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2 years ago

ANSWER ASAP x+4.5 x= 1.2 A: 3.3 B: 6.7 C: 5.7

Mathematics

1 answer:

swat322 years ago

6 0

Answer:

C.5.7

Step-by-step explanation:

plug in the x value then add 4.5 to 1.2 and booyyah

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2. Is x² + 4√x a polynomial ? Justify your answer.

nexus9112 [7]

Answer:

No it isn't

As the variable "x" has root in it which means it isn't a whole number and for a expression to be a polynomial the variable must be whole no.

Hope it helps you!

6 0

1 year ago

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A line passes through the points (1, 3) and (3, -1) on a coordinate plane. What is the equation of this line in slope-intercept

FromTheMoon [43]

Answer:

y=[-2]x[+][5]

Step-by-step explanation:

$\frac{-1-3}{3-1}=\frac{-4}{2} =-2$ m= -2

Using the point (1,3) Find the value of b

3= -2(1)+b

3= -2+b

+2 +2

---------

5=b

y= -2x+5

4 0

2 years ago

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Write the equation of the line that is the perpendicular bisector of the segment with endpoints (4, 1) and (2, -5)

Sedbober [7]

Answer: $\bold{y=-\dfrac{1}{3}x-1}$

Step-by-step explanation:

(4, 1) & (2, -5)

First, find the slope (m) and then the perpendicular (opposite reciprocal) slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}\\\\\\m=\dfrac{-5-1}{2-4} = \dfrac{-6}{-2}=3\quad \rightarrow \quad m_{\perp}=-\dfrac{1}{3}\\$

Next, find the midpoint of (4, 1) and (2, -5):

$Midpoint=\bigg(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\bigg)\\\\\\.\qquad \qquad=\bigg(\dfrac{4+2}{2},\dfrac{1-5}{2}\bigg)\\\\\\.\qquad \qquad=\bigg(\dfrac{6}{2},\dfrac{-4}{2}\bigg)\\\\\\.\qquad \qquad=(3, -2)$

Lastly, input the perpendicular slope and the midpoint into the Point-Slope formula to find the equation of the line:

$y - y_1 = m_{\perp}(x - x_1)\\\\y - (-2) = -\dfrac{1}{3}(x - 3)\\\\y + 2=-\dfrac{1}{3}x +1\\\\y =-\dfrac{1}{3}x - 1\\$

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2 years ago

Sally has 9 more cats than dogs write a standard form equation in c,d order this situation implies

nalin [4]

I think it will be : 9+c=d

8 0

3 years ago

An auditorium has 30 rows with 10 seats in the first row, 12 in the second row, 14 in the third row, and so forth. How many seat

WARRIOR [948]

Answer:

My answer is 1170 but the way I figured out the problem was by listing numbers 1-30. the problem state that the 1st row had 10, 2nd row had 12, and 3rd row had 14 and so forth. So I basically did the same method till I got to 30 and then add up all the numbers which gave me the answer of 1170.

Step-by-step explanation:

8 0

3 years ago

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