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2 years ago

7x to the power of 2 is a what is ita) monomialb) binomialc) Trinomial

1 answer:

4 0

You can use the prefixes to figure this out:
Mono: one
Bi: two
Tri: three

So, because there is only one term, it is a monomial.

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If 3x−y=12, what is the value of 8x 2y

PSYCHO15rus [73]

Answer:

$8x=32\\2y=-24$

Step-by-step explanation:

When solving for 1 variable, set the other to 0 and solve.

$3x-y(0)=12\\3x=12\\x=4\\4*8=32\\8x=32\\\\3(0)-y=12\\-y=12\\y=-12\\-12*2=-24\\2y=-24$

8 0

3 years ago

What value should be added to the expression to create a perfect square? x^2 - 20x

boyakko [2]

To complete the square:
we take the coefficient ox "x" (which in this problem is -20)
we divide it by 2
square that number
then add it to both sides of the equation

-20 / 2 = -10
-10^2 = 100
then we add 100 to both sides of the equation:
x^2 -20x
x^2 -20x +100 = 100
******************************************************
To get the roots of the equation, we take the square root of both sides:
(x -10) * (x-10) = 10
(x-10) = square root (10)
x-10 = 3.1622776602 
x1 = 13.1622776602 
and don't forget that square root of 10 also equals -3.1622776602 
x2 = 10 - 3.1622776602
x2 = 6.8377223398

4 0

3 years ago

100 POINTS AND BRAINLIEST. I need help ASAP.

Svetach [21]

Answer:

Step-by-step explanation:

First what we must do is rewrite the table to find a solution:

0.25^x −0.75x+1

64 3.25

16 2.5

4 1.75

1 1

0.25 0.25

0.0625 −0.5

0.015625 −1.25

We see where the values of the function are the same:

x = 0 (1)

x = 1 (0.25)

answer:

x = 0

x = 1

4 0

2 years ago

From 1980-1990, the population of a country was increased by 20%. From 1990-2000, the population of the country was increased by

Mrac [35]

Answer:

The % of the increase in population from 1980 to 2000 will be 72.8%

Step-by-step explanation:

Let the population in the year of 1980 was x.

If the population from 1980 to 1990 has increased by 20%, then the population in the year 1990 will be $x(1 + \frac{20}{100}) = 1.2x$ .

Now, from 1990 to 2000, the population has again increased by 20%.

So, the population in the year 2000 will be $1.2x(1 + \frac{20}{100}) = 1.44x$ .

Again, from 2000 to 2010, the population has increased by 20%.

Therefore, the population in the year 2010 will be $1.44x(1 + \frac{20}{100}) = 1.728x$ .

Now, the population increased from x to 1.728x between the years 1980 to 2010.

Hence, the % of the increase in population from 1980 to 2000 will be $(\frac{1.728x - x}{x}) \times 100\% = 72.8\%$ (Answer)

7 0

3 years ago

What is the measure of the arc intercepted by abd

julsineya [31]

check the picture below.

5 0

3 years ago

7x to the power of 2 is a what is ita) monomialb) binomialc) Trinomial​

7x to the power of 2 is a what is ita) monomialb) binomialc) Trinomial