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3 years ago

How do you solve this !!??(x+y+2)(y+1)

Mathematics

1 answer:

Elena-2011 [213]3 years ago

6 0

Answer:

Step-by-step explanation:

(x+y+2)(y+1)

Opening the brackets

xy + x + y^2 + y +2y +2

y^2 +xy + 3y + x +2

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x and y are natural numbers, and y≠1. It is known that (7x+1) is divisible by y and (8x+3) is also divisible by y. Find y.

mezya [45]

Given : x and y are natural numbers . As (7x+1) is divisible by y and (8x+3) is also divisible by y.

To find: y

Solution: Since (7 x+1) is divisible by y and (8 x+3) is also divisible by y.

1.As x,y are natural numbers, So

→8 x+3>7 x+1

→8 x+3=7 x+1+k y where k is any natural number.-------(1)[reason: 4 is divisible by 2 and 6 is also divisible by 2, so 6=4+2k]

→8 x-7 x+3-1=k y

→k y= x+2

If k=1, then y=x+2.

So value of y is x+2.As y≠1, so for different values of x there are different values of y. so x=1,we get y=3, as this is linear equation in one variable.

→y is an odd natural number,=[3,5,7,9,.....]≠1

4 0

3 years ago

Find x for − 1/5(x − 4) = −2 i need help asap please help

irina1246 [14]

-1/5x + 1 = -2
-1/5x= -3
x= 15

Mark Brainly pls

6 0

3 years ago

Ralph Kramer ingested $11,000 in a certificate of deposit for 1 year. The certificate earns interest at an annual rate of 5.75 p

lozanna [386]

Answer:

5.91%

Step-by-step explanation:

We are given an investment deposited fro 1 year compounded daily at an annual interest rate of 5.75%.

Compounding period per year, n: 365

The effective annual yield can be calculated by the following formula:

Effective Annual Yield = $(1+\frac{r}{n})^{n}-1$

where n = 365

Interest rate, r= 5.75% = 0.0575

$=(1+\frac{0.0575 }{365})^{365}-1$

= 0.059

The annual effective yield is 5.91%

7 0

3 years ago

Given the equation y = 4x - 3.A) If x increases by 1 unit, what is the corresponding change in y? B) If x decreases by 5 units,

DedPeter [7]

Answer:

A) y will increase by 4 unit.

B) y will decrease by 20 units

Step-by-step explanation:

Given equation that shows relation between x and y.

$y=4x-3$

A) If x is increased by 4 units

New value of y = $4(x+1)-3$

$=4x+4-3$

$=4x+1$

So, change in y = new value of y- original value of y

$=4x+1-(4x-3)$

$=4x+1-4x+3$

$=4$

Thus, the value of y will be increased by 4 units.

B) If x is decreased by 5 units

New value of y = $4(x-5)-3$

$=4x-20-3$

$=4x-23$

So, change in y = new value of y- original value of y

$=4x+1-(4x-3)$

$=4x-23-(4x-3)$

$=4x-23-4x+3$

= -20

Thus, the value of y will be decreased by 20 units.

7 0

3 years ago

The points in the table lie on a line. What is the slope?

kati45 [8]

Answer: The slope would be y=1/2+3

Step-by-step explanation:

I'm pretty sure that's right I haven't had to find slope in so long xd

5 0

3 years ago