Answer:
110
Step-by-step explanation:
180 - 70 = 110
30 people want 300 ml of soda. To find the total amount of soda we will need, we have to multiply the amount of soda (300 ml) by the number of people drinking soda (30).
300 * 30 = 9000 ml
We know that there are 1000 milliliters in a liter.
9000 ml / 1000 = 9 Liters
We know that we need 9 liters of soda for the 30 people.
However, the question asks how many 2 liter bottles you will need.
9/2 = 4.5
Therefore, you will need 4.5 two - Liter bottles of soda. (Some teachers may say that you can't buy half of a bottle of soda, so in that instance you would just buy 5 two-liter bottles.)
Answer:
Area of shaded region = 351.68 cm²
Step-by-step explanation:
Area of a circle = πr²
where r = radius = 3.14
Area of bigger circle = 3.14 × 11²
= 3.14 × 11 × 11
= 379.94cm²
Area of smaller circle = 3.14 * 3²
= 3.14 × 3 × 3
= 28.26cm²
Area of shaded region = Area of bigger circle - Area of smaller circle
= (379.94 - 28.26) cm²
= 351.68 cm²
Answer:
The geometric mean of the measures of the line segments AD and DC is 60/13
Step-by-step explanation:
Geometric mean: BD² = AD×DC
BD = √(AD×DC)
hypotenuse/leg = leg/part
ΔADB: AC/12 = 12/AD
AC×AD = 12×12 = 144
AD = 144/AC
ΔBDC: AC/5 = 5/DC
AC×DC = 5×5 = 25
DC = 25/AC
BD = √[(144/AC)(25/AC)]
BD = (12×5)/AC
BD= 60/AC
Apply Pythagoras theorem in ΔABC
AC² = 12² + 5²
AC² = 144+ 25 = 169
AC = √169 = 13
BD = 60/13
The geometric mean of the measures of the line segments AD and DC is BD = 60/13
85- (3.5*12)
* means times
I think this is correct.
