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3 years ago

Please help look at the picture....

Mathematics

1 answer:

Rashid [163]3 years ago

7 0

X6 , x6 , x6 , x6 , x6

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Can someone Plz help me on these quick

AysviL [449]

The angle sum of quadrilateral is 360 so just 360 - 120- 48 - 92 so the fourth angle should be 100°
the area of triangle is base X height /2 so the answer is 6 x 8 /2 = 24

5 0

3 years ago

What is the value of x? x= -8 2x + 5 – įx = 3 O x = 0.x = -2 0 x = 1/2 x = 8

Dafna11 [192]

Dude doesn’t x basically equal 8 X=8 ? Or am I just wrong

4 0

3 years ago

Tg75º Can someone explain how this works

vovikov84 [41]

The tangent of 75 maybe? Depending on calculator tangent button then 75 or vice versa

3 0

3 years ago

Find the angle between the given vectors to the nearest tenth of a degree.

saul85 [17]

Answer:

Step-by-step explanation:

Given

u = <6, -1>

u = 6i-j

and

v=<7,-4>

v=7i-4j

The formula for angle is:

Let x be the angle

$cos\ x = \frac{u.v}{||u||.||v||}$

where ||u|| is the length and u.v is the dot product or scalar product of both vectors

So,

$||u|| = \sqrt{(6)^2+(-1)^2}\\ = \sqrt{36+1}\\ = \sqrt{37}\\ ||v||=\sqrt{(7)^2+(-4)^2}\\ = \sqrt{49+16}\\ = \sqrt{65}\\$

$u.v = u_1u_2+v_1v_2\\= (6)(7)+(-1)(-4)\\=42+4\\=46$

$cos\ x=\frac{46}{\sqrt{37}\sqrt{65}} \\= \frac{46}{\sqrt{2405} }\\Can\ also\ be\ written\ as:\\= \frac{46}{\sqrt{2405} } * \frac{\sqrt{2405} }{\sqrt{2405}} \\=\frac{46\sqrt{2405} }{2405}$

The calculated angle will be in radians. To find the angle in degrees:

$x = \frac{180}{\pi} cos^{-1} (\frac{46\sqrt{2405} }{2405})\\x = 20.282\\x= 20.3\\$

Hence Option A is correct ..

6 0

4 years ago

The area of circle B is 144 pi ft². Find the circumference of circle B.

Sonbull [250]

Circumference = square root (Area * 4 * PI)
circumference = square root ( 452.3893421169 * 4 * PI )
circumference = square root ( 5,684.8921350275)
circumference = 75.3982236862

8 0

3 years ago

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