What is used to represent an element?

Define scientific theory.

All of the following are characteristics of a scientific theory EXCEPT what?

A. A scientific theory does not include personal bias.

B. Scientific theory is based on observable and replicable evidence.

C. A scientific theory can never be proven as truth.

D. Scientific theories can be proven.

Find the value of each expression. $3 \cdot 2 ^ { 4 } + 5 \div 5 - 8$

Use the given claim to state a null hypothesis and an alternative hypothesis. Identify which hypothesis represents the claim.

Claim: $\sigma$>6.2

Explain why the following statement does not need to be justified. “The midpoint of a segment is a point on the segment that divides it into two congruent segments.”

The scale on a map is 1 cm represents 5 km. A provincial park has an area of $6 cm^ 2$ on the map. What is the actual area of the park, to the nearest square kilometre?

All of the following were reasons for the Western policy toward fascist aggression EXCEPT (A) French and British fears of another war. (B) the process of decolonization, which challenged the British commitment to the European continent. (C) a distrust between Western democracies and the Soviet Union. (D) the Great Depression, which had undermined and weakened Western democracies.l

Let

$$m ( t ) = ( 1 / 6 ) e ^ { t } + ( 2 / 6 ) e ^ { 2 t } + ( 3 / 6 ) e ^ { 3 t }$$

. Find the following. The distribution of Y

True or false: The C - C bonds in benzene are all the same length and correspond to typical single C - C bond lengths.

Jane bought a prepaid phone card that had 500 minutes. She used about 25 minutes of calling time per week. Write and graph an equation to approximate her remaining calling time y (in minutes) after 9 weeks.

(a) Are the people Ehrlich describes friendly or quiet? (b) Does the landscape affect their personalities? Explain.

Mike’s Famous Toy Trucks company manufactures two kinds of toy trucks—a dumpster and a tanker. In the manufacturing process, each dumpster requires 3 hours of grinding and 4 hours of finishing, while each tanker requires 2 hours of grinding and 3 hours of finishing. The company has one grinder and two finishers, each of whom works at most 40 hours per week. (a) Using x to denote the number of dumpsters and y to denote the number of tankers, write a system of linear inequalities that describes the possible numbers of each truck that can be manufactured per week. (b) Graph the system and list its corner points.

Determine whether the given equation is an identity. If the equation is not an identity, find all its solutions.

$$x e ^ { \ln x ^ { 2 } } = x ^ { 3 }$$