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maksim [4K]
4 years ago
8

D + 9 = 29 A) 38 B) 21 C) 19 D) 20

Mathematics
2 answers:
Marta_Voda [28]4 years ago
5 0

The answer would be D

Step-by-step explanation:

Just subtract 9 from 29

Once you do that you get 20

20+9=29

____ [38]4 years ago
4 0

Answer: D)20

Step-by-step explanation: 29-9=20

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100.0 bc it is ONE bird or 100%?????

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➷  slope = (y2 - y1)/(x2 - x1)

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Compare the functions shown below:
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Resuelve:
jok3333 [9.3K]

Answer:

A partir del problemas vamos a crear una ecuación donde X es una docena de huevos y Y una libra de mantequilla

entonces: 4 docenas de huevos y 3 libras de mantequilla es igual a 14.100

en mi primera ecuación seria: 4X + 3Y = 14.100

ahora haremos la segunda ecuacion: tres docenas y 1 libra de mantequilla

en mi segunda ecuación seria: 3X + 1Y = 8.700 el plan es sumar las dos ecuaciones pero yo quiero que al sumarlas la variable "Y" desaparezca así que mi segunda ecuación la voy a multiplicar pór (-3) quedándome todo así:

primera ecuación: 4X + 3Y = 14.100

segunda ecuacion multiplicada por -3: -9X - 3Y = -26.1

al sumarlas obtengo como resultado: -5X = -12

resolviendo esa ecuacion obtengo que X=  

X=2.4

luego reemplazas X en la primera ecuación: 4X + 3Y = 14.100

reemplazando seria: 4 x (2.4) + 3Y =14.100

9.6 + 3Y = 14.1000

3Y= 14.100 - 9.6

Y=  

Y=1.5

entonces concluimos que la docena de huevos cuesta 2.4 $ y la libra de mantequilla 1.5 $

Step-by-step explanation:

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