X=-3
7+4x=-5
-7 -7
4x=-12
/4. 4/
X=-3
Answer:
-S = 15
Step-by-step explanation:
You are asked to find the opposite of the given value.
<h3>Opposite</h3>
The opposite of an integer value is obtained by changing its sign.
S = -15
-S = -(-15) = 15
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<em>Additional comment</em>
Equivalently, you are multiplying by -1. The product of an even number of minus signs is a plus sign. We usually don't write the plus sign for a numerical value.
Answer:
There is no solution
Step-by-step explanation:
4x - 2y = 5 --> 4x - 2(2x + 10) = 5
4x - 4x - 20 = 5
4x - 4x -25 = 0
Final answer is -25 = 0 and so therefor it is no solution
Answer:
There is sufficient evidence to conclude that six inches spacing has a higher mean failure pressure than 8 inches
Reject
level of significance
Step-by-step explanation:
From the question we are told that:
Sample size 1 
Spacing 1 
Mean 1 
Standard deviation 1 
Sample size 2 
Spacing 2 
Mean 1 
Standard deviation 1
Generally the hypothesis is mathematically given as
Null 
Alternative 
Generally the equation for pooled estimate is mathematically given by

Therefore


Generally the equation for test statistics is mathematically given by



Therefore From table


Therefore
There is sufficient evidence to conclude that six inches spacing has a higher mean failure pressure than 8 inches
Reject
level of significance