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liberstina [14]
3 years ago
13

What is the value of x?

Mathematics
2 answers:
artcher [175]3 years ago
8 0
By Sine Rule,

x/sin30° = 8/sin90°

x/0.5 = 8/1

So x = 4.
leva [86]3 years ago
3 0

Answer:

4

Step-by-step explanation:

sin = opposite side / hypoteneuse side

opposite side = x

hypoteneuse side = 8

thus; sin 30° = x/8

x = sin 30°×8

  = 0.5 × 8

  = 4

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Umnica [9.8K]
It is x=0 and x=-4/3
8 0
3 years ago
Read 2 more answers
How do you solve for x in this equation. 4^x-3=18
Lostsunrise [7]

Answer:

x = ln(21)/ ln(4), Decimal Form: 2.19615871

Step-by-step explanation:

This is pretty complex math for middle school with logarithms and what not. Make sure you typed the problem in correctly. If you did, I guess that's your answer.

3 0
3 years ago
What Is the Answer To number 1 ?
DochEvi [55]

Answer: 4 apples for $3.64


Step-by-step explanation:

The best buy is going to be the one that costs the least. To figure this out, you divide the number of apples by the price. (do not round)

4/3.64=1.09

9/8.01=1.23

14/12.43=1.12

24/21.12=1.13

As you can see, the 4 apples for $3.64 is the better choice since the number is the least.

5 0
3 years ago
Karina uses the system of equations below to compare the monthly utility costs in July and December for electricity, x, and natu
fiasKO [112]

Answer:

d. The cost of natural gas (y) = $0.83 per unit

Step-by-step explanation:

The explanation is shown below:-

the equation of system is:

750x + 17y = 141.61  (i)        

300x + 30y =75.90 (ii)

as x indicates the cost of electricity and y indicates the costs of natural gas.

we will solve the both equation with the help of multiplication for (i) by 30 and for (ii) 75

30\times (750x  + 17y) 30\times 141.61\\\\

after solve the above equation we will get

22,500x + 510y = 4248.3 (iii)

75\times (330x + 30y) = 75\times 75.90

after solve the above equation we will get

22500x + 2250y = 5692.5 (iv)

After deducting the equation (iii) and (iv) we will get

1740 y = 1444.2

After Dividing by 15 both sides,

116y = 96.28

So, Katrina simplify the above system using linear equation and reach at the equation that is

116 y = 96.28

By Division property of equality defines that divide the equal no. of both sides of an equation:

by  Division of 116 to both sides of an equation, to get y:

\frac{116y}{116} = \frac{96.28}{116}

y = 0.83

So, the natural gas is $0.83 per unit

7 0
3 years ago
What is the equation of the line that passes through the points 15, nine and -2, nine
olasank [31]

Answer:

y=9

Step-by-step explanation:

y=mx+c

gradient of a horizontal line is 0

y=0x+9

y=9

5 0
3 years ago
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