3 years ago

What kind of number is -2

Mathematics

1 answer:

makvit [3.9K]3 years ago

5 0

Is a number negative

You might be interested in

Cos90degrees cos30 degrees + sec-squared45degrees sin30degrees - cos270degrees sin180degrees

yawa3891 [41]

Step-by-step explanation:

$\cos 90 \cos 30 + \sec^2 45 \sin 30 - \cos 270 \sin 180$

But we know that

$\cos 90 = \cos 270 = \sin 180 = 0$

and

$\sin 30 = \dfrac{\sqrt{3}}{2} \:\:\text{and}\:\: \sec 45 = \sqrt{2}$

so this leaves us with just

$\sec^2 45 \sin 30 = (\sqrt{2})^2 \left(\dfrac{\sqrt{3}}{2} \right)= \sqrt{3}$

6 0

3 years ago

can someone help me understand this? The length of the rectangle is two more then its width. the perimeter of the rectangle is 7

Tema [17]

Answer:

length = 24 meters

Step-by-step explanation:

1. l = 2w

2. P = 2l + 2w

P=72

3. 72 = 2l + 2w

4. Substitute w=l/2 to solve for l

72 = 2l + 2(l/2) ---> 72 = 3L - Divide by 3 on both sides

L= 24 meters

4 0

3 years ago

The population of a city in the year 2000 was 4,400. In 2010, the population was 5,060. Find the percent increase in the populat

larisa86 [58]

Answer:

total population in the year 2000=4400

total population in the year 2010=5060

no of people increased=5060-4400

=660

increase percent=660/4400*100%

=3/20*100%

=15%

Step-by-step explanation:

15/100*5060

0.15*5060

759

in 2020 population will be

5060+759

5819

therefore the population will be 5819 in 2020

6 0

2 years ago

Read 2 more answers

Does 6(x + 5) = 6x + 11 , have on solution, infinitely many solutions, or no solutions?

choli [55]

Answer:

no solution

Step-by-step explanation:

hello

$6(x+5)=6x+11\\ 6x+30=6x+11\\ 30=11$

this is always false so there is no solution

3 0

3 years ago

Read 2 more answers

Which shows all the equations that represent

Arturiano [62]

Answer:

the answer is H because it is h

5 0

2 years ago

Read 2 more answers