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timofeeve [1]
2 years ago
9

25. Save the simultaneous equations 2x-y=4;x+y=5​

Mathematics
1 answer:
Helen [10]2 years ago
3 0

Answer:

x = 3

Step-by-step explanation:

2x - y = 4

x + y = 5

y = 5 - x

2x - (5 - x) = 4

2x + x - 5 = 4

3x = 9

x = 3

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PLEASE HELP THANK YOU
arsen [322]

\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}

Actually Welcome to the Concept of the Similarities.

Since here, first figure is a Triangle, hence similarity of a triangle is given by ratio of it sides and make them equate,

hence for,

1.) 16/12 = x/9 ===> 4/3 = x/9 ===> x = 9*4/3 ==> x = 36/3

hence the value of x is 12 , ===> x = 12 .

2.) here,in the case of a Reactangle the relation is such that, length = 2* breadth,

hence we apply the relation,

x = 2*4.5 ===> x = 9 units.

5 0
3 years ago
Victoria renovated a house for $71,000. If she paid 506,000 for the house, what is the percent of the original cost did she spen
castortr0y [4]

Answer: this is rounded out, and an estimate but...

Step-by-step explanation:

It appears to be 14.03% I could be wrong, but this was calculated so maybe not.

8 0
3 years ago
An architect creates a scale model of a building with a scale of 3 inches =11 feet of the actual width of the building is 121 fe
Tomtit [17]

Answer:

The width of the scale model is 33 inches.

Step-by-step explanation:

This question is solved making a relation with the scale model.

In the scale, 3 inches are worth 11 real feet.

The actual width of the building is 121 feet, so we find it's scale by a rule of three.

3 inches - 11 feet

x inches - 121 feet

11x = 121*3

Simplifying by 3, both sides

x = 11*3 = 33

The width of the scale model is 33 inches.

5 0
3 years ago
Please help me I’m crying right now
Semenov [28]

Answer:

24ft²

Step-by-step explanation:

Dude. Go back and relearn the concept man. This is the third time you've been asking the same subject.

Area of triangle = ½BH = ½(6)(8) = 24

5 0
3 years ago
Read 2 more answers
Tina reads at least 30 minutes each day. Write an enequality to show how much Tina reads. T = 30 T < 30 T ≥ 30 T ≤ 30
svp [43]

Answer:

T\geq 30

Step-by-step explanation:

Let

T ----> the number of minutes that Tina read each day

we know that

The word "at least" means "greater than or equal to"

so

The inequality that represent this situation is

T\geq 30

All real number greater than or equal to 30 minutes

7 0
3 years ago
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