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3 years ago

Helpppp! I’ll mark brainliest

Mathematics

1 answer:

PolarNik [594]3 years ago

8 0

Answer:

1 is comutative 2 is distributive 3 is addition and 4 is multiplication

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She bought six CDs after using the gift certificate

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3 years ago

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What is the slope of (-1,2) and (0,-4)

Serga [27]

Answer:

- 6

Step-by-step explanation:

$slope = \frac{ - 4 - 2}{0 - ( - 1)} = \frac{ - 6}{0 + 1} = \frac{ - 6}{ 1} = - 6 \\$

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4 years ago

The area of the triangle formed by x− and y− intercepts of the parabola y=0.5(x−3)(x+k) is equal to 1.5 square units. Find all p

jeka57 [31]

Answer:

K = -1 or -2

Step-by-step explanation:

Given the equation of parabola is, y = 0.5(x-3)(x+k).

Finding y-intercept, put x=0 and solve for y :-

y = 0.5(0-3)(0+k)

y = 0.5(-3)(k)

y = -1.5k

Finding x-intercepts, put y=0 and solve for x :-

0 = 0.5(x-3)(x+k)

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

x = 3 OR x = -k

So, the coordinates of triangle ABC are:-

A(0, -1.5k), B(3, 0), and C(-k, 0)

Assuming origin O(0,0), find the area of triangle ABC:-

Area = (1/2) * BC * OA

Area = (1/2) * (k+3) * (1.5k)

But given the area is 1.5 square units.

So, (1/2) * (-k-3) * (1.5k) = 1.5

(1/2) * (-k-3) * (k) = 1

k(-k-3) = 2

-k² -3k -2 = 0

k² +3k +2 = 0

k² +2k +k +2 = 0

(k+2)(k+1) = 0

So, k = -1 or k = -2

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3 years ago

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10.9 as a fraction or mixed number

strojnjashka [21]

The answer is 10 9/10 hope this helped

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3 years ago

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Solve each system by graphing.

ValentinkaMS [17]

9514 1404 393

Answer:

no solution

Step-by-step explanation:

These lines have the same slope and different y-intercepts, so graph as parallel lines. As such, they will have no point of intersection, so there is NO SOLUTION to this system of inconsistent equations.

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3 years ago