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2 years ago

Find the area and perimeter.

Mathematics

1 answer:

lara [203]2 years ago

8 0

Answer:

Step-by-step explanation:

Perimeter of triangle = 4x - 3 + x + 9 + 8

= <u>4x + x</u> -<u> 3 + 9 + 8</u>

= 5x + 14

Area = $\frac{1}{2}*base *height$

$= \dfrac{1}{2}*8*3x\\\\= 4 * 3x\\\\= 12x$

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Two lines are parallel if and only if their slopes are equal. Write two if-then statement that are implied by this thesis statem

Veronika [31]

If and only if (iff) statements are true if only both statements are true of both are false, its double implied.
Here are the implications:
If two lines are parallel then their slopes are equal.
If the slopes of two lines are equal then they are parallel.

5 0

3 years ago

Use the expression below to complete the following tasks. (3a2 - 5ab + b2) - (-3a2 + 2b2 + 8ab) What is the additive inverse of

Basile [38]

Remember that the additive inverse are two equal numbers (or expressions) but with different signs.
We have then, that according with the coment below:
(3a2 - 5ab + b2) - (-3a2 + 2b2 + 8ab)
the additive inverse is:
(3a2 - 2b2 - 8ab) Note that is the same expression that
(-3a2 + 2b2 + 8ab)
but with different signs.
Answer:
the additive inverse of the polynomial being subtracted is
(3a2 - 2b2 - 8ab)

6 0

3 years ago

Read 2 more answers

Find the missing side of the triangle. Round your answer to the nearest tenth if necessary.

kenny6666 [7]

Answer:

Step-by-step explanation:

pythagoras theorem

a^2+b^2=c^2

12^2+x^2=13^2

144+x^=169

x^2=169-144

x= $\sqrt{25$

x=5 km

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3 years ago

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Which of the following equations represents the graph shown?

melomori [17]

Answer: Last option.

Step-by-step explanation:

The equation of the line in slope-intercept form is:

$y=mx+b$

Where m is the slope and b the intersection with the y-axis.

You can observe in the graph that the line passes through the origin, then:

$b=0$

Choose two points of the line and calculate the slope with:

$m=\frac{y_2-y_1}{x_2-x_1}$

Points: (2,3) and (-2,-3)

Substitute values, then the slope is:

$m=\frac{-3-3}{-2-2}=\frac{-6}{-4}=\frac{3}{2}$

Substituting "m" and "b" into $y=mx+b$ , you get that the equation is:

$y=\frac{3}{2}x$

This can be written as:

$f(x)=\frac{3}{2}x$

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3 years ago

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What is the negative angle that is coterminal with 120∘120∘. write your answers in radians?

weeeeeb [17]

To find a positive and a negative angle coterminal with a given angle, you can add and subtract 360°.

$120^o-360^o=-240^o=-\dfrac{240\pi}{180}=-\dfrac{4\pi}{3}$

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3 years ago