To have 2 real number solutions the discriminant b^2 - 4ac must be greater than zero.
so the condition for 2 real roots in this equation is:-
b^2 - 4*1*5 > 0
b^2 > 20
b > sqrt 20 ( positive root) Answer
Answer:
E (-2, 4).
Step-by-step explanation:
(x/2 + 1)(x/2 - 2) = 0
x/2 = -1, x/2 = 2
x = -2, 4.
The roots will be 2 times the roots of f(x).
Answer:
His total calorie consumption for the day is:
Option C. 1.820 kcal
Step-by-step explanation:
Protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram, then:
1.) 160 grams of carbohydrates contain:
160 grams * (4 cal/gram)=640 cal
2.) 100 grams of fat contain:
100 grams * (9 cal/gram)=900 cal
3.) 70 grams of protein contain:
70 grams * (4 cal/gram)=280 cal
Then, his total calorie consumption for the day is:
T=640 cal + 900 cal +280 cal
T=1,820 cal
T=1,820 cal (1 kcal / 1,000 cal)
T=1.820 kcal
Answer:
Pi also appears in the calculations to determine the area of an ellipse and in finding the radius, surface area, and volume of a sphere.
Step-by-step explanation:
The number represented by pi (π) is used in calculations whenever something round (or nearly so) is involved, such as for circles, spheres, cylinders, cones, and ellipses. Its value is necessary to compute many important quantities about these shapes, such as understanding the relationship between a circle’s radius and its circumference and area (circumference=2πr; area=πr²).
Our world contains many round and near-round objects; finding the exact value of pi helps us build, manufacture, and work with them more accurately.
