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svet-max [94.6K]
1 year ago
6

Ellen is currently twice as old as Maria, but in 6 years, Maria will be 2/3 as old as Ellen. How old is Ellen now?​

Mathematics
1 answer:
melomori [17]1 year ago
3 0
7 this is right beacuase it is trust
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Calculate the total surface area of the pyramid. Show your work!
Vinil7 [7]

Answer: 22.44

Step-by-step explanation:

Base × Height /2 → (3 × 2.24)/2

3.36 · 4 = 13.44

13.44 + 3²

22.44

7 0
3 years ago
Find the determinant of G
artcher [175]
The determinant is found by the formula ad-cb

where the letters are:  a and b is the top row and c and d is the bottom row
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24-0 = 24
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3 0
3 years ago
The perimeter of a square newspaper ad is 40 centimeters. How long is each side?
Katyanochek1 [597]
The answer is:  "10 cm" .
____________________________________
Method 1)
____________________________________________
2L + 2w = 40 ;  Since the formula for perimeter of a rectangle (Note: a square is a rectangle) is:

                         P = 2L + 2w ;  Note:  L = length; w = width; P = perimeter;
______________________________________________________
 Factor out a "2":
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" 2L + 2w = 40" ;

2 (L+ w) = 40;

Divide each side of the question by "2" ;
____________________________________
         [2 (L + w)] / 2  = 40 / 2 ;
____________________________________
 to get:  (L + w) = 20 ;

Note:  this "rectangle is a square" ; so L= w".
__________________
20 /2 = 10 ;

L + w = 10 + 10 = 20.

This is a square, so each side of the square is the same length.

Each side is:  10 cm .
______________________________________________
Method 2)
______________________________________________

We are given: The perimeter (sum of the lengths of all sides) of a square is "40 cm."  Since a square has 4 sides of equal length:
     Each side is:  40 cm / 4 = 10 cm.
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6 0
2 years ago
Help Please! <br><br> 5=(2m-b)/(m+b)
finlep [7]

Answer:

B= -1/2m

Step-by-step explanation:

Ion know wat your solving for buh theres b

6 0
3 years ago
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Simplify: 6(5x - 2) - (3x - 4)​
Sloan [31]

Answer:

27x-8

Step-by-step explanation:

6(5x-2)-(3x-4)\\30x-12-3x+4\\27x-8

7 0
2 years ago
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