanation:

a-(-14) is the same as a+14

a+14=-18

a=-32

6 0
2 years ago
Please help...A utility pole is 35 ft tall. The pole creates a 50 ft shadow. What is the angle of elevation of the sun? Round yo
Naddika [18.5K]

Answer:

  35°

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the relationship between trig functions and sides of a right triangle. The pole and its shadow form the legs of the right triangle with the side adjacent to the angle of elevation being the shadow. "TOA" tells you ...

  Tan = Opposite/Adjacent

  tan(elevation angle) = (pole height)/(shadow length)

  tan(elevation angle) = 35/50 = 0.7

The inverse tangent function, arctan( ) or tan⁻¹( ), is used to find the angle from the value of its tangent.

  elevation angle = arctan(0.7) ≈ 34.99° ≈ 35°

4 0
3 years ago
How do you write 4.2x10^5 in scientific notation
Lynna [10]

Answer:

420000 should be the answer

Step-by-step explanation:

7 0
3 years ago
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