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2 years ago

Simplify -4 + (-3) + 6

1 answer:

3 0

Start off with: -4 + (-3) + 6

First of all, when there is a, + sign and a - sign next to each other, the - side wins. E.g. 1 +- 3 = 1 - 3

So, apply this to our one:
-4 -3 +6

From there you solve, you can do this using the number line method or whatever you are into:
=-7 + 6
=-1
The answer is -1

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Solve the simultaneous equation x^2-4y^2=9 and x+2y=1

Salsk061 [2.6K]

Answer:

x=5,y=-2

Step-by-step explanation:

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2 years ago

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triangle ABC is isosceles, angle B is vertex angle , AB = 20x -2, AC =25x, and BC =12 x +20. Find x and the length of each side

lisov135 [29]

Length of AB = 18. 92

Length of AC = 26. 15

Length of BC = 32. 552

<h3>How to determine the sides of the triangle</h3>

Using the Pythagorean theorem, we have that

$(20 x-2)^2 = (12x + 20)^2 + (25x)^2$

Expand the bracket

$400x^2- 4 = 144x^2 + 400 + 625x^2$

Collect like terms

$400x^2 - 144x^2 - 625x^2 = 400 + 4$

$-369x^2 = 404$

Make x^2 subject

$x^2 = \frac{404}{369}$

$x = \sqrt{1.0948}$

$x = 1. 046$

Thus,

Length of AB = 20x -2 = 20(1. 046) - 2 = 18. 92

Length of AC = 25x = 25* 1.046 = 26. 15

Length of BC = 12x + 20 = 12(1. 046) + 20 = 32. 552

Learn more about isosceles triangles here:

brainly.com/question/1475130

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1 year ago

Which value is a solution of the equation 5-4x=-3?<br> A. 0<br> B. 2<br> C. -3<br> D. 1/4

Rashid [163]

B. 2 I hope that this helps.

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2 years ago

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What is -1/8×5×2/3=<br>please help me

Serga [27]

-10/24 is the answer.

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2 years ago

How do u write 5.6 as a fraction in simplest form

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3 years ago

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