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3 years ago

I NEED HELP AND BEING TIMED SO GIVE CROWN FOR ANSWER

Mathematics

2 answers:

-Dominant- [34]3 years ago

7 0

Answer:

Correct Answer: Option 3

Step-by-step explanation:

beks73 [17]3 years ago

5 0

Answer:

All rectangles are parallelograms. Parallelograms have 2 pairs of parallel sides. Therefore, all rectangles have 2 pairs of parallel sides.

Step-by-step explanation:

I'm pretty sure all rectangles are parallelograms because if the side weren't parallel, it would be like a trapezoid, or something like that. Hope this is helpful!

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Solve 2x2 + 20x = −38. (1 point)

RoseWind [281]

Answer:

The solutions are $x=-5+\sqrt{6}$ and $x=-5-\sqrt{6}$

Step-by-step explanation:

we have

$2x^{2} +20x=-38$

Divide by $2$ both sides

$x^{2} +10x=-19$ ------> $x^{2} +10x+19=0$

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2} +10x+19=0$

$a=1\\b=10\\c=19$

substitute

$x=\frac{-10(+/-)\sqrt{10^{2}-4(1)(19)}}{2(1)}$

$x=\frac{-10(+/-)\sqrt{100-76}}{2}$

$x=\frac{-10(+/-)\sqrt{24}}{2}$

$x=\frac{-10(+/-)2\sqrt{6}}{2}$

$x1=\frac{-10(+)2\sqrt{6}}{2}=-5+\sqrt{6}$

$x2=\frac{-10(-)2\sqrt{6}}{2}=-5-\sqrt{6}$

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2 years ago

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How do you do 5+5?

steposvetlana [31]

Answer:

If you had 5 apples and Johnny gave you five more how much do you have? Lets count

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3 years ago

The value of y is directly proportional to the value of x. If y = 180 when x = 50, the value of y when x = 25?

Triss [41]

Answer: y = 90

Step-by-step explanation:

Since x and y are proportional, when x =25 (which is 50 divided by 2), y would be 90 since 90 is 180 divided by 2.

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2 years ago

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Ierofanga [76]

Answer: approximately km*1.61=m

Step-by-step explanation:

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The son is 20 years younger than the father, and 5 years ago he was 5 times younger than him. How old is each of them?

Hatshy [7]

Answer:

wdym

Step-by-step explanation:

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2 years ago