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erastova [34]
2 years ago
5

Pls help me asap important assessment

Mathematics
1 answer:
oksian1 [2.3K]2 years ago
7 0

Answer:

x-6

Step-by-step explanation:

The mistake when expanding the bracket 3(x-6),3 was supposed to multiply 6 but instead it was added to 6 instead

the correct working

3(x-6)+(4x+12)-6x

3x-18+4x+12-6x

(3x+4x-6x)+(-18+12)

=x-6

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Diane needs 165 pieces of candy to hand out to guests at a party she is hosting. Each bag of candy contains 20 pieces. She has 2
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1. Isosceles Triangle The two equal sides of an isosceles triangle are each 42
gavmur [86]

Answer:

1. H = 29 cm

2. θ = 44°

Step-by-step explanation:

1. We can find the height of the triangle by considering the isosceles triangle as two right triangles. The height can be found by using Pitagoras:

L^{2} = H^{2} + B^{2}

Where:

L: is the sides of the isosceles triangle = 42 cm

B: is the base = 30 cm

H: is the height =?

Then, the height is:

H = \sqrt{L^{2} - B^{2}} = \sqrt{(42 cm)^{2} - (30 cm)^{2}} = 29.4 cm = 29 cm

2. The two equal angles (θ) can be found using the following trigonometric identity:          

cos(\theta) = \frac{B}{L}

\theta = cos^{-1}(\frac{30 cm}{42 cm}) = 44.4^{\circ} = 44^{\circ}

Hence, the two equal angles are 44°.

I hope it helps you!  

3 0
3 years ago
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