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3 years ago

10

Solution of (a+b) x^{2} + cx + a = 1

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1 answer:

natulia [17]3 years ago

8 0

Happy dshdhdhdudhdhdjdjrj

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Evaluate 0.53n+5 when n=3

Alex777 [14]

0.53(3) + 5 = <span>6.59
</span><span>6.59 is the answer.
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3 years ago

The diagonals of quadrilateral EFGH intersect at D(?3,4). EFGH has vertices at E(3,7) and F(?4,5). What must be the coordinates

Katen [24]

Answer:

G(3, 1), H(2, 3)

Step-by-step explanation:

When D is the midpoint of EG, it means ...

D = (E + G)/2

or

G = 2D -E = 2(3,4) -(3,7) = (2·3-3, 2·4-7) = (3, 1)

Likewise, H is ...

H = 2D -F = 2(3,4) -(4,5) = (2·3-4, 2·4-5) = (2, 3)

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3 years ago

Please help! 30 points!

Rashid [163]

Answer: $64.2^{\circ}$

Step-by-step explanation:

According to the cosine rule

$\cos C=\dfrac{a^2+b^2-c^2}{2ab}$

Here, $a=83, b=111, c=165,\ C=180^{\circ}-\theta$

Putting values

$\Rightarrow \cos (180^{\circ}-\theta)=\dfrac{83^2+111^2-165^2}{2\times 83\times 111}\\\\\Rightarrow \cos(180^{\circ}-\theta)=\dfrac{6889+12321-27225}{18426}\\\\\Rightarrow \cos(180^{\circ}-\theta)=\dfrac{-8015}{18426}=-0.4349\\\\\Rightarrow 180^{\circ}-\theta=\cos^{-1}(-0.4349)=115.77^{\circ}\\\Rightarrow \theta=64.23\approx 64.2^{\circ}$

So, the ship turns by $64.2^{\circ}$ north of west

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3 years ago

Please help how do I do this ??

AleksAgata [21]

For 10 here is the answer and for 9 i’ll reply to my comment

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3 years ago

Ms. Cisneros ordered 26 sandwiches for her students from Jimmy John's.

marissa [1.9K]

Answer:

142.96 dollars

Step-by-step explanation:

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3 years ago

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