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butalik [34]
2 years ago
12

Select all the correct.

Mathematics
1 answer:
Gemiola [76]2 years ago
3 0
The answer is X=5, X=-2 and x=-4
You might be interested in
Philip buys a pack of markers for $1.29, a pencil for $0.84, and an eraser for $0.79. How much does he spend altogether
Tom [10]

Answer:

Not sure what you are looking for but... I believe the answer is $2.92

Step-by-step explanation:

7 0
3 years ago
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
Can someone help me with question 1 and 2 please​
klasskru [66]
Question 1)
there’s 180 degrees in a triangle
70 + 70 = 140
180 - 140= 40
A= 40
question 2)
there’s only one line of symmetry, down the middle
5 0
3 years ago
Can anyone help me do this?
lubasha [3.4K]

Answer:

answer explained in the photo.

4 0
3 years ago
Please help!
photoshop1234 [79]
PART A
rectangle : circle
              5:13
PART B
5x3 : 13x3
  15 : 39
Hope this helped! :)
5 0
3 years ago
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