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abruzzese [7]
3 years ago
15

For: 9 times the sum of 9b and 2

Mathematics
1 answer:
Sloan [31]3 years ago
6 0

Answer:

9(9b+2)

Step-by-step explanation:

The words 'the sum of' mean parenthesis.

And so 9 would be outside the parenthesis and then 9b and 2 would be inside.

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Please help me complete this quiz lol
melomori [17]
I believe the first answer is correct
7 0
3 years ago
A/2.8 x 2.8<br> "A over 2.8 times 2.8"
Jobisdone [24]
A/2.8 • 2.8
Division and multiplication are opposite of each other, meaning they cancel out.
This means that a/2.8 • 2.8 is a.
No matter what a is equal to, the answer is a itself.
Once a is divided by 2.8, it is then multiplied by 2.8, bringing us back to the original value of a.

Answer:
a/2.8 • 2.8 = a

Hope this helps!
7 0
3 years ago
Given that the mass of an average linebacker at Ursinus College is 250 lbs and the radius of a pea is 0.50 cm, calculate the num
Brilliant_brown [7]

Answer:

1.544*10⁹ Linebackers would be required in order to obtain the same density as an alpha particle

Step-by-step explanation:

Assuming that the pea is spherical ( with radius R= 0.5 cm= 0.005 m), then its volume is

V= 4/3π*R³ = 4/3π*R³ = 4/3*π*(0.005 m)³ = 5.236*10⁻⁷ m³

the mass in that volume would be  m= N*L (L= mass of linebackers=250Lbs= 113.398 Kg)

The density of an alpha particle is  ρa= 3.345*10¹⁷ kg/m³ and the density in the pea ρ will be

ρ= m/V

since both should be equal ρ=ρa , then

ρa= m/V =N*L/V → N =ρa*V/L

replacing values

N =ρa*V/L = 3.345*10¹⁷ kg/m³ * 5.236*10⁻⁷ m³ /113.398 Kg  = 1.544*10⁹ Linebackers

N=1.544*10⁹ Linebackers

7 0
3 years ago
What is 2/4 +1/3 equal to?
AlladinOne [14]

Answer:

3/7

Step-by-step explanation:

    2

    4

    1

    3

equals 3 over 7= 3/7

I hope this helps you

6 0
3 years ago
If 596 people voted in the election, how many were over 65 years old?
svlad2 [7]
596*25%=149
149 people over the age of 65 years old voted
3 0
3 years ago
Read 2 more answers
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