more math help?

Question

hey people i need more math help please help me again
if you want another ten points cause maybe on the last problem you helped me with ill pick you as best answer and if you give me a good enough answer on this question i might choose you as best answer also then you would have 20 points total but yeah please help me thanks

5=s/-7
9 p/-2<-5

Answer 1

1.
5=s/-7

cross multiply,

5 * (-7) = s

s = -35


2) 9
54 < a

or a > 54

3) p/-2<-5

p < 10

Answer 2

If 5=s/-7 then
multiply both sides of the equation by -7 to get rid of the division, leaving

-35=s

if 9
multiply both sides by 6 to get rid of the division, leaving

5454 (they are the same thing).

If (p/-2) < -5 then
first multiply both sides by 2 to get rid of the division, leaving

-p<-10
then multiply both sides by -1 to get rid of the negatives, leaving p>10

p.s. the points are not what motivates us to answer these - it is more the hope that you will pick up the math you need...and if we can't figure out that 10 plus 10 is 20, do you want us doing your math for you ;) ?

Answer 3

1. 5=s/-7
5*(-7)=s
s=(-35)
2. 9 9*6 5454
3. p/-2<-5
p>-5*-2
p>10

Answer 4

(1)5=s/-7
by cross multiplication
5*(-7)=s*1
therefore s=-35
(2)9 by crossmultiplication
9*6 54 (3)p/-2<-5
by crossmultiplication
p*1<(-5)(-2)
p<10

Answer 5

Cancel division with multiplication (5*-7 = s*-7/-7 = s -- the -7's cancel out, leaving the s by itself where you want it).

Inequalities are solved the same as equations with one exception: the direction of the inequality changes when you cancel a negative coefficient. So, if x/-9 > -8, x < -8*-9

Answer 6

1) 5 = s / - 7

Solution:

5 * -7 = s * - 7 / -7
- 35 = -7 s / -7
- 35 = s

2) 9 < a / 6

Solution:

9 * 6 < 6a / 6
54 < a

3) p / - 2 < - 5

Solution:

2p / -2 < - 5 * 2
- p < -10
- p * -1 > - 10 * - 1
p > 10

Answer 7

1)

5 = s / -7

Multiply both sides by -7:

-35 = s

2)
9 < a / 6

Multiply both sides by 6

54 < a

3)
p / -2 < -5
Multiply both sides by -2, flip the sign:
p > 10

Answer 8

1. -35

2. a > 54

3. p > 10

Answer 9

1)
5 = s/-7
s/-7 = 5
s/-7 (-7) = 5(-7)
s = -35

2)
9 < a/6
a/6 > 9
a/6 (6) > 9(6)
a > 54

3)
p/-2 < -5
p/-2 (-2) < -5(-2)
p < 10