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stepan [7]
3 years ago
10

Robert is 10 years older than her brother. In 2 years, Robert will be three times as old as his brother. How old are they now?

Mathematics
1 answer:
valentina_108 [34]3 years ago
6 0
Robert is 13 and his brother is 3 y.o.
X... brother’s age
X+10... Robert’s age
X+10+2... Robert’s age in 2 years
X+2...Brother’s age in 2 years
X+10+2/x+2=3
X=3
X+10=13
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Select from the drop - down menus to correctly complete each statement
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As an example, you can have the simple argument "if it rains, then it gets wet outside". So the box on the left would be "it rains" and the box on the right would be "it gets wet outside". An arrow connecting the two shows the logical flow of how the argument is set up.

See the diagram below.

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3 years ago
Find mFE<br> A) 52°<br> C) 76°<br> B) 93°<br> D) 112°
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Answer:

76 degrees

Step-by-step explanation:

GE = 180 since it is a straight line

GE = GR + FE

180 = 7x+6 +6x-8

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Divide by 13

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14 =x

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FE = 6x-8

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kotegsom [21]

Step1: Find the area of the triangular lawn

             Given, base of the triangle is y metres and the height is z metres

             Area of the triangle =

2

1

​

× base × height

             Therefore, area of the triangular lawn =

2

1

​

yz metre  

2

.

Step 2:Find the cost of planting the grass

             Rate of planting the grass is Rs. x per square metre.

             Therefore, the cost of planting the grass on a triangular lawn =cost per square meter × area of the triangular lawn

              =x×

2

1

​

yz=

2

1

​

xyz

Hence, the cost of planting the grass on a triangular lawn whose base is y metres and  height is z metres is Rs.  

2

1

​

x y z.

Step-by-step explanation:

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