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AnnyKZ [126]
3 years ago
14

the average of three numbers is 6. the average of the first and second is 7, what is the value of the third number?​

Mathematics
1 answer:
KIM [24]3 years ago
6 0

Answer:

4

Step-by-step explanation:

the sum of the first two numbers is 7*2=14 and the sum of the three numbers is 6*3=18 then you subtract the answers giving you 4

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the odometer in Mr Washington's car does not work correctly the odometer recorded 13.2 miles for his last trip to the hardware s
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12 percent is the error.
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4 years ago
Solve 2x+ 3=7<br> please ​
blondinia [14]

2x+3=7

2x+3-3=7-3

Whenever moving a number to the other side you have to change the sign .

2x= 4

x=2

7 0
3 years ago
4 Amanda and Blake played a board game. In the game, Amanda had
ddd [48]

The amount of money Blake have in the end is  3560 + (2740 - x)

In the game Amanda had $2740 in play money and Blake had $3560 in play money.

Amanda had to give some money she possessed.

Let

what remains after Amanda gave the money = x

Therefore, Blake will have the following money at the end .

The amount she gave to Blake = (2740 - x)

Blake money = 3560 + (2740 - x)

learn more here: brainly.com/question/16895110?referrer=searchResults

6 0
2 years ago
Square ABCD was translated using the rule (x, y) → (x – 4, y + 15) to form A'B'C'D'. What are the coordinates of point D in the
Vitek1552 [10]

Answer:

D = (13, - 23 )

Step-by-step explanation:

Given the translation rule

(x, y ) → (x - 4, y + 15 )

To go in the reverse direction, that is image to original, then, reverse the operations in the translation rule.

(x , y ) → (x + 4, y - 15 ) , thus

D'(9, - 8 ) → D(9 + 4, - 8 - 15 ) → D(13, - 23 )

3 0
3 years ago
Read 2 more answers
Find the missing length indicated​
GaryK [48]

Answer:

240

Step-by-step explanation:

We are given a right triangle. Based on the leg rule, the following equation shows how the length of a leg in a right triangle relates with the segments connected to the hypotenuse:

Hypotenuse/leg = leg/part

Where,

Hypo = 400

Leg = x

Part = 144

Substitute

400/x = x/144

Cross multiply

400*144 = x*x

57,600 = x²

√57,600 = x

240 = x

x = 240

8 0
3 years ago
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