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2 years ago

Which expressions are equivalent to (13x+2x−53x)−(−13x+5) ?

Mathematics

1 answer:

andrew-mc [135]2 years ago

4 0

Answer:A. The first one and second B.

Step-by-step explanation:i took the test i promise!

mark me as brainiest please!

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Help I will give brainliest

natta225 [31]

I think it’s A i’m not 100% sure tho ❤️

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3 years ago

Find the surface area

Mrac [35]

Answer:

Step-by-step explanation:

The surface area of a solid object is a measure of the total area that the surface of the object occupies.

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2 years ago

If the cost of 6 sandwiches and 4 drinks is $53 how much is one drink

natita [175]

Answer: The cost of one drink is $5.30.

Explanation: 6 + 4 = 10, and 53/10 = 5.3, therefore the cost of one drink is $5.30.

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2 years ago

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Solve this for Brainliest! See the attachment [Level - GCSE]

madreJ [45]

Answer:

$x = 3 + 4\sqrt{3}$

Step-by-step explanation:

OPQ is a right angle triangle.

Using Pythagoras

$x^{2} + (x+5)^{2} = (x+8)^{2}\\x^{2} + x^{2} + 10x +25 = x^{2} + 16x + 64\\x^{2} + x^{2} - x^{2} + 10x - 16x + 25 - 64 = 0\\x^{2} - 6x -39 = 0$

Using quadratic formula

$x = \frac{-b \± \sqrt{b^{2}-4ac}}{2a}\\x = \frac{-(-6) \± \sqrt{(-6)^{2}-4(1)(-39)}}{2(1)}\\x = \frac{6}{2} \± \frac{\sqrt{192}}{2}\\x = 3 \± \frac{8\sqrt{3}}{2}\\x = 3 \± 4\sqrt{3}$

$x = 3 + 4\sqrt{3} = 9.928(4s.f.)$

$x = 3 - 4\sqrt{3} = -3.928(4s.f.)$ (Length can't be negative)

∴ $x = 3 + 4\sqrt{3}$

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2 years ago

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What do I do in the right side column

KIM [24]

The same thing to the other side

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3 years ago

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