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Ira Lisetskai [31]
3 years ago
7

How to solve y for this problem

Mathematics
1 answer:
ser-zykov [4K]3 years ago
7 0
You do \frac{sin(y)}{2} = \frac{sin30}{what you got for x} and then cross multiply and simply it.

(what you got for x)sin(y)=2sin30
divide (what you got for x) to both side
you should get something like sin(y)= \frac{2sin30}{what you got for x}
then just use a calculator and do sin^{-1} ( \frac{2sin30}{what you got for x} )
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Referring to the Fig. in Question #40, find the unknown<br> length Y.
icang [17]

Answer:

tan30°=7/x

\frac{1}{ \sqrt{3} }  =  \frac{7}{x }  \\ x = 7 \sqrt{3}

cos30°=x/y

\frac{ \sqrt{3} }{2}   =  \frac{7 \sqrt{3} }{y}  \\  \\ 7 \sqrt{3}  \times 2 =  \sqrt{3}  \times y \\ \frac{7 \sqrt{3 }  \times 2}{ \sqrt{3} }  = y \\7 \times 2 = y \\ 14 = y

tell me if it's wrong.

7 0
2 years ago
Read 2 more answers
Solve the equation.
inysia [295]

The answer is x=-80.

First subtract 4 from both sides.

-6=\frac{x}{8}+4

-6-4=\frac{x}{8}+4-4

-10=\frac{x}{8}

Multiply 8 on both sides to isolate x.

-10·8=\frac{x}{8*8}

-80=x

5 0
4 years ago
Please help ASAP<br> Please help ASAP<br> Please help ASAP<br> Please help ASAP
Alex_Xolod [135]

The volume of the rectangular box is 12 cubic inches

<h3>Volume of a box</h3>

The formula for measuring the volume of a rectangular box is expressed as:

V = lwh

l is the length

w is the width

h is the height

Given the following

l = 2in

w = 3in

h = 2in

Substitute

V = 2* 3 * 2

V = 12 cubic inches

Hence the volume of the rectangular box is 12 cubic inches

Learn more on volume of. rectangular box here: brainly.com/question/8880159

#SPJ1

7 0
2 years ago
I need this pls helpp
alexandr1967 [171]

Answer:

m∠7 = 63 degrees

m∠8 = 117 degrees

m∠9 = 63 degrees

Step-by-step explanation:

When two lines intersect at a point, then they formed 2 pairs of vertically opposite angles and 4 pairs of linear angles

  • The vertically opposite angles are equal in measures
  • The linear angles have a sum of 180°

In the given figure

∵ There are two lines intersected at a point

∴ The angle of measure 117° and ∠8 are vertically opposite angles

∴ ∠7 and ∠9 are vertically opposite angles

∴ The angle of measure 117° and ∠7 are linear angles

∵ The vertically opposite angles are equal in measures

∴ The angle of measure 117° and ∠8 are equal in measures

∴ m∠8 = 117°

∵ The sum of the measures of the linear angles is 180°

∴ m∠7 + 117° = 180°

→ Subtract 118 from both sides

∵ m∠7 + 117 - 117 = 180 - 117

∴ m∠7 = 63°

∵ m∠7 = m∠9 ⇒ proved up

∴ m∠9 = 63°

3 0
3 years ago
You and six friends play on a soccer team. a sponsor paid $100 for the league fee, x dollars for each player's t/shirt and $68.2
Ratling [72]
100+x (s)+68.25(t)=a
S=shirts
T=trophies
A=amount paid
4 0
3 years ago
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