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4 years ago

Could some one help pls ill mark brainlist

Mathematics

2 answers:

Effectus [21]4 years ago

4 0

Add alike terms. Basically you add stuff together with the same variable! Since -8y and +3y have a y variable, they can be added together. Same with x.

-8y + 3y = -5y. This is because you’re adding 3 from a negative number.

5x - 9x = -4x. You’re subtracting 9 from a positive number.

That is as simple as it can get, so you put those two numbers in the same equation.

The simplest expression is:

-5y - 4x

svlad2 [7]4 years ago

4 0

Answer: −4x−5y

Step-by-step explanation:

−8y+5x+3y−9x

=−8y+5x+3y+−9x

Combine Like Terms:

=−8y+5x+3y+−9x

=(5x+−9x)+(−8y+3y)

=−4x+−5y

−4x−5y

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4 years ago

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Find the measures of the unknown angles in the triangle shown. Round it the nearest degree.

Fudgin [204]

Answer:

x = 49°

y = 41°

Step-by-step explanation:

Recall: SOH CAH TOA

✔️To find x, the trig function we would apply is Cos, which is:

Cos θ = Adjacent/Hypotenuse (CAH)

θ = x

Adjacent = 13

Hypotenuse = 20

$Cos(x) = \frac{13}{20}$

$x = cos^{-1}(\frac{13}{20})$

x = 49.4583981°

x = 49° (nearest degree)

✔️To find y, the trig function we would apply is Sin, which is:

Sin θ = Opposite/Hypotenuse (SOH)

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$y = Sin^{-1}(\frac{13}{20})$

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3 0

3 years ago

½x + 1 ⅔ subtracted from 1 ½x - 1 ⅓<br> simplify IF NEEDED

Volgvan

Answer:

$( \frac{1}{2} x + 1 \frac{2}{3} ) - (1 \frac{1}{2} x - 1 \frac{1}{3} ) \\ = ( \frac{1}{2} - \frac{3}{2} )x + ( \frac{5}{3} + \frac{4}{3} ) \\ = \frac{ - 2}{2} x + \frac{9}{3} \\ = - x + 3 \\ = 3 - x$

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3 years ago

Whats the answer???

Novay_Z [31]

X is -7. :)

Hope that helped :)

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3 years ago

What is the radius of a hemisphere with a volume of 6496 (cm to the third power) to the nearest tenth of a centimeter?

professor190 [17]

Answer:

14.6cm

Step-by-step explanation:

The volume of a hemisphere is 2/3 × π × r³ → 6496 = 2/3 × π × r³. You can divide both sides by 2/3π to get r³ on its own → 3103.611531 = r³. To find r, cube root both sides → r = ∛3103.611531 = 14.5835... ≈ 14.6cm.

Hope this helps!

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3 years ago

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