MATHEMATICS HIGH SCHOOL

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 ?

Answers

Answer 1
Answer:

Answer:

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
error=42-30=12
if want percent error

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


the error is 12

Related Questions

MIDDLE SCHOOL

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

Answers

It is pretty easy.

Answer:

a. 250

b. 40

c. 225

d. 24

Step-by-step explanation:

MIDDLE SCHOOL

What is 49.32 of the 2nd 10 power

Answers

The answer is 4932, if I read the question correctly
MIDDLE SCHOOL

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

Answers

Answer:

The values of 'k' are -9 or 9

Step-by-step explanation:

Given:

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

HIGH SCHOOL

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
7/8
8/7
7/4

Answers

Answer:

7/8

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.

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