2 years ago

Year8 Maths(Angles) Help me plz!!

Mathematics

1 answer:

Doss [256]2 years ago

5 0

Step-by-step explanation:

a 360/9 = 40

b 2/9 × 360 = 80

c similarly 160

d 400

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Please help I need this soon

Leya [2.2K]

Answer:

Option (3) will be the answer.

Step-by-step explanation:

Area of a triangle = $\frac{1}{2}(\text{Base})\times (\text{Height})$

= $\frac{1}{2}(AB)(CD)$

Since, m∠A + m∠B + m∠C = 180°

60° + 60° + m∠C = 180°

m∠C = 180° - 120°

m∠C = 60°

Therefore, ΔABC is an equilateral triangle.

AB ≅ BC ≅ AC ≅12

Sin 60° = $\frac{CD}{BC}$

$\frac{\sqrt{3}}{2}=\frac{CD}{12}$

CD = 6√3

Now area of ΔABC = $\frac{1}{2}(6\sqrt{3})(12)$

= $36\sqrt{3}$

= 62.35

≈ 62.4 square units

Therefore, Option (3) will be the answer.

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3 years ago

Write the number in two forms 300,000+5,000+20+6

arlik [135]

305,026 is the answer

8 0

3 years ago

Read 2 more answers

Is synthetic division the same as polynomial division?

Elena-2011 [213]

The synthetic division is not same as the polynomial long division.

Given:

Let's take a polynomial function f(x) = $x^3+2x^2-5x-6$ divided by x-2.

Using synthetic divison:

2 1 2 -5 -6

0 2 8 6

1 4 3 0

(x-2)(x^2+4x+3)

= (x-2)(x+3)(x+1)

Polynomial long division:

x-2) $x^3+2x^2-5x-6$ (x^2+4x+3

x^3- 2x^2

4x^2 - 5x + 6

4x^2 - 8x

3x + 6

3x - 6

=(x-2)(x^2+4x+3)

Learn more about the division here:

brainly.com/question/21416852

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1 year ago

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B

Sphinxa [80]

Answer:what do u need help on

Step-by-step explanation:

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3 years ago

For f(x)=4x+1 and g(x)=x^2-5 find (f-g)(x)

Marrrta [24]

$f(x)=4x+1,\ g(x)=x^2-5\\\\(f-g)(x)=f(x)-g(x)\\\\\text{Therefore}\\\\(f-g)(x)=(4x+1)-(x^2-5)=4x+1-x^2+5=-x^2+4x+6$

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3 years ago

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