Question

please answer both...... it's urgent please​

Answer 1

Step-by-step explanation:

1)Given that:

(-x)+(-5)+(-y)

=>-x-5-y

=>-(x+y+5)

(-x)+(-5)+(-y)=-(x+y+5)

2)Given that:2:5::4:x

Product of extremes=2×x=2x

Product of means=5×4=20

If the numbers are in the proportion then the product of extremes=product of means

=>2x=20

=>x=20/2

=>x=10

The value of x=10

Answer 2

Answer:

b.-x-5-y

c.2x=5×4

x=5×4/2

x=5×2

x=10

Step-by-step explanation:

hope it helps you...