Teachers at price middle school are planning a birthday party for the principal planners estimated that 42 slices of cake would be needed. In fact only 30 slices of cake were eating what was the error in estimate of how mucj cake was eaten ?


Answer 1


E = 12

RE = 0.4

Step-by-step explanation:

The estimation error (E) is defined as the absolute value of the difference between the actual value (RV) and the estimated value (EV). With RV = 30 and EV = 42.

E = | EV - RV | = | 42 - 32 | = | 12 | = 12

A complementary concept could be the relative error (RE), which is defined as the ratio between the absolute error and the actual value.

RE = E / RV = 12/30 = 2/5 = 0.4

Answer 2
Answer: Error=estimate-actual
if want percent error

percent error=error/original times 100=12/30 times 100=40% error

the error is 12

Related Questions


Find the following bases. a. 8% of ? = 20
b. 75% of ? = 30
c. 20% of ? = 45
d. 150% of ? = 36


It is pretty easy.


a. 250

b. 40

c. 225

d. 24

Step-by-step explanation:


What is 49.32 of the 2nd 10 power


The answer is 4932, if I read the question correctly

Given that α and 2α are the roots of the quadratic equation x² + kx + 18 = 0 find the values ​​of k Hi please help me solve this



The values of 'k' are -9 or 9

Step-by-step explanation:


The quadratic equation is given as:

The roots of the equation are .

Now, we know that, for a quadratic equation of the form

The sum of roots =

Product of roots =

Now, for the given quadratic equation, we have:

Therefore, using the sum of roots, we get:

Now, using product of roots, we get:

Now, plug in the values of in equation (1). This gives,

Hence, the values of 'k' are -9 or 9


Sphere A has a radius of 24 centimeters, and sphere B has a diameter of 42 centimeters. The radius of sphere A is multiplied by what factor to produce the radius of sphere B? 4/7




Step-by-step explanation:

Sphere A has a radius of 24 centimeters, and sphere B has a diameter of 42 centimeters.

WE need find which factor is multiplied with radius of sphere A to produce the radius of sphere B

Diameter of sphere B is 42

Radius = diameter /2

Radius = 42/2= 21

Radius of sphere B = 21

RAdius of sphere A times x= radius of sphere B

24 * x= 21

Divide by 24 on both sides

x= 21/ 24

divide top and bottom by 3

x= 7/ 8

Answer: The factor is 7/8

Step-by-step explanation:

Ok, we know that Sphere A as a radius of 24 cm, and sphere B has a diameter of 42 cm.

We want to find the factor which multiplied by the radius of sphere A gives us the radius of sphere B.

First, let's find the radius of sphere B.

We know that Diameter = 2*Radius.

So the radius of sphere B is equal to the diamater divided by 2.

rB = 42cm/2 = 21cm

now, let's find the number x that:

24cm*x = 21cm

x= 21cm/24cm = 21/24  

now, we can divide numerator and denominator by the same number, in this case 3, and get:

x = 21/24 = (21/3)/(24/3) = 7/8

x = 7/8

So the factor is x= 7/8, the second option.

Random Questions
1) Which can be inferred from the graph? A) Federal spending increased 100% between 1929 and 1932. B) Republicans defeated the Democrats for control of Congress in 1936. C) World War II resulted in increased government spending in the United States. D) Roosevelt’s "New Deal" programs resulted in dramatic increases in government spending after 1933. 2) Which of these is an example of one of the actions that take place at a political party's national convention? A) prepare and approve the party's beliefs B) nominate the party's candidates for Senate C) nominate the party's candidate for the Supreme Court D) ratify treaties and political agreements for the government 3) In the early 1930s, drought hit the Great Plains and the top soil literally blew away, creating what was termed the American “Dust Bowl”. Federal conservation programs were created to rehabilitate the Dust Bowl so that farmers could start over rather than abandon their land and move away. This is an example of A) economic self-destruction brought on by diminishing property values. B) government intervention to prevent migration from an area. C) dust storms created by the natural environment. D) the criminal misuse of agricultural property. 4) This independent regulatory agency was created in 1974 to oversee and regulate the financing of political campaigns in the United States. A) Warren Commission (WC) B) Federal Election Commission (FEC) C) Equal Opportunity Commission (EOC) D) Securities and Exchange Commission (SEC) 5) Which of these would be MOST important to the success of a constitutional government? A) mandatory voting B) a rural population C) checks and balances D) an urban population 6) In the Declaration of Independence, whom did the Americans indict for "repeated injuries and usurpations"? A) King George III, because of the crown's apparent intention to establish despotism B) Parliament, because of the oppressive legislation that it had passed over ten years C) British merchants, because their drive for personal profits had caused them to ignore the greater good of the empire D) The king's ministers, because they had refused to compromise and had turned the king and Parliament against the colonies 7) The Articles of Confederation was important MAINLY because they A) named the country "The United States of America." B) protected the rights and liberties of American citizens. C) forbade states to enter into treaties without approval from Congress. D) held the country together prior to the implementation of the Constitution. 8) Why was the "New Deal" such a new concept for the United States government? A) It was the first time a Democrat had been President. B) It was the first time a Republican had been President. C) The Federal government became very active in the national economy. D) The states refused to take part in Roosevelt's attempts to end The Great Depression. 9) Which is the BEST case for requiring naturalized American citizens to be able to read, write, and speak English? A) It equips them to more fully participate in our democracy. B) It is a unifying force for the diverse citizens of our society. C) It makes it easier for citizens to understand and follow the laws. D) It ensures that they are informed about the issues on which they vote. 10) Which of these was a major philosophy expressed in the Declaration of Independence? A) support for states' rights and slavery B) a belief in the natural rights of citizens C) the need for a federal system of government D) a belief in the benefits of a laissez-faire economy