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Airida [17]
3 years ago
6

Classify the following triangle. Check all that apply.

Mathematics
1 answer:
LenaWriter [7]3 years ago
6 0

Answer:

isosceles

Step-by-step explanation:

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Please help evaluate the expression (-1/4+2.875)÷(-2/3). Write your answer as a simplified mixed number,or as a decimal.show you
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I believe the answer will be -3.9375
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The measure of a vertex angle of an isosceles triangle is 120° and the length of a leg is 8 cm. Find the length of a diameter of
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ANSWER

The length of a Diameter is 3.714

EXPLANATION

The circumscribed triangle is shown in the attachment.

We use the cosine ratio to find the altitude of the isosceles triangle.

\cos(60 \degree)  =  \frac{altitude}{hypotenuse}

\cos(60 \degree)  =  \frac{altitude}{8}

Altitude =8cos(60°)

Altitude=4cm

Let the upper half of the altitude be y cm.

Then the radius of the circle is (y-4)cm

The upper radius meets the tangent at right angles.

From the smaller right triangle,

\sin(60 \degree)  =  \frac{4 - y}{y}

y\sin(60 \degree)  = 4 - y

y\sin(60 \degree)   + y= 4

(\sin(60 \degree)   + 1)y= 4

y=  \frac{4}{\sin(60 \degree)   + 1}

y = 16 - 8 \sqrt{3}

y=1.857

The diameter is 2y

d = 32 - 16 \sqrt{3}

=2(1.875)

The length of a Diameter is 3.714

7 0
3 years ago
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A quadratic equation x^2-8x+9=0 is rewritten in the form (x-p)^2=q. What are the values of p and q?
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X^2-(2)(x)(4)+16-7=0
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Graph represents the function f (x) = StartFraction 5 minus 5 x squared Over x squared EndFraction?
True [87]

Answer:

The following are the attachment to this question.

Step-by-step explanation:

Given:

\bold{ f (x) = (\frac{5- 5x^2}{x^2})}\\

Simplify:

\bold{ f (x) = (\frac{-5 (x^2-1)}{x^2})}\\\\\bold{ f (x) = (\frac{-5(x+1)(x-1)}{x^2})}\\

The graph representation can be described as follows:

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3 years ago
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Sinplify 12-3[2x-5(x-1)]
Inessa05 [86]

12-3[2x-5(x-1)]

12-3[2x-5x+5]

12-3[-3x+5]

12+9x-15

9x-3

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