3 years ago

Whatt are some inportant rules to dividing and multipling positives and negitives.

1 answer:

4 0

Positive × Positive = Positive
3 × 2 = 6
m × n = mn

Positive × Negative = Negative
8 × -4 = -32
m × -n = -mn

Negative × Negative = Positive
-5 × -4 = 20
-m × -n = mn
(-x) × (-x) = x²

The same rules apply for division as multiplication.

You might be interested in

Tank 1 initially contains 50 gals of water with 10 oz of salt in it, while tank 2 initially contains 20 gals of water with 15 oz

Naddik [55]

$\dfrac{\mathrm dx_1}{\mathrm dt}=\dfrac{2\text{ oz}}{1\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}-\dfrac{x_1(t)\text{ oz}}{50\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}$
$\dfrac{\mathrm dx_2}{\mathrm dt}=\dfrac{x_1(t)\text{ oz}}{50\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}-\dfrac{x_2(t)\text{ oz}}{20\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}$

$\implies\begin{cases}\dfrac{\mathrm dx_1}{\mathrm dt}=10-\dfrac1{10}x_1\\\\\dfrac{\mathrm dx_2}{\mathrm dt}=\dfrac1{10}x_1-\dfrac14x_2\\\\x_1(0)=10\\\\x_2(0)=15\end{cases}$

6 0

3 years ago

1-) Emily and her friends went to the park. They saw 15 robins and 9 blue jays. How many birds did they see.? 24 birds.

m_a_m_a [10]

I decided to do a addition problem because based on the answer it couldn't be multiplication, subtraction, or division. Therefore, my problem would look like 15+9=24 birds in total.

8 0

3 years ago

Read 2 more answers

5. Which side lengths could not form a triangle?

romanna [79]

Answer:

A, B, C, D

Step-by-step explanation:

A is equal to 54, B is equal to 23, C is equal to 72, and D is equal to 84.

6 0

2 years ago

Read 2 more answers