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tatuchka [14]
3 years ago
8

PLS HELP LAST QUESTION

Mathematics
1 answer:
SashulF [63]3 years ago
3 0

Answer:

it is the first one

Step-by-step explanation:

ion know how to explain it but it is

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Simplify this radical. <img src="https://tex.z-dn.net/?f=%5Csqrt%7B%7D%2084" id="TexFormula1" title="\sqrt{} 84" alt="\sqrt{} 84
igor_vitrenko [27]

Answer:

2√21

Step-by-step explanation:

\sqrt{84}\\\\\mathrm{Prime\:factorization\:of\:}84:\quad 2^2\times\:3\times\:7\\=\sqrt{2^2\times\:3\times \:7}\\\\=\sqrt{2^2}\sqrt{3\times\:7}\\\\\sqrt{2^2}=2\\\\=2\sqrt{3\times\:7}\\\\=2\sqrt{21}

5 0
3 years ago
Jacques, an artisan cheese maker, collects data on every step of the cheese-making process for each batch he makes. Jacques noti
Jobisdone [24]

Answer:

c. The moming pH of the cheese tends to be higher when the daly Ngh temperature in the shop is cooler compared 10 when the duly high temperature is warmer

Daily high temperature and the pH of cheese are inversely related.When one variable increases, the other one decreases.

Step-by-step explanation:

When there is a negative correlation between two variables, it means when one variable increases, the other one decreases.A correlation of -0.64 means that the variable do not have a strong negative correlation because its less that -0.9. However, this correlation is not a weak negative correlation because the value is more that -0.1

8 0
3 years ago
3. Samuel tiene 11 cajas con mosaicos cuadrados de 20 cm por
mihalych1998 [28]

Answer:

Primero veamos el área de la pared, es decir, el área total que Samuel debe cubrir.

La pared es de 3m por 2m.

Entonces el area es:

A = 3m*¨2m = 6m^2.

Ahora veamos los mosaicos.

Cada mosaico es un cuadrado de 20cm por 20cm.

El primer paso sería cambiar las unidades para tener metros aca también.

1cm = 0.01m

entonces.

20cm = 20*0.01m = 0.2m.

Entonces cada mosaico es:

0.2m por 0.2m

El área de cada mosaico es:

a = 0.2m*0.2m = 0.04m^2.

En una caja de mosaicos hay 14 mosaicos, entonces con una caja Samuel puede cubrir 14 veces a, o:

14*0.04m^2 = 0.56m^2.

Y Samuel tiene 11 cajas, entonces tenemos 11 veces lo de arriba:

11*0.56m^2 = 6.16m^2.

Y el área de la pared es 6m^2.

6.16m^2 > 6m^2

Entonces con las 11 cajas de mosaicos podemos cubrir completamente esa pared, y vamos a tener algunos mosaicos sobrantes.

Entonces Samuel no debe comprar mas cajas.

6 0
3 years ago
Write an equation for the function that includes the points (2,100)and (3,100)
Alenkasestr [34]

Answer:

y = 100 is the easiest function with these points.

Another one is  

y = (x - 2)(x - 3) + 100 = x^2 - 5·x + 106


4 0
3 years ago
Read 2 more answers
How many times smaller is 4 × 10-9 than 8 × 10-7? A. 200 B. 20 C. 20,000 D. 2,000
masya89 [10]

Answer:

17

Step-by-step explanation:

4×10-9= 4

8×10-7=21

21-4=17

4 0
3 years ago
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