3 years ago

PLS HURRY TY !! Factor the quadratic expression completely. 2x^2 + 7x + 3

Mathematics

1 answer:

larisa86 [58]3 years ago

7 0

The answer is (2x+1)(x+3). HOPE THIS HELPED!

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It's 100; 180-50-30=100

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Hoochie [10]

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The difference between Sally’s PE mark and Science mark is 12, and the sum of the marks is 154. If the PE mark is the higher mar

Vesna [10]

Answer:

PE = 83 and Science = 71

Step-by-step explanation:

let P represent PE and S represent Science with P > S, then

P + S = 154 → (1)

P - S = 12 → (2)

Adding the 2 equations term by term eliminates S

2P = 166 ( divide both sides by 2 )

P = 83

Substitute P = 83 into (1)

83 + S = 154 ( subtract 83 from both sides )

S = 71

Hence PE mark = 83 and Science mark = 71

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3 years ago

In this question, I’m supposed to use sin instead of tan. But the question is worded weirdly. How can I know that I’m suppose to

zhannawk [14.2K]

Answer:

Since the kite is flying, the hypotenuse side of the triangle is 32.4m, while the adjacent side is unknown.

Given the opposite and hypotenuse, we use sine to find the angle.

$\boxed{sinθ = \frac{opp}{hyp} }$

$sinθ = \frac{18.3}{32.4}$

$θ = {sin}^{ - 1} ( \frac{18.3}{32.4} )$

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Thus, the angle the kite string makes with the ground is 34.4°.

Notes:

$cosθ = \frac{adj}{hyp}$

$tanθ = \frac{ opp}{adj}$

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Find the arc length of BC, use 3.14 for pi and round your answer to the nearest<br> tenth.

cupoosta [38]

Answer:

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Step-by-step explanation:

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