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2 years ago

Tomorrow I have a geometry test I'm in grade 10, but I don't know anything, please help me.

Mathematics

2 answers:

Gnom [1K]2 years ago

6 0

first go in setting after that click on change after that choose ur country by scrolling up and down

ruslelena [56]2 years ago

3 0

I would suggest using Khan Academy! They have plenty of well-explained videos teaching whatever you need! Good luck on your test :)

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Please answer and use statement reason

masha68 [24]

Answer:

x = 15

Step-by-step explanation:

FD and AC are parallel because both are perpendicular to EB. Angle EDF and Angle DCA are congruent because they are corresponding angles. The measure of Angle DCA is also 3x because congruent angles have the same measure.

Now consider Triangle ACD. Because the sum of all three measures of the angles in a triangle add up to 180°.

x + 8x + 3x = 180°

12x = 180°

12x/12 = 180/12

x = 15

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2 years ago

Diane has 386 coins in her coin collection. There are a total of 112 nickels and 61 dimes in her collection the remaining coins

Dafna1 [17]

Diane has 380 coins (rounded to the nearest 10)

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3 years ago

A new movie theater has a deal for watching lots of movies. You pay 20 dollars at the beginning of the month and then you pay ju

fenix001 [56]

20 + 4 * 9

20 + 36

$56

5 0

2 years ago

In the diagram below, assume that all points are given in rectangular coordinates. Determine the polar coordinates for each poin

Korolek [52]

Step-by-step explanation:

We have cartisean points. We are trying to find polar points.

We can find r by applying the pythagorean theorem to the x value and y values.

$r {}^{2} = {x}^{2} + {y}^{2}$

And to find theta, notice how a right triangle is created if we draw the base(the x value) and the height(y value). We also just found our r( hypotenuse) so ignore that. We know the opposite side and the adjacent side originally. so we can use the tangent function.

$\tan(x) = \frac{y}{x}$

Remeber since we are trying to find the angle measure, use inverse tan function

$\tan {}^{ - 1} ( \frac{y}{x} ) =$

Answers For 2,5

${2}^{2} + {5}^{2} = \sqrt{29} = 5.4$

So r=sqr root of 29

$\tan {}^{ - 1} ( \frac{5}{2} ) = 68$

So the answer is (sqr root of 29,68).

For -3,3

${ -3 }^{2} + {3}^{2} = \sqrt{18} = 3 \sqrt{2}$

$\tan {}^{ - 1} ( \frac{3}{ - 3} ) = - 45$

Use the identity

$\tan(x) = \tan(x + \pi)$

So that means

$\tan(x) = 135$

So our points are

(3 times sqr root of 2, 135)

For 5,-3.5

${5}^{2} + {3.5}^{2} = \sqrt{37.25}$

$\tan {}^{ - 1} ( \frac{ - 3.5}{ - 5} ) = 35$

So our points are (sqr root of 37.25, 35)

For (0,-5.4)

${0}^{2} + { - 5.4}^{2} = \sqrt{} 29.16 = 5.4$

So r=5.4

$\tan {}^{ - 1} (0) = undefined$

So our points are (5.4, undefined)

4 0

3 years ago

1. If you were to describe a translation of triangle ABC,

galben [10]

Answer:

The rule of the translation

Step-by-step explanation:

we know that

In order to describe the translation of the triangle ABC we need to know the rule of translation, i.e. we need to know how many units to the left or to the right the x coordinate will move and how many units up or down the y coordinate will move

3 0

3 years ago

Read 2 more answers

Tomorrow I have a geometry test I'm in grade 10, but I don't know anything, please help me.​

Tomorrow I have a geometry test I'm in grade 10, but I don't know anything, please help me.