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2 years ago

Need help asap please

Mathematics

1 answer:

saveliy_v [14]2 years ago

5 0

Answer:

$\displaystyle no$

Step-by-step explanation:

We do not have enough information to use this theorem. We only have one side and two <em>right</em><em> </em><em>angles</em> marked. Hence, you have your answer.

I am joyous to assist you at any time.

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F (x) = -4x² + 10x + 13

Alexus [3.1K]

Answer:

f(7) = -113

Step-by-step explanation:

Hello!

Substitute 7 for x in the equation.

<h3>Evaluate</h3>

f(x) = -4x² + 10x + 13
f(7) = -4(7)² + 10(7) + 13
f(7) = -4(49) + 70 + 13
f(7) = -196 + 70 + 13
f(7) = -113

f(7) is -113.

3 0

1 year ago

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

Goryan [66]

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

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julia-pushkina [17]

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So basically, in the middle of the number line, there's zero.
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