Read the statement and decide whether the change is physical or chemical. Burning a campfire is a

Mathematics

1 answer:

elena55 [62]4 years ago

4 0

Burning campfire is a chemical reaction. Anything that's on fire creates chemical reactions.

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Find the slope of the line passing through the points 3, 4 and 8 , -3 .

olga55 [171]

Answer:

m= -7/5

Step-by-step explanation:

(x1,y1)=(3,4)

(x2,y2)=(8, -3)

Use the slope formula:

m = y2 - y1

x2 - x1

(-3-4)/ (8-3)

= -7/5

8 0

3 years ago

Will mark brainiest 7 powered by 8 expiation Or else not brianly answer

Bezzdna [24]

Answer:

823543

Step-by-step explanation:

7 times 7 times 7 times 7 times 7 times 7 times 7 times 7 times = 823543

you have to multyply 7*7 8 times

8 0

4 years ago

In the function f(x) = 4(x2 − 6x + ____) + 20, what number belongs in the blank to complete the square?

Savatey [412]

The right answer for the question that is being asked and shown above is that: In the function f(x) = 4(x2 − 6x + ____) + 20, what number belongs in the blank to complete the square?

x2 - 6x + 9

So the answer on the blank space is 9. It should be a perfect square.
= 6/2
= 3^2
= 9

3 0

3 years ago

Write an equation of the line that is parallel to 2x + 4y = 6 and passes through the point (6, 4). A) y = 2x + 4 B) y = 2x - 8 C

Lynna [10]

Answer:

$\large\boxed{D.\ y=-\dfrac{1}{2}x+7}$

Step-by-step explanation:

$\text{Let}\\k:\ A_1x+B_1=C_1\\\\l:\ A_2x+B_2y=C_2\\\\\text{then}\\\\k\ \parallel\ l\iff A_1=A_2\ \wedge\ B_1=B_2\\==========================$

$\text{We have the equation:}\ 2x+4y=6\\\\\text{Therefore the equation of a parallel line is:}\ 2x+4y=C\\\\\text{Put the coordinates of the given point to the equation and solve for}\ C:\\\\(6,\ 4)\to x=6,\ y=4\\\\C=2(6)+4(4)\\C=12+16\\C=28\\\\\text{The equation in the standard form:}\\\\2x+4y=28$

$\text{Convert to the slope-intercept form}\ y=mx+b:\\\\2x+4y=28\qquad\text{subtract}\ 2x\ \text{from both sides}\\\\4y=-2x+28\qquad\text{divide both sides by 4}\\\\y=-\dfrac{2}{4}x+\dfrac{28}{4}\\\\y=-\dfrac{1}{2}x+7$