3 years ago

If a • b > 0 and a < 0, what must be true about b?

1 answer:

8 0

Answer:

It is a negitive number

Step-by-step explanation:

You might be interested in

lakkis [162]

Answer:

Step-by-step explanation:

6 0

4 years ago

allochka39001 [22]

Answer:

2,122.64 square units or $676 \pi$ units squared

Step-by-step explanation:

The surface area of a sphere can be found using the formula $A=4\pi r^2$ . Since the radius is 13 units, substitute r=13.

$SA=4\pi r^2\\SA = 4 \pi (13)^2\\SA = 4 \pi *169\\SA = 2122.64$

Without multiplying 3.14 for $\pi$ , the answer is

$SA = 169*4 \ pi\\SA = 676 \pi$

8 0

3 years ago

Andreyy89

Answer: (u+7) x -3

I like to use substitution, for example u=2

(2+7) x -3 = -27

-3(2+7) = -27

5 0

3 years ago

german

Answer:

Step-by-step explanation:

$\sqrt{3}$ * $\sqrt{3}$ = 3

6 0

3 years ago

nydimaria [60]

Answer is 5040
10×9×8×7=5040

5 0

3 years ago