3 years ago

Help please immediately

Mathematics

1 answer:

stealth61 [152]3 years ago

4 0

Answer:

I think its A because a deck of cards only have 52 cards

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Graph y = 2x + 2 * Make a table of ordered pairs<br><br> (photo attached)

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2 Times + 2 =4 table of a pair

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2 years ago

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Use the quadratic formula to solve x2 + 9x + 10 = 0.<br> What are the solutions to the equation?

vampirchik [111]

Answer:

$\large\boxed{x=\dfrac{-9\pm\sqrt{41}}{2}}$

Step-by-step explanation:

$\text{The quadratic formula of}$

$ax^2+bx+c=0$

$\text{If}\ b^2-4a0,\ \text{then the equation has two solutions}\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\=========================================$

$\text{We have}\ x^2+9x+10=0\\\\a=1,\ b=9,\ c=10\\\\\text{substitute:}\\\\b^2-4ac=9^2-4(1)(10)=81-40=41>0\qquad _{\text{two solutions}}\\\\\sqrt{b^2-4ac}=\sqrt{41}\\\\x=\dfrac{-9\pm\sqrt{41}}{2(1)}=\dfrac{-9\pm\sqrt{41}}{2}$

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2 years ago

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Solve - 2( x+ 4) = 12

Zolol [24]

Step-by-step explanation:

2(x+4) = 12

or, 2x + 8 = 12

or, 2x = 12-8

or, 2x = 4

or, x = 4÷2

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1 year ago

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2(x - 2.6) + 2.91 = 7.71

Gennadij [26K]

I'll show a step-by-step. I'm not in the mood to explain right now lol.

2(x-2.6)+2.91=7.71

2x-5.2+2.91=7.71

+5.20 +5.20

2x+2.91=12.91

-2.91 -2.91

2x=10

/2 /2

x=5

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hope it helps

sorry if it doesn't

3 0

2 years ago

Anyone know answer thankss

Anvisha [2.4K]

.12 rounded up but .11888 not rounded

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3 years ago