Answer:
The temperature in the greenhouse was at least 68 degrees before the heater stopped working.
Step-by-step explanation:
It was at 68 then it dropped by 2 degrees.
Discriminant = b^2 - 4ac, where a, b and c come from the form of the quadratic equation as ax^2 + bx + c
Discriminant = (4)^2 - 4(1)(5)
= 16 - 20
= -4
-4 < 0, therefor there are no roots
(If the discriminant = 0, then there is one root
If the discriminant > 0, there are two roots, and if it is a perfect square (eg. 4, 9, 16, etc.) then there are two rational roots
If the discriminant < 0, there are no roots)
Answer:
1. 500mg
2.A watermelon weighs about 3 (grams /(kilograms) 3.
3. 500 oranges
4. 30 weeks
5. 1500
Step-by-step explanation:
1. Therefore, 0.5 g=0.5*1000=500 mg
2. A watermelon weighs about 3 (grams /(kilograms) 3.
3.Weight of the box- 40 kg
Weight of 1 orange-80
Therefore, no. of total oranges=
40 kg=40000g
Now, 40000÷80
= 500
4. 500g x 2 is 1000 g and is 1kg
105-90 is equal to 15kg
500 x 30 is 15000 g is equal to 15 kg
5. divide by 4 to get the mass of a single bag and then multiply by 1000 to get to grams from kilograms
6/4=1.5
1.5*1000=1500
therefore a single bag of sugar weighs 1500 grams
Add up all the temperatures and divide by 4.
113/4=28.25
so if you need to round then 28.3 or just 28.
