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11 months ago

Solve the equation -2x + 14 = 12 for x.

Mathematics

1 answer:

Ilia_Sergeevich [38]11 months ago

5 0

<em>Subtract</em><em> 14 </em><em>from both sides.</em>

<em>Subtract </em><em>14</em><em> from </em><em>12 </em><em>to get </em><em>−2.</em>

<em>Divide both sides by</em><em> −2.</em>

<em>Divide </em><em>−2</em><em> by </em><em>−2</em><em> to get 1.</em>

<h2>Skandar</h2>

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Find the volume of a trough 5 meters long whose ends are equilateral triangles, each of whose

yawa3891 [41]

Answer:

$V=5\sqrt{3}\ m^3$

Step-by-step explanation:

we know that

The volume of a trough is equal to

$V=BL$

where

B is the area of equilateral triangle

L is the length of a trough

step 1

Find the area of equilateral triangle B

The area of a equilateral triangle applying the law of sines is equal to

$B=\frac{1}{2} b^{2} sin(60\°)$

where

$b=2\ m$

$sin(60\°)=\frac{\sqrt{3}}{2}$

substitute

$B=\frac{1}{2}(2)^{2} (\frac{\sqrt{3}}{2})$

$B=\sqrt{3}\ m^{2}$

step 2

Find the volume of a trough

$V=BL$

we have

$B=\sqrt{3}\ m^{2}$

$L=5\ m$

substitute

$V=(\sqrt{3})(5)$

$V=5\sqrt{3}\ m^3$

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3 years ago

What i -5 5/12 written a a decimal

Helen [10]

-5 5/12 =-5.416
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3 years ago

6(2x-11)+15=21 is it correct

Alina [70]

I got 6 for my answer, but I'm not 100% sure if I'm right.

6(2x-11)+15=21
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----- ----
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3 years ago

Read 2 more answers

Isabel’s team won their baseball game and scored 60 points total . If Isabel scored 12 of the points and everyone else scored 8

Studentka2010 [4]

Answer:

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Step-by-step explanation:

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tresset_1 [31]

SR =sin (angle) = opposite leg/ hypotenuse

sin(52) = SR/ 7.6

SR = 7.6 x sin(52)

SR = 5.988 ( round answer as needed.)

QR = cos(angle) = adjacent leg / hypotenuse

Cos(52) = QR/ 7.6

QR = 7.6 x cos(52)

QR = 4.679. ( round answer as needed).

Angle S = 180 - 90 -52 = 38 degrees

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3 years ago