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julsineya [31]
4 years ago
15

Please help :( : Solve the equation 3x + 5y = 15 for y

Mathematics
1 answer:
Gala2k [10]4 years ago
6 0

Answer:

y = -3/5 x +3

Step-by-step explanation:

3x + 5y = 15

Subtract 3x from each side

-3x+3x + 5y = -3x+15

5y = -3x+15

Divide each side by 5

5y/5 = -3x/5 +15/5

y = -3/5 x +3

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Convert fraction to a decimal 3/8
Ivanshal [37]

In order to convert a fraction into a decimal, you can do one of two ways. I'll do the manual way, first since that's probably what your teacher would prefer.

First, find something that will multiply in the denominator that will equal 10,100,1000.

In this case, it will be 1,000.

1,000 ÷ 8 = 125.

So, you will  multiply both the numerator and the denominator by 125.

3 x 1,000 = 375

8 x 125 = 1,000

Now, you have a BIG fraction of 375/1,000 but it's OKAY! Why? You're almost done.

Take your numerator of 375. Since your denominator has 3 zeros in it, you'll be moving your decimal 3 places to the right (from the imaginary decimal in front of the 3). So, we'll have 0.375.

So, your decimal of 3/8 is 0.375.

____________________________________________________

Now, for the easiest way!

You will simply divide 3 ÷ 8 = 0.375

5 0
4 years ago
Solve x:<br> 6 - x/2 = 10<br> --Please Help! Maths Homework Due In For Monday! Xx
ratelena [41]

6 - \frac{x}{2}= 10  Subtract 6 on both sides

6-\frac{x}{2}-6=10-6

-\frac{x}{2}= 4

Multiply -2 on both sides to get "x" by itself

-\frac{x}{2} (-2) = 4(-2)


x = -8

4 0
3 years ago
Read 2 more answers
Point A is (3,-8) and M is (5,-2.5) what are coordinate of B
Zolol [24]

Answer:

B is (7,3)

Step-by-step explanation:

Solve for the x-coordinate:

(3+x)/2=5

3+x=10

x=7

Solve for the y-coordinate:

(-8+y)/2=-2.5

-8+y=-5

y=3

So the coordinates of B are (7,3)

7 0
3 years ago
Factor the expression w^2+18w+77
scoundrel [369]

Answer:


Step-by-step explanation:

Factor  

w

2

+

18

w

+

77

using the AC method.

Tap for fewer steps...

Consider the form  

x

2

+

b

x

+

c

. Find a pair of integers whose product is  

c

and whose sum is  

b

. In this case, whose product is  

77

and whose sum is  

18

.

7

,

11

Write the factored form using these integers.

(

w

+

7

)

(

w

+

11

)



3 0
3 years ago
Solve for h: 45 = h+ 19
Anit [1.1K]

Answer:

h = 26

Step-by-step explanation:

45 = h + 19

45-19 = h

26 = h

3 0
3 years ago
Read 2 more answers
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