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vitfil [10]
3 years ago
15

I don't know how to work this problem out

Mathematics
1 answer:
madam [21]3 years ago
4 0
1/5(x-y) = 1
x+y = 9

x-y = 5 (x5)
x+y = 9

First you want to create both equations so at least one of the variables (x or y) are the same in both equations, so that is why I multiplied the top one by 5, you multiply the whole equation (both sides)

2x = 14
x = 7

Then you either Plus or minus one from the other, I plused the top one onto the bottom one, then solved for x

7 + y = 9
y = 2

Then put x back into one of the first two equations to get Y


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Tanya has a garden with a trench around it. The garden is a rectangle with length 2.5m and width 2m. The trench and the garden t
Drupady [299]

Answer:

5.5m^2

the area of just the trench is 5.5 m^2

Step-by-step explanation:

The Area of trench only is the total area(trench and garden) minus the Area of garden

Area of trench only = total area(trench and garden) - Area of garden

Area = length × breadth

Substituting the given dimensions;

Total area = 3.5 × 3 = 10.5 m^2

Area of garden = 2.5×2 = 5 m^2

Area of trench only = 10.5 m^2 - 5 m^2

Area of trench only = 5.5m^2

the area of just the trench is 5.5 m^2

8 0
3 years ago
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H>
arsen [322]

Answer:

C

Step-by-step explanation:

3*-4

3 0
3 years ago
Three apples weigh about a pound about how much would one apple cost round to the nearest tenth
7nadin3 [17]
3 apples weigh 1 lb.....so 1 apple would weigh 1/3 = 0.3 lbs
5 0
2 years ago
The left and right page numbers of an open book are two consecutive integers whose sum is 335 find these page numbers.
almond37 [142]

Answer:

167 and 168

you divide 335 by 2, you get 167.5

so it's gonna be either 166 and 167 or 167 and 168

then you add up 166 and 167, you get 333 (so this is not the answer)

it means the answer is <u>1</u><u>6</u><u>7</u><u> </u><u>a</u><u>n</u><u>d</u><u> </u><u>1</u><u>6</u><u>8</u> (167+168=335)

hope it helped, sorry for my bad english

if something is not clear, write a comment I'll answer

3 0
2 years ago
What is the area of this triangle 12in 3in
grin007 [14]

Answer:

Step-by-step explanation:

To find the area of a triangle, multiply the base by the height, and then divide by 2. The division by 2 comes from the fact that a parallelogram can be divided into 2 triangles. For example, in the diagram to the left, the area of each triangle is equal to one-half the area of the parallelogram.

7 0
2 years ago
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