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3 years ago

I dont know how to do thiss can someone help

Mathematics

1 answer:

lesantik [10]3 years ago

3 0

Step-by-step explanation:

REO=RBO=67

BOR=ERO=91

REB=REO-BE0=67-32=35

RYE=180-ERO-REB=180-91-35=54

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Lines sand tare perpendicular. If the slope of line sis 5, what is the slope of line t?

Sveta_85 [38]

Answer:

-1/5

Step-by-step explanation:

Perpendicular lines have slopes that are the opposite reciprocal of one another.

The slope of line t is the opposite reciprocal of the slope of line s:

slope of t = -1/(slope of s)

slope of t = -1/5

6 0

3 years ago

Find the angles between -pi and pi that satisfy: (−√3) sin(v)+cos(v)=√3

MAXImum [283]

Observe that

$\sin\left(\dfrac\pi6-v\right)=\sin\dfrac\pi6\cos v-\cos\dfrac\pi6\sin v=\dfrac12\cos v-\dfrac{\sqrt3}2\sin v$

In the original equation, divide both sides by $\dfrac12$ :

$-\sqrt3\sin v+\cos v=\sqrt3\implies\dfrac12\cos v-\dfrac{\sqrt3}2\sin v=\dfrac{\sqrt3}2$

$\implies\sin\left(\dfrac\pi6-v\right)=\dfrac{\sqrt3}2$

Next,

$\sin x=\dfrac{\sqrt3}2\implies x=\dfrac\pi3+2n\pi,x=\dfrac{2\pi}3+2n\pi$

where $n$ is any integer. Then

$\sin\left(\dfrac\pi6-v\right)\implies v=-\dfrac\pi6-2n\pi,v=-\dfrac\pi2-2n\pi$

Fix $n=0$ to ensure $-\pi$ , so that

$v=-\dfrac\pi6,v=-\dfrac\pi2$

3 0

3 years ago

Find the diameter of a circle whose circumference is 74cm

jenyasd209 [6]

Answer:

≈ 24 cm

Step-by-step explanation:

Hi there !

c = 2πr } => c = πd => d = c/π

2r = d

replace c ; π

π =3.14

d = 74cm/3.14

= 23.5668

≈ 24 cm

Good luck !

4 0

3 years ago

At a real estate agency, an agent sold a house for $336000. The commission rate is 5.5% for the real estate agency and the co

Romashka-Z-Leto [24]

Answer: no did

Step-by-step explanation:

bwhehe

8 0

3 years ago

Solve the system of equations. x+2y=6; 3x-14y=8 please help

ira [324]

Let x = 6 = 2y so
3(6 - 2y) + 14y = 8 so
18 - 6y + 14y = 8 so
8y = -10 and
$y = \frac{ - 10}{8} = - \frac{5}{4} \\ \\ since \: x = 6 - 2y \\ 6 - 2( \frac{ - 5}{4}) = x \: so \\ x = 6 + \frac{10}{4} = \frac{24}{4} + \frac{10}{4} = \frac{34}{4} = \frac{17}{2}$

8 0

3 years ago