Amustard seed has a mass of about 0.002. a glass jair contains about 4.3602 x 10 ^ 4 seeds. which is a reasonable estimate of the mass of the mustard seeds in the jar?
a.(2 x 10 ^-3) x(4 x 10 ^4)= 8 x 10 ^7
b.(2 x 10 ^-3) x (4 x 10 ^4)=8 x 10 ^1
c. (2 x 10 ^-2) x ( 4 x 10 ^4)=8 x 10 ^6
d. (2 x 10 ^-2) x (4 x 10 ^4= 8 x 10^2

A reasonable estimate for the mass of mustard seed in the jar is the product of the mass per seed and the number of seeds in the jar which can be estimated as

0.002 = 2 × 0.001 =

The Number of seed can be estimated to the nearest whole number as :

Multiplying the estimates :

Therefore, a reasonable estimate is the option B.

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B

Step-by-step explanation:

The mass of a single seed can be written as

There are total of seeds in the jar

Total mass is the multiplication of these both numbers.

Since we want an estimate, we can use 4 instead of 4.3602 in the 2nd number.

The rule to multiply two numbers in scientific notation is:

So using this formula we multiply the 2 numbers and get answer as follows:

Answer choice B is right.

answer: t=3

step-by-step explanation:

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²