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Aneli [31]
3 years ago
13

PLEASE HELP MEEEEE

Mathematics
1 answer:
Elena-2011 [213]3 years ago
5 0

Answer:

a = 36 and a = 27

Step-by-step explanation:

The geometric mean of two numbers is the square root of the product of the two numbers.

Say for example we have the numbers x and y, the geometric mean z is mathematically;

z = √xy

For the first question, our z is 12, x and y are 4 and a respectively.

12 = √4a

square both sides

144 = 4a

a = 144/4

a = 36

For the second question

z is 9, x and y are 3 and a respectively

9 = √3a

square both sides

81 = 3a

a = 81/3

a = 27

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Answer:

Step-by-step explanation:

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3 years ago
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The ice cream shop sells sundaes for $2 each and banana splits for $3 each. One day, the shop sold 8 more sundaes than banana sp
Nataliya [291]

Answer:

$82 sundaes

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Step-by-step explanation:

Step one :

Given data

Cost of sundaes =$2 each

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Let the number of sundaes bought be x

And the number of banana split bought be y

The total is x+y

The shop sold 8 more Sundaes than the Banana split

x=8+y—-------1

Total amount made = $156

Therefore the system of equation for the situation is

x=8+y----—----------1

2x+3y=156---------2

But x=8+y

8+y+y=156

8+2y=156

2y=156-8

2y=148

Divide both sides by 2

y=148/2

y=74

On That day they sold $74 banana split

And also they sold x=8+74=$82 sundaes

4 0
3 years ago
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coldgirl [10]

Answer:

4, 16, 25, x^{2}, x^{20}\\.

Step-by-step explanation:

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storchak [24]


The answer is 2.3 right.


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a_sh-v [17]
The answer is 31
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