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2 years ago

Solve for X. Pls explain ur answer and I will mark brainliest.

Mathematics

2 answers:

Ede4ka [16]2 years ago

7 0

The sum of all angles of a triangle is equal to 180°

On a isosceles triangle, the base angles are the same.

We add them together 56° + 56° = 112°

To know X, we subtract 112° from the total

180° - 112° = 68°

X = 68°

OR as an equation

56 + 56 + x = 180

112 + x = 180

x = 180 - 112

x = 68

Andrew [12]2 years ago

6 0

Answer:

The answer is D, 68

Step-by-step

this is the Angles Outside a Circle Theorem

(If a tangent and a secant, two tangents, or two secants intersects in the the exterior of a circle, then the measure of the angle formed is one half the difference of the measures of the intercepted arcs.

one circle = 360 degrees

you do not know the other part of the circle

so... 360 - 248 = 112

now you want to divide 112 by two = 68

x = 68 degrees

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Use a linear approximation (or differentials) to estimate the given number. (Round your answer to five decimal places.) 3 217

Soloha48 [4]

Answer:

$f(216) \approx 6.0093$

Step-by-step explanation:

Given

$\sqrt[3]{217}$

Required

Solve

Linear approximated as:

$f(x + \triangle x) \approx f(x) +\triangle x \cdot f'(x)$

Take:

$x = 216; \triangle x= 1$

So:

$f(x) = \sqrt[3]{x}$

Substitute 216 for x

$f(x) = \sqrt[3]{216}$

$f(x) = 6$

So, we have:

$f(x + \triangle x) \approx f(x) +\triangle x \cdot f'(x)$

$f(215 + 1) \approx 6 +1 \cdot f'(x)$

$f(216) \approx 6 +1 \cdot f'(x)$

To calculate f'(x);

We have:

$f(x) = \sqrt[3]{x}$

Rewrite as:

$f(x) = x^\frac{1}{3}$

Differentiate

$f'(x) = \frac{1}{3}x^{\frac{1}{3} - 1}$

Split

$f'(x) = \frac{1}{3} \cdot \frac{x^\frac{1}{3}}{x}$

$f'(x) = \frac{x^\frac{1}{3}}{3x}$

Substitute 216 for x

$f'(216) = \frac{216^\frac{1}{3}}{3*216}$

$f'(216) = \frac{6}{648}$

$f'(216) = \frac{3}{324}$

So:

$f(216) \approx 6 +1 \cdot f'(x)$

$f(216) \approx 6 +1 \cdot \frac{3}{324}$

$f(216) \approx 6 + \frac{3}{324}$

$f(216) \approx 6 + 0.0093$

$f(216) \approx 6.0093$

6 0

3 years ago

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Scilla [17]

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jok3333 [9.3K]

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2 years ago

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kolbaska11 [484]

Answer:

Step-by-step explanation:

screen shot attached