Step-by-step explanation:
s = side of square
l = length of rectangle = s + 3 cm
w = width of rectangle = s - 2 cm
s² + 30 = (s + 3)(s - 2) = s² + - 2s + 3s - 6 = s² + s - 6
30 = s - 6
s = 36 cm
30 lawnmowers in 20 hours. You can use proportion to solve this. 8/12 times 30 equals 20 hours. You know what I mean with proportion, right?
12 lawnmowers in 8 hours
30 lawnmowers in ? hours
(30 * 8)/ 12= 20
YOU'RE WELCOME!!! :D
~Rania
Use Ga_thMath(u) (brainly doesn't allow me to type it) To use the app u need to take a pic of the problem and then it will process it and you'll get ur answer ASAP(most of the time). Many questions have been asked before so search it on brainly.
Answer:
Hence the critical value for the right-tailed test is . Since the test value is greater than the critical value so we reject the null hypothesis.
Step-by-step explanation:
Hypotheses are:
Here we have s_{1}=6800 and s_{2}=3900. Here we will use F -test. The Value of test statistics is
Here the degree of freedom of the numerator is and The degree of the denominator is
The critical value for the right-tailed test is . Since the test value is greater than the critical value so we reject the null hypothesis.
Answer:
(x-1)(x+7)
Step-by-step explanation:
did it on a test and got it right :))