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trasher [3.6K]
2 years ago
12

Please Help With This!!

Mathematics
1 answer:
fomenos2 years ago
6 0

Answer:

f=4

Step-by-step explanation:

-11f=7(1-2f)+5

-11 f=7-14f+5

14f-11f=12

3f=12

f=4

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Slove for x. 12x+7<-11 or 5x-8>40​
Elan Coil [88]

Answer:

x<-3/2, x>48/5

Step-by-step explanation:

12x+7<-11

12x<-18

x<-3/2

5x-8>40

5x>48

x>48/5

Hope this helps!

5 0
2 years ago
N(3,2) it is reflected across the y-axis, what is the point N'
Lady_Fox [76]

Answer:

i am very confused...

Step-by-step explanation:

but im going to ask that n= (3,2)

5 0
3 years ago
A publisher reports that 45% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is
nexus9112 [7]

Answer:

z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933  

p_v =2*P(z  

Step-by-step explanation:

Information given

n=370 represent the sample selected

\hat p=0.4 estimated proportion of  readers owned a laptop

p_o=0.45 is the value that we want to test

z would represent the statistic

p_v represent the p value

Creating the hypothesis

We need to conduct a hypothesis in order to test if the true proportion of readers owned a laptop is different from 0.45, the system of hypothesis are:  

Null hypothesis:p=0.45  

Alternative hypothesis:p \neq 0.45  

The statistic is:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing we got:

z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933  

Calculating the p value  

We have a bilateral test so then the p value would be:

p_v =2*P(z  

8 0
2 years ago
SomeOne Do This Thank You If u had because if u answered my question u get.................................................... i
jonny [76]

Answer:

1

Step-by-step explanation:

By  gradient, if you mean the "slope" of the linear function, then you have to find two points of the graph and use the "rise over run strategy". Given two coordinates, (x1, y1) and (x2, y2) of a linear function in the form y=mx+b, the slope of the line is (y2-y1)/(x2-x1). This shows the amount of "rise", or the vertical change, and the amount of "run", which is the horizontal change. Rise/Run gives the steepness of the line. The slope can also be modeled by Δy/Δx, which is the change in y over the change in x

Plugging in the given points (0,5) and (-5,0):

(y2-y1)/(x2-x1)= (5-0)/(0-(-5)) = 5/5 = 1

7 0
2 years ago
Which explains, on a given day, which island is more likely to have a wind speed close to its median? Country A because the medi
Leya [2.2K]

Answer:b

Step-by-step explanation:

8 0
3 years ago
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