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qwelly [4]
3 years ago
13

Robert's father is 4 years older than 3 times Robert's age. His father is 40 years old. Write the equation used to determine Rob

ert's age.
Mathematics
1 answer:
FrozenT [24]3 years ago
8 0

Answer:

robert is 12 years old

Step-by-step explanation:

robert's age=x

40=3x+4

that's the equation

40=3x+4

=36=3x

x=12

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Find the geometric mean of the pair of numbers
Svetach [21]

Answer: a. 55

Step-by-step explanation:

The formula to find the geometeric mean between two numbers a and b is given by :-

G.M. =\sqrt{ab}

The given numbers are : 275 and 11

The geometric mean of 275 and 11 is given by :-

G.M.=\sqrt{275\times11}\\\\\Rightarrow\ G.M. =\sqrt{3025}\\\\\Rightarrow\ G.M.=\sqrt{55\times55}\\\\\Rightarrow\ G.M.=\sqrt{55^2}\\\\\Rightarrow\ G.M.=55

Hence, the geometric mean of 275 and 11 is 55.

So , the correct option is a. 55 .

4 0
2 years ago
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IRINA_888 [86]

Answer:

Step-by-step explanation:

8 3/5 is already in simplest form.  You could write this mixed number as an improper fraction:

43/5

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5 0
2 years ago
5x + 7 = 2x - 8 can anyone say how to solve please ​
SCORPION-xisa [38]

Answer:

x = - 5

Step-by-step explanation:

Given

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4 0
2 years ago
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kolezko [41]

Answer:

70,000

Step-by-step explanation:

66,681 is closest to 70,000 rather than 60,000.

6 0
2 years ago
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3 years ago
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