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Anastaziya [24]
3 years ago
11

True or false that the opposite of a number is always positive

Mathematics
1 answer:
lubasha [3.4K]3 years ago
3 0
False because if it’s a positive number then the opposite is gonna be a negative
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Which solution contains the correct number of significant digits for the product 2.80 mm · 0.1 mm.
BigorU [14]
2 significant digits should be represented in the product
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Pete buys 5 video games at $64 each and pays for them with $20 bills. How many $20 bills does it take?
slavikrds [6]

64 * 5 = 512

512/20 = 25.6

It takes 26 $20 bills.

4 0
3 years ago
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A fish was swimming 2 ½ feet below the water's surface at 1:00 pm. Three hours later, the fish was at a depth that is 3 ¼ feet b
IgorC [24]

Answer:

The fish will be at a distance of 5 3/4 ft from the water surface at 4:00 pm

Step-by-step explanation:

Here, we want to find a rational number that represents the position of the Fish at 4pm

Initially it was at a depth of 2 1/2 ft below the water surface

At 4pm, it went 3 1/4 ft further

Thus, its position with respect to the water surface at 4 pm will be;

2 1/2 + 3 1/4

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3 years ago
Least to greatest -1.65/2 -7/80.9 -6/5
bagirrra123 [75]
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3 years ago
Se requiere dos personas para construir una barda de 20 m de largo y 1.5 m de alto en dos días ¿cuántas personas se necesitan pa
Wewaii [24]

Answer:

Definamos R como la "velocidad" a la que una persona puede construir la barda dada.

Supongamos que la persona necesita un tiempo T para construir la barda, entonces tenemos la relación:

R*T = 1 barda.

Si dos personas trabajan juntas la velocidad de trabajo va a ser (R + R), y sabemos que ellos pueden completar el trabajo en 2 días, entonces:

(R + R)*2 días = 1 barda

(2*R)*2 días = 1 barda

(2*R) = (1/2) barda por día

R = (1/2)*(1/2) barda por día = (1/4) barda por día.

Esto significa que una persona puede completar un cuarto de la barda en un día de trabajo.

Ahora queremos saber cuantas personas se necesitan para construir una barda en solo medio día, entonces debemos resolver:

(N*R)*0.5 días = 1 barda

Donde N es el número de personas que queremos obtener.

(N* (1/4) barda por día)*0.5 días = 1 barda

N*(1/4) barda por día = (1/0.5) bardas por día = 2 bardas por día

N = 2/(1/4) = 2*4 = 8

N = 8

Se necesitan 8 personas para construir una barda en medio día.

6 0
2 years ago
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