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3 years ago

Triangle GCH is similar to triangle DCE. Find CH

Mathematics

1 answer:

soldier1979 [14.2K]3 years ago

5 0

Answer:

x = 65

Step-by-step explanation:

if two triangles are similar then we can use the similarity ratio to find the length of CH

60/156 = x/169 cross multiply expressions

156x = 10140 divide both sides by 156

x = 65

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Ivenika [448]

correct Option is B i.e, $72x^2+288x^2-216x$ whose simplified form is: $360x^2-216x$

Step-by-step explanation:

We need to solve the expression:

$2[(6x)(6x)]+4[(12x - 9)(6x)]$

Solving:

$2[(6x)(6x)]+4[(12x - 9)(6x)]\\=2[36x^2]+4[(12x*6x)-(9*6x)]\\=72x^2+4[72x^2-54x]\\=72x^2+288x^2-216x\\=360x^2-216x$

So, correct Option is B i.e, $72x^2+288x^2-216x$ whose simplified form is: $360x^2-216x$

Keywords: Surface area of the rectangular prism

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3 years ago

Your laptop battery will last for exactly 6 hours before it needs to be recharged.You have had your laptop on for

diamong [38]

Answer:

$3\frac{1}{2} hours$

Step-by-step explanation:

You have to subtract 2 1/2 from 6 and that will equal 3 and 1/2.

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3 years ago

I need graph help plz

Likurg_2 [28]

Answer:

Step-by-step explanation:

Part A

x-intercepts of the graph → x = 0, 6

Maximum value of the graph → f(x) = 120

Part B

Increasing in the interval → 0 ≤ x ≤ 3

Decreasing in the interval → 3 < x ≤ 6

As the price of goods increase in the interval [0, 3], profit increases.

But in the price interval of (3, 6] profit of the company decreases.

Part C

Average rate of change of a function 'f' in the interval of x = a and x = b is given by,

Average rate of change = $\frac{f(b)-f(a)}{b-a}$

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2 years ago

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diamong [38]

Answer:

Step-by-step explanation:

rise over run. the slope is -3 for 10.

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3 years ago

Read 2 more answers

I need help on finding the area of a parallelogram

Hoochie [10]

Answer:

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Step-by-step explanation:

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3 years ago