Percent error is calculated using
((Actual - predicted) / actual) * 100
In this case, the actual value of the number of pages he read is 20. The expected value was 23. So simply plug in:
((20 - 23) / 20) * 100 = -15%
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The fraction 45/54 is equivalent to 5/6.
This is a PROPER FRACTION once the absolute value of the top number or numerator (45) is smaller than the absolute value of the bottom number or denomintor (54).
The fraction 45/54 is equal to 45÷54 and can also be expressed in decimal form as 0.833333, but as a fraction 5/6
Answer:
Step-by-step explanation:
h e a t e r
The measure of length <em>a </em>is 21
Step-by-step explanation:
ΔABC ~ ΔDBE
I use equation :
So, the measure of length <em>a</em> is 21
<em>Hope </em><em>it </em><em>helpful </em><em>and </em><em>useful </em><em>:</em><em>)</em>
Answer:
In general, quadratic equations have two x-intercepts. But sometimes it happens that a quadratic eqution has one x-intercept or no interepts. That's why we should fully analyze this equation:
Given the following equation: y=3x^2 + 7 + m
If y=0, then:
3x^2 + 7 + m = 0 ⇒ x^2 = (-m-7)/3
Then ±
Given that we can take the square root of a negative number, the only way this equation has two x-intercepts is if m<-7.
Summarizing:
The equation: y=3x^2 + 7 + m has two x-intercepts only if m is less than -7. If m equals -7, the equation has only one x-intercept, and finally, if m is greater than -7, the equation has NO x-intercepts.