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Elina [12.6K]
2 years ago
12

para ayudar a una fundación, algunos estudiantes de grado séptimo decidieron reunir alimentos y donarlos. Andrea aporto 2,5 hg d

e arroz, mateo llevo - kg de frijol, catalina ayudo con - kg de arroz y juan coopero con 3,75 kg de frijol A) ¿ cuanto arroz y cuanto frijol recogieron en total B) ¿Qué recogieron mas, arroz o frijol?
Mathematics
1 answer:
andriy [413]2 years ago
5 0

Answer:

c

Step-by-step explanation:

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The table below shows the coordinates of a figure that was transformed.
Dimas [21]

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I think it’s D

Step-by-step explanation:

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Set background
saw5 [17]

Answer:

45/5 = 9

Step-by-step explanation:

use PEMDAS

8 0
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For what values of x is log base 0.8 (x+4)&gt;log base 0.4 (x+4)<br>Thank you!
Radda [10]
We are seeking the solution of the inequality:

\displaystyle{ \log_{0.8}(x+4)\ \textgreater \ \log_{0.4}(x+4).


We recall that a log function f(x)=\log_b(x) is either increasing or decreasing:

i) it is increasing if b>1, 

ii) it is decreasing if 0<b<1.

Consider the functions \displaystyle{ \log_{0.8}(x) and \displaystyle{ \log_{0.4}(x).

The graphs of these functions both meet at x=1 (clearly), and after 1 they are both negative. So from 0 to 1 one of them is larger for all x, and from 1 to infinity the other is larger. (Being strictly decreasing, their graphs can only intersect once.)


We can check for a certain convenient point, for example x=0.8:

\displaystyle{ \log_{0.8}(0.8)=1 and

\displaystyle{ \log_{0.4}(0.8)=\log_{0.4}(0.4\cdot 2)=\log_{0.4}(0.4)+\log_{0.4}(\cdot 2)=1+\log_{0.4}(2).

Now, \displaystyle{ \log_{0.4}(2) is negative since we already explained that for x>1 both functions were negative. This means that 

\displaystyle{ \log_{0.8}(0.8)\ \textgreater \ \log_{0.4}(0.8), and since 0.8\in (0, 1), then this is the interval where \displaystyle{ \log_{0.8}(x)\ \textgreater \ \log_{0.4}(x).


So, now considering the functions \displaystyle{ \log_{0.8}(x+4) and \displaystyle{ \log_{0.4}(x+4), we see that 

x+4 must be in the interval (0,1), so we solve:

0<x+4<1, which yields -4<x<-3 after we subtract by 4.


Answer: (-4, -3). Attached is the graph generated using Desmos.

7 0
2 years ago
What is the solution to 5(w-2)=-10
SVEN [57.7K]

Answer:

w=0

Step-by-step explanation:

5(w-2)=-10

5w-10= -10

     +10   +10

5w=0

÷5   ÷5

w=0

7 0
2 years ago
Write the equation of the line that is parallel to 3x = 2 – 3y and passes through the point ( 2, -7).
Kay [80]
Answers 1/3 because you would add 3y to both sides then divide 2 by 6 and you get 0.33333333 which is 1/3
8 0
3 years ago
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