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ch4aika [34]
2 years ago
13

Find the measure of the angle in image.

Mathematics
1 answer:
Dimas [21]2 years ago
7 0
Angle BEC equals angle AED because there are vertical angles. so angle BEC=56
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I need help please can someone help
Liono4ka [1.6K]

Answer:

A 6 cm²

Step-by-step explanation:

The formula for the Surface Area of a Rectangle Prism and Square Prism [Cube] is below:

S.A = 2hw + 2bw + 2hb

Since 1 is the length of all edges, and also because all edges are congruent on a cube, you plug in 1 for the <em>height</em>, <em>width</em><em>,</em><em> </em>and<em> </em><em>base</em>:

6 = 2[1][1] + 2[1][1] + 2[1][1]

2 2 2

Or, you can just simply plug in 1 into the formula the exercise gave you and be done with it.

I am joyous to assist you anytime.

8 0
3 years ago
Write the expression in terms of sine only sin 9x cos 9x
Usimov [2.4K]
\sin 2\alpha= 2\sin \alpha\cos\alpha\quad\Rightarrow\quad\sin 9x\cos 9x=\frac{1}{2}\sin 18x
6 0
3 years ago
Find the missing side. Round to<br> the nearest tenth.<br> Х<br> 28°<br> 15<br> x = [?]
Effectus [21]

Given:

The right triangle with base 15 and hypotenuse x.

The measure of angle between base and hypotenuse is 28 degrees.

To find:

The value of x.

Solution:

In a right angle triangle,

\cos \theta=\dfrac{Base}{Hypotenuse}

In the given triangle,

\cos 28^\circ=\dfrac{15}{x}

x=\dfrac{15}{\cos 28^\circ}

x=\dfrac{15}{0.8829476}

x=16.98855

Round the value to the nearest tenth.

x\approx 17.0

Therefore, the value of x is 17.0 units.

8 0
2 years ago
Find the solution to the system of equations.
harina [27]

Answer:

x=2

y=3

Step-by-step explanation:

y=−2x+7

y=5x−7

Set the two equations equal since they are both equal to y

−2x+7 =5x−7

Add 2x to each side

-2x+7+2x = 5x-7+2x

7 = 7x-7

Add 7 to each side

7+7 = 7x-7+7

14 =7x

Divide by 7

14/7 = 7x/7

2 =x

Now find 7

y = 5x-7

y = 5(2) -7

y = 10-7

y = 3

4 0
3 years ago
Read 2 more answers
How do I convert 216 in percentage
AveGali [126]

Answer: 21600

216 as a percentage of certain number x can be calculated by dividing 216 by x, and multiplying the result by 100. For example, 216 as a percentage of 10 = (216 / 10) x 100% = 2160%.

Step-by-step explanation:

6 0
2 years ago
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