What is the slope of the line that passes (-11,2) and (-1, -13). Plz show your work.

Mathematics

1 answer:

ANEK [815]3 years ago

7 0

Answer:

Slope = -3/2 or -1.5

Step-by-step explanation:

The Formula for slope is (The picture linked)

So, $\frac{-13-2}{-1-(-11)}$

Which is equal to... $\frac{-15}{10}$ when simplified

Which is equal to $\frac{-3}{2}$ or -1.5 which is the slope

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-. A collection of 40 coins is made up of nickels and dimes and is worth $2.60. Find how many were

Firlakuza [10]

9514 1404 393

Answer:

0 quarters
28 nickels

Step-by-step explanation:

Let d represent the number of dimes. Then 40-d is the number of nickels. The value is ...

0.10d +0.05(40 -d) = 2.60

0.05d = 0.60 . . . . . subtract 2.00

d = 0.60/0.05 = 12 . . . . . the number of dimes

40 -d = 40 -12 = 28 . . . . .the number of nickels

There are 0 quarters. There are 28 nickels.

3 0

3 years ago

Use f(x) = x^2 + 4x - 12

Mashutka [201]

Answer:

I imagine you aren't using calculus, so:

A: the leading term is $1>0$ , so it opens upwards.

B. First coordinate of the vertex is $-\frac b{2a}=-\frac42=-2$ , the second coordinate we'll find by replacing the value: $f(-2)=(-2)^2+4(-2)-12 = 4-8-12=-16$

C. Quadratic formula or if you stare at the equation long enough you can rewrite the equation as $f(x) = (x+6)\times(x-2)$ . At this point the x intercepts are the zeroes of the function, or -6 and 2.