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pashok25 [27]
4 years ago
5

a contractor estimates that he can paint a house in 5 days using 6 men. if he actually uses 5 men for the job, how many days wil

l they take to paint the house?
Mathematics
2 answers:
ankoles [38]4 years ago
7 0
It will take 4 days to paint the house with 5 men
sp2606 [1]4 years ago
4 0

1 house = 6 men x 5 days  = 30 man days

Need 30 man days with only 5 men: 30x = 5 men   →  x = 6

It will take 6 days for 5 men to complete the job.

Answer: 6 days


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It should be no solution
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3 years ago
QUESTION 20
Elodia [21]

Answer:

B. -55

Step-by-step explanation:

La resta entre ambas funciones consiste en la sustracción de términos semejantes como demostraremos a continuación:

1) f(x) =-2\cdot x ^{2}-6 Dado

2) g(x) = x+4 Dado

3) (f-g)(x) = (-2\cdot x^{2}-6)-(x+4) Definición de resta de funciones.

4) (f-g)(x) = (-2\cdot x^{2}-6)+(-1) \cdot (x+4)        (-1)\cdot a = -a

5) (f-g)(x) = (-2\cdot x^{2}-6) + (-x-4) Propiedad distributiva/(-1)\cdot a = -a

6) (f-g)(x) = -2\cdot x^{2}-x+(-6-4) Propiedad conmutativa

7) (f-g) (x) = -2\cdot x^{2}-x-10 Sustracción de términos semejantes/Resultados.

A continuación, evaluamos la función resultante en x = -5:

(f-g)(-5) = -2\cdot (-5)^{2}-(-5)-10

(f-g)(-5) =-55

Por ende, la respuesta correcta es B.

8 0
3 years ago
Evaluate the following expression. -8 - (-10)^2. please please help I will give brainlist 1st who ansers​
Alekssandra [29.7K]

Answer:

-108

Step-by-step explanation:

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= -8 - 100

= -108

5 0
3 years ago
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Anika [276]
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Since both terms have x in them, x will be apart of your answer.

The GCF of 12 and 30 is 6.

So you can factor out 6x from both terms.

Hope this helps!
4 0
3 years ago
Ron had 20 apples. He used 2/5 of the apples to make pies. How many apples did Ron use for pies?
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1/5 of 20 is 4.

2/5 of 20 is 8.

Therefore, Ron used 8 apples to make his pies.
4 0
3 years ago
Read 2 more answers
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