Answer:
A: 4
Step-by-step explanation:
You see,, in ratios, the divisor is always the same and in our case, it's 3 . you just divide 12 with the divisor
JMK’s angle is part of the right angle of JMN. The measurements there is 28°. A right angle is 90° so subtract 90 and 28 to get your angle measurement of JMK.
A small hint for the STR one is the fact that the straight lines are 180°. So Look at the line RTS. RTS is 180° by adding both the measurement of STR and STP. Simply subtract 180° with 118 to get STR.
Answer:
The conclusion is that the average level of decibel at the library has changed since the installation of a new computer plug
Step-by-step explanation:
From the question we are told that
The population mean is
The sample size is
The sample mean is
The sample standard deviation is
The level of significance is
The Null Hypothesis is
The Alternative Hypothesis is
The test statistics is mathematically evaluated as
substituting values
The negative sign show that this is a left-tail test
Now the critical value of the level of significance obtained from the critical values table is
Now comparing the critical value of the and the test statistics we see that critical value is greater than the test statistic which implies that the null hypothesis is rejected.
The conclusion is that the average level of decibel at the library has changed since the installation of a new computer plug
Answer:The answer is A, because they both have the same shape and value (area)
Step-by-step explanation:
Step-by-step explanation:
x/5 + 7 = 16
x/5 = 16 - 7
x/5 = 9
x = 9×5
= 45