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Elan Coil [88]
3 years ago
8

In the diagram, what is the value of x? A. 144° B. 28° C. 5° D. 36°

Mathematics
1 answer:
In-s [12.5K]3 years ago
4 0
X+4x = 180
5x = 180
x =180/5
x = 36

answer
D. 36
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Right answers only will give brainliest!!!
vladimir2022 [97]

Answer:

10.7 cm^2

Step-by-step explanation:

First find the area of the base

A = 1/2 *2*1.7

A =1.7

Then find the area of one of the sides

A = 1/2 (2*3)

A = 3

There are 3 sides and they are identical

Multiply one of the sides by 3

3*3=9

Add the sides and the base together

9+1.7

10.7 cm^2

4 0
3 years ago
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-11 3(4-5a)=? -11 12-15a =1-15a
den301095 [7]
Answer = a=12/7=1.714
6 0
3 years ago
Please help!! :D<br><br> Find the value of x.
viva [34]

Answer:

{ \tt{ \frac{x}{46}  =  \frac{(39 + 39)}{39} }} \\ x =  \frac{46 \times (39 + 39)}{39}  \\ x = 92

6 0
3 years ago
Read 2 more answers
Please help me with this.
zheka24 [161]

The sin A is equal to 12/13 and the tan (A) is equal to 12/5.

<h3>RIGHT TRIANGLE</h3>

A triangle is classified as a right triangle when it presents one of your angles equal to 90º.  The greatest side of a right triangle is called hypotenuse. And, the other two sides are called cathetus or legs.

The math tools applied for finding angles or sides in a right triangle are the trigonometric ratios or the Pythagorean Theorem.

The Pythagorean Theorem says: hypotenuse^2=(leg_1)^2+(leg_2)^2. And the main trigonometric ratios are:

sin(\beta )= \frac{opposite\;leg}{hypotenuse} \\ \\ cos(\beta )= \frac{adjacent\;leg}{hypotenuse} \\ \\ tan(\beta )= \frac{opposite\;leg}{adjacent\;leg} \\ \\

The question gives cos (A)=5/13. If cos (A) is represented by the quotient between the adjacent leg and the hypotenuse, you have:

adjacent leg=5

hypotenuse=13

Therefore, you can find the opposite leg of A from Pythagorean Theorem, see below.

hypotenuse^2=(leg_1)^2+(leg_2)^2\\ \\ 13^2=5^2+(leg_2)^2\\ \\ 169=25+(leg_2)^2\\ \\ 144=(leg_2)^2\\ \\ leg_2=12

Thus, the opposite leg is equal to 12. Now, you can find sin (A) since:

sin(A)= \frac{opposite\;leg}{hypotenuse}=\frac{12}{13}

Finally, you can find the tan (A) since:

tan(a )= \frac{opposite\;leg}{adjacent\;leg}=\frac{12}{5}

Learn more about trigonometric ratios here:

brainly.com/question/11967894

#SPJ1

7 0
2 years ago
Rewrite square root of -49 -4 in complex number notation please help
SVEN [57.7K]

Note that if i^2=-1 than i=\sqrt{-1},

Also note that \sqrt{ab}=\sqrt{a}\sqrt{b}

So we have,

\sqrt{-49}=\sqrt{-1}\sqrt{49}=\boxed{7i}

and,

\sqrt{-4}=\sqrt{-1}\sqrt{4}=\boxed{2i}

Hope this helps.

r3t40

4 0
3 years ago
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