A^2 = b^2 + c^2 - 2bc cos a
= 11^2 + 5^2 - 2*5*11 cos 40
= 7.86 to 2 DP's
to find the remaining angles use the sine rule:-
a / sin A = b / sin B so
7.857/ sin 40 = 11 / sin B
sin B = 11 sin40 / 7.857 = 0.8999
<B = 64 degrees
so <C = 180 - 64-40 = 76 degrees
The hypothesis (If the sidewalks are wet) of this conditional statement is true, but the conclusion (it has been raining) is false.
<h3>What is a conditional statement?</h3>
A conditional statement can be defined as a type of statement that can be written to have both a hypothesis and conclusion. This ultimately implies that, it typically has the form "if P then Q."
Where:
P and Q represent sentences.
<h3>What is a hypothesis?</h3>
In Science, a hypothesis is primarily considered to be a tentative or an educated guess and it can be defined as a testable explanation for an observation or a specific experimentation (scientific) problem, especially by using the "if . . . then . . . because" format..
The hypothesis (If the sidewalks are wet) of this conditional statement is true, but the conclusion (it has been raining) is false. Also, this can be proven with this counterexample "If the sidewalks are wet, then it is cause of an erosion/irrigation."
Read more on conditional statement here: brainly.com/question/16951916
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Doubling the side length multiplies the area by 4
5*7/10= 7/2 =3.5 which lies between 3 and 4.
Answer:
The answer would be 4
Step-by-step explanation:
