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Luda [366]
3 years ago
6

Solve 4x+5y=13 for y

Mathematics
2 answers:
mr Goodwill [35]3 years ago
5 0

Answer:

y =  -  \frac{4}{5} x + 2 \frac{3}{5}

Step-by-step explanation:

To solve for y, we have to arrive at the equation of y= ____.

4x + 5y = 13

<em>-4x</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>:</em>

5y = - 4x + 13

<em>Divide</em><em> </em><em>by</em><em> </em><em>5</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>:</em>

<em>y =  -  \frac{4}{5} x +  \frac{13}{5}  \\ y =  -  \frac{4}{5} x + 2 \frac{3}{5}</em>

barxatty [35]3 years ago
4 0

the answers is y equals 8x

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= 4. The sum of Ben's and David's ages is 62 yrs now. Five years from now David will be twice as old as Ben. How old is Ben now?
ki77a [65]

The age of ben and david is 24 and 38 years.

According to the statement

we have to find the age of the Ben now.

So,For this purpose, we know that the

One application of linear equations is what are termed age word problems. When solving age problems, generally the age of two different people (or objects) both now and in the future (or past) are compared.

From the given information:

The sum of Ben's and David's ages is 62 yrs now

And

Five years from now David will be twice as old as Ben.

Let the ben age is x

and the david age is y.

So, from given information:

x+y = 62  -(1)

5 years from now,

y = 2x  -(2)

put (2) in the (1) then

x+y = 62 -5

x+2x = 57

3x = 57

x = 19.

And the age of davud become

y = 2(19)

y = 38 years

So, five years from now the age of ben is 19 and david is 38 years.

And now the age of the ben and age of david is

Age of ben now = 19+5

Age of ben now = 24.

Age of david now  = 62 -24

Age of david = 38.

So, The age of ben and david is 24 and 38 years.

Learn more about age word problems here

brainly.com/question/13818690

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5 0
1 year ago
Tickets for a play cost $11 for an adult and $80 for a child on Saturday night 300 tickets were sold the amount of money collect
Ratling [72]

Answer:

120 adults tickets were sold

8 0
2 years ago
Andrea
maksim [4K]

Answer:

a. Andrea is incorrect

b. By solving for x, we find that x does not equal 8, but it is equal to 7.

Step-by-step explanation:

8+4=2(x-1)

8+4=2x-2

12=2x-2

14=2x

x=7

4 0
2 years ago
V=u+ 2at
ExtremeBDS [4]

Answer:

the answer is A 579m/s

Step-by-step explanation:

Given,

v=?    u=3m/s a=4m/s^2 and  t=72

Now,

v=u+2at

=3+2{4(72)}

= 3+2(288)

=3+576

=579m/s

4 0
2 years ago
Read 2 more answers
64^-3x-3*64+22=38 solve for x
yawa3891 [41]

x

=

−

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9

x

=

-

8

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Decimal Form:

x

=

−

0.

¯

8

7 0
3 years ago
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