Answer:
see below
Step-by-step explanation:
the temperature rose by 11. +11
the temperature dropped by 14 - 14
Let t = temperature
The expression is
t + 11 -14
Let x be positive chips and y be negative chips
xxxxx xxxxx x
yyyyy yyyyy yyyy
The result is -3
t-3
Answer:
<h2>the strength and vitality required for sustained physical or mental activity is called energy..</h2>
<h2>
Answer with explanation:</h2>
Let be the population mean.
Null hypothesis :
Alternative hypothesis :
Since the alternative hypothesis is left tailed, so the test is a left-tailed test.
Sample size : n=5 <30 , so we use t-test.
Test statistic:
Critical t-value for t=
Since, the absolute value of t (1.79) is less than the critical t-value , so we fail to reject the null hypothesis.
Hence, we have sufficient evidence to support the company's claim.
Answer:
x = 41 3/4
Step-by-step explanation:
(2 1/2)x -(3/4)(2x +5) = 38
(2 1/2)x -(1 1/2)x -15/4 = 38 . . . . use the distributive property
x = 38 +3 3/4 . . . . . . add 15/4
x = 41 3/4
_____
Another way to solve this is to "clear fractions" by multiplying the whole equation by 4:
10x -3(2x +5) = 152
4x -15 = 152 . . . . eliminate parentheses
4x = 167 . . . . . . . add 15
x = 41 3/4 . . . . . . divide by 4
Answer:
4/5x - y = -2 is the answer.