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JulsSmile [24]
4 years ago
11

Is 3x+ 5= Y proportional?

Mathematics
2 answers:
professor190 [17]4 years ago
7 0
no ........ its not proportional
miv72 [106K]4 years ago
7 0
The answer is no, not proportional
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please help :{ brainliest if you can get it right and I need you to prove why your answer is correct, thanksss​
beks73 [17]

Answer:

The Value of a=\frac{15}{4}.

Step-by-step explanation:

We have Named the figure please find the attachment for your reference.

Given:

PR = y

QR = a

RS = b

PS = z

PQ = x

QS = 15

∠P = 90°

∠R = 90°

∠Q = 60°

∠S = 30°

We need to find the Value of 'a'.

Solution:

Now we know that:

In Δ PQS

∠P = 90°

∠S = 30°

Now we know that;

sin\ \theta = \frac{opposite\ side}{Hypotenuse}

sin \ S= \frac{PQ}{QS}

Substituting the given values we get;

sin\ 30\°=\frac{x}{15}

Now we know that;

sin\ 30\° = \frac12

So we can say that;

\frac{1}{2}=\frac{x}{15}\\\\x=\frac{15}{2}

Now In Triangle PQR.

∠R = 90°

∠Q = 60°

So we can say that;

Cos \theta = \frac{adjacent \ Side}{Hypotenuse}\\

Cos\ Q = \frac{QR}{PQ}

Substituting the given values we get;

cos 60\°= \frac{a}{x}

Now we know that;

cos 60\°= \frac12

x=\frac{15}{2}

So substituting the values we get;

\frac{1}{2}=\frac{a}{\frac{15}{2}}

By Using Cross Multiplication we get;

a= \frac{1}{2}\times\frac{15}{2}\\\\a=\frac{15}{4}

Hence The Value of a=\frac{15}{4}.

6 0
3 years ago
While traveling in Canada, a police officer pulls you over for speeding. The posted speed limit is 100
torisob [31]

Answer:

Speeding at 160.934 km/hr

Step-by-step explanation:

1 mile = 1.609344 kilometers

1.609344 * 100 = 160.934 kilometers

8 0
3 years ago
Read 2 more answers
3 inches to the nearest 1/2 inch
DaniilM [7]

Answer:

6

Step-by-step explanation:

8 0
4 years ago
Find the value of k if the line y = kx + 2 goes through the point<br><br> A (-2, 4)
viktelen [127]

Answer:

k=-1

Step-by-step explanation:

check is the equation goes through the point (-2,4)

4=-(-2)+2

4=2+2

4=4

this line goes through the point (-2,4)

Hope this helps UwU...

7 0
3 years ago
Apply the distributive property:
Aleonysh [2.5K]
Here you go, this should be right

5 0
3 years ago
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