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photoshop1234 [79]
3 years ago
7

Find the value of x,rounded to the nearest tenth

Mathematics
2 answers:
sineoko [7]3 years ago
6 0
X = 18/sin35° = 18/0.5736 ≈ 31.4 

Answer: C.
ziro4ka [17]3 years ago
6 0

Answer:

C. 31.4

Step-by-step explanation:

We have been given a right triangle. We are asked to find the value of x to nearest tenth.

We can see that x is hypotenuse and side with 18 units is opposite side to angle 35 degrees.

We know that sine relates opposite side right triangle to hypotenuse.

\text{sin}=\frac{\text{Opposite}}{\text{Hypotenuse}}

\text{sin}(35^{\circ})=\frac{18}{x}

x=\frac{18}{\text{sin}(35^{\circ})}

x=\frac{18}{0.573576436351}

x=31.382042

x\approx 31.4

Therefore, the value of x is 31.4 and option C is the correct choice.

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Solve the system by substitution 4x+4y= 12 and x+2y=11
Reika [66]

Answer:

x = -5 and y = 8

Step-by-step explanation:

To solve the system by substitution, solve one equation for a variable. Then substitute the equation into the other equation.

x + 2y = 11 becomes x = 11 - 2y

Substitute x = 11 -2y into 4x + 4y = 12.

4(11-2y) + 4y = 12

44 - 8y + 4y = 12

44 - 4y = 12

32 = 4y

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Substitute again with y = 8 into the equation to find x.

x = 11 - 2(8)

x = 11 - 16

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4 0
3 years ago
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AleksAgata [21]

Answer:$920

Step-by-step explanation:

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Plugging in the values of I=$375, P=$1500 and r=5% in the equation I=KPr, the value of k can be calculated. Hence, the formula connecting the three quantities (I,P and r) can be generated.

375 = K (1500×5)

Making k the subject of change,

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Formula connecting the three quantities :I =Pr/20

when P=$2300, r=8%,

I = (2300×8)/20

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3 0
3 years ago
How do I do this? I dont know how to work out his problem
mrs_skeptik [129]

The mom is 36

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irrational

Step-by-step explanation:

pi itself is irrational, so adding something to it makes no difference

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It is going to be 5.57 BTUs per ft^3
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