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Sati [7]
2 years ago
11

On a horizontal number line, numbers are what

Mathematics
2 answers:
Vikentia [17]2 years ago
6 0

Answer:

to the right of zero if postive if negative left

Ira Lisetskai [31]2 years ago
4 0

Answer:

to the right of zero if positive if negative to the left

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Which of the following equations is used to find the value of c (the distance to the foci) for an ellipse? 
Reika [66]

The equation of ellipse:

\dfrac{(x-h)^2}{a^2}+\dfrac{(y-k)^2}{b^2}=1

The formula of c (the distance to the foci)

c^2=a^2-b^2\qquad|\text{add}\ b^2\ \text{to the both sides}\\\\c^2+b^2=a^2

<h3>Answer: c² + b² = a²</h3>
4 0
3 years ago
What do I get if I multiply 2x2 by 3x3?
RUDIKE [14]

Answer:

36

Step-by-step explanation:

(2x2)(3x3)

(4)(9)

36

3 0
3 years ago
Read 2 more answers
What is the value of 8n when n = 2
Mama L [17]
8n is 8 x n. If n is 2, then 8n is 8 x 2 which is 16! Hope that helps!
7 0
3 years ago
Read 2 more answers
Una nadadora entrenó todos los días durante 21días. El primer día nadó 15 minutos, y cada día nadaba 5 minutos más que el día an
nadya68 [22]

Responder:

1 hora 55 minutos; 22 horas 45 minutos

Explicación paso a paso:

Dado que:

Tiempo el primer día = 15 minutos

Minutos adicionales cada día siguiente = 5 minutos

Número total de días

Usando la fórmula del enésimo término de una progresión aritmética:

Tn = A + (n - 1) d

A = primer trimestre = 15

d = diferencia común = 5

n = enésimo término

Tiempo de nado el último día (n = 21)

T21 = 15 + (21 - 1) 5

T21 = 15 + 20 * 5

T21 = 15 + 100

T21 = 115 minutos

= 1 hora 55 minutos

SEGUNDO.)

Suma de minutos durante las 3 semanas

Suma de n términos:

Sn = n / 2 * (primer término + último término)

Primer término = 15

Último trimestre = a21 = 115 minutos

n = número de términos = 21

Por lo tanto,

Sn = 21/2 * (15 + 115)

Sn = 10,5 * (130)

Sn = 1365 minutos

= 22 horas 45 minutos

3 0
3 years ago
82 (3x+1)<br><br> Find the value of x
PolarNik [594]

Answer:

this equals 246x + 82

Step-by-step explanation:

We do this by doing distributive property.

This means to multiply the outside number of the parenthesis ₙ(   ) to everything inside the parenthesis.

So 82·3x is 246x

Then 82·1

This equals all together 246x + 82

If you have any questions feel free to ask in the comments - Mark

ALSO Happy Valentines Day ❤

7 0
3 years ago
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