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3 years ago

If Sean just bought M baseball cards, and sold 4 to his friend, what will be the expression for how many cards he has left?

Mathematics

2 answers:

solong [7]3 years ago

8 0

M—4, 4 cards less than the original M number of cards.

djyliett [7]3 years ago

4 0

Answer:

m-4= the amount of cards he would have left.

I hope this helps! :)

-mark as brainliest please!-

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State a counterexample to the conjecture below if a number is divisible by 6 and 2 then there’s is divisible by 12

siniylev [52]

Any number that is divisible by 6 is already divisible by 2, but is not necessarily divisible by 12.

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Step-by-step explanation:

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Could someone help me rnnn?

GuDViN [60]

Answer:

vertex = (0, -4)

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Step-by-step explanation:

Given:

y-intercept of parabola: -4
parabola passes through points: (-2, 8) and (1, -1)

Vertex form of a parabola: $y=a(x-h)^2+k$

(where (h, k) is the vertex and $a$ is some constant)

Substitute point (0, -4) into the equation:

$\begin{aligned}\textsf{At}\:(0,-4) \implies a(0-h)^2+k &=-4\\ah^2+k &=-4\end{aligned}$

Substitute point (-2, 8) and $ah^2+k=-4$ into the equation:

$\begin{aligned}\textsf{At}\:(-2,8) \implies a(-2-h)^2+k &=8\\a(4+4h+h^2)+k &=8\\4a+4ah+ah^2+k &=8\\\implies 4a+4ah-4&=8\\4a(1+h)&=12\\a(1+h)&=3\end{aligned}$