Which number below best represents a depth of two meters below the ground?

Mathematics

1 answer:

Slav-nsk [51]2 years ago

7 0

Answer:

-2

Step-by-step explanation:

We usually start measuring the height from the ground, so basically the positive direction is above the ground, for example 2 is the best number which represents 2m above the ground.

So the negative sign represents the depth below the ground.

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Multiply the fractions:<br> 2 / 5 ∙ 3 / 4.

Bingel [31]

Answer:

$\frac{3}{10}$

Step-by-step explanation:

$\frac{2}{5} * \frac{3}{4}$ can be solved by just multiplying the numerators together and the denominators together

2 * 3 = 6 and 5 * 4 = 20 so the answer would be $\frac{6}{20}$

This simplifies to $\frac{3}{10}$

4 0

3 years ago

(-19+7i)-(29+32i)=<br><br> in the form (a+bi)

olga_2 [115]

ANSWER

$-48-25i$

EXPLANATION

We want to simplify the expression,

$(-19+7i) - (29+32i)$

Let us expand the bracket to obtain,

$-19+7i-29-32i$

We now group the complex number parts and real number parts.

$-19 -29+7i-32i$

We simplify further to obtain,

$- 48-25i$

This is in the form,

$a+bi$

where

$a=-48$

and

$b=-25$