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3 years ago

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What is the solution to the equation 13.7y = 6.2y + 30? y = –4 y = –1.5 y = 1.5 y = 4

2 answers:

MariettaO [177]3 years ago

7 0

9514 1404 393

Answer:

y = 4

Step-by-step explanation:

This is a "2-step" equation. Subtract the y-term on the right, then divide by the coefficient of y.

13.7y = 6.2y +30

13.7y -6.2y = 6.2y -6.2y +30 . . . . subtract 6.2y

7.5y = 30 . . . . . simplify

7.5y/7.5 = 30/7.5 . . . . . . divide by 7.5

y = 4 . . . . . . . . . simplify

sammy [17]3 years ago

3 0

Answer:

4

Step-by-step explanation:

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For a regular n-gon:

zalisa [80]

A ) S n = ( n - 2 ) · 180°
b ) The measure of each angle:
α = ( n -2 ) · 180° / n
c ) Sum of all exterior angles: 360°
d ) The measure of each exterior angle:
α 1 = 360° / n
e ) ( n - 2 ) · 180° / n + 360° / n =
= ( 180° n - 360° + 360° ) / n = 180° n / n = 180°
It makes sense because:
α (interior angle)+ α 1 ( exterior angle ) = 180°

3 0

3 years ago

Read 2 more answers

Solve for x in the equation 3x^2-18+5=47<br>

Alecsey [184]

Answer:

$\sqrt{20}$

Step-by-step explanation:

<em> </em><em>Try to leave x alone on the left side</em>

$3x^{2} -18 + 5 = 47$

$3x^{2} -13 = 47$

<em>To leave alone x, add +13 to both sides. Because left side has -13</em>

$3x^{2} -13 + 13 = 47 + 13$

$3x^{2} = 60$

<em>Now x is alone on the left side</em>

$\frac{3x^{2} }{3} = \frac{60}{3}$

$x^{2} = 20$

$\sqrt{x} .\sqrt{x} = x$ <=Rule

So; x= $\sqrt{20}$

Hope this helps ^-^

3 0

3 years ago

When measuring distance 43 peas are approximately equal to 19 beans. How many peas are equal to 133 beans?

nikdorinn [45]

Answer:

301

Step-by-step explanation:

Assuming the proportion holds over longer distances, the ratios can be written ...

peas/beans = p/133 = 43/19

p = 133(43/19) = 301

301 peas are equal to 133 beans.

4 0

3 years ago

Daniel drove 750 miles from his home to Texas. If x represents the number of hours Daniel drove, which expression could be

11111nata11111 [884]

Answer:750/x

Step-by-step explanation:

speed = distance ÷ time

= 750 ÷ x

4 0

3 years ago

Read 2 more answers

And her husband Marc both drive to work. Elena's car has a current mileage (total distance driven) of

Andreas93 [3]

Answer: <em>Yes, It will be equal in 2.2 years </em>

<em> </em>

<em>Step-by-step explanation: </em>

<em> </em>

<em>Hi, to answer this question we have to write an equation for the mileage of Elena and Marc. </em>

<em> </em>

<em>Elena = 15,000+ 23,000x </em>

<em> </em>

<em>Marc= 46,000+ 9,000x </em>

<em> </em>

<em>Wheres x is the number of years </em>

<em> </em>

<em>So, if both have the same mileage </em>

<em> </em>

<em>15,000+ 23,000x = 46,000+ 9,000x </em>

<em> </em>

<em>Solving for x </em>

<em> </em>

<em>23,000x-9,000x =46,000-15,000 </em>

<em> </em>

<em>14,000x = 31,000 </em>

<em> </em>

<em>x = 31,000/14,000 </em>

<em> </em>

<em>x = 2.21 years</em>

<em />

<em />

<u><em>Have a great rest of your Day/Night!</em></u>

<u><em /></u>

<em />

5 0

2 years ago