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3 years ago

8

PLSSS ANSWER!!!!!!!!!!!!

1 answer:

Brums [2.3K]3 years ago

5 0

Look at the picture.

The formula of an area of a triangle:

$A_\Delta=\dfrac{1}{2}ab\sin\alpha$

In the equilateral triangle, the measures of all angles are the same and equal to 60°.

Therefore your answer is:

$\dfrac{1}{2}aa\sin(60^o)=\dfrac{1}{2}a^2\sin(60^o)$

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The temperature in Newcastle in winter on a specific day 8°c. By midnight the temperature had dropped to by 12°c . Determine the

Oksi-84 [34.3K]

Answer:

-4 degrees c

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

Well, 8-12=-4

So the answer is -4 degrees c

(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥

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3 years ago

The population of a city is 218720.

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Correct Answer is 205,857

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3 years ago

What is f(-5) if f(x) = |2x-1| + 10?

Alex777 [14]

Substitute x = -5
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8 0

2 years ago

The width of a rectangle is 7 inches less than its length. The area of the rectangle is 120 square inches. Solve for the dimensi

kramer

width= 8

Length= 15

(8x15= 120 and 8 is 7 less than 15)

8 0

3 years ago

A quadrilateral has two angles that measure 222° and 81°. The other two angles are in a ratio of 6:13. What are the measures of

hram777 [196]

$\sf\huge\underline{\star Solution:-}$

$\rightarrow$ <u>Ratio of two angles are 6:13.</u>

So, let the one angle be $\sf{6x}$ and another be $\sf{13x.}$

As we know that,

Sum of all interior angles of a quadrilateral = $\sf\pink{360°.}$

So let's sum up the given angles,

$\rightarrow$ $\sf{222°+81°+6x+13x \:=\: 360°}$

$\rightarrow$ $\sf{303+19x \:=\: 360°}$

$\rightarrow$ $\sf{19x \:=\: 360-303}$

$\rightarrow$ $\sf{19x \:=\: 57}$

$\rightarrow$ $\sf{x \:=\: \frac{19}{57}}$

$\rightarrow$ $\sf{x \:=\: 3}$

Hence, $\sf{x \:=\: 3}$

So, First angle $\sf{= \:6x\: = \:6×3 \:=}$ $\sf\purple{18°.}$

Second angle $\sf{= \:13x\: = \:13×3 \:=}$ $\sf\purple{39°.}$

_________________________________

Hope it helps you:)

3 0

2 years ago