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mylen [45]
3 years ago
9

Bài 2: Tìm x biết

Mathematics
1 answer:
Svetllana [295]3 years ago
3 0

Answer:

76

Step-by-step explanation:

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Which equation has no real solutions
Pavel [41]

Answer:

the third one

Step-by-step explanation:

because if we calcul Δ

we get a negative number

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2 years ago
Do the data in the table represent a direct variation or inverse variation? Write an equation to model the data in the table?
notsponge [240]

Based on the given data; the table represent an inverse variation and the equation that model the data in the table is y = 8/x

<h3>Variation</h3>

  • Direct variation

y = k × x

4 = k × 2

4 = 2k

k = 4/2

k = 2

when y = 2 and x = 4

y = k × x

= 2 × 4

y = 8

  • Indirect variation

y = k/x

4 = k / 2

8 = k

when y = 2 and x = 4

y = k/x

2 = k/4

2 × 4 = k

k = 8

So,

y = k/x

y = 8/x

Learn more about variation:

brainly.com/question/6499629

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5 0
2 years ago
Come on smart heads . Earn you some points with this easy problem . I know you can do it !!!
Anna [14]

{(x + 22)}^{2}
6 0
2 years ago
Estimate the perimeter and area of the figure to the nearest whole number. Please help!!
solniwko [45]

Answer:

29 ; 37

Step-by-step explanation:

The figure is composed by a square, a rectangle, and a right triangle

The perimeter of the square is 6 units

The perimeter of the rectangle is 10 units

The triangle is composed by a side of 6 units and a side of 5 units

The third side can be find with the Pythagorean theorem

\sqrt{6^2 + 5^2} = \sqrt{36 + 25} = \sqrt{61} = 7,81025

The total perimeter is

6 + 10 + 5 + 7,81025 = 28,81025 = 29

Area of the square = 2^2 = 4 square units

Area of the rectangle = 6 x 3 = 18 square units

Area of the triangle =  (5 x 6)/2 = 15 square units

Total area = 4 + 18 + 15 = 37 square units

8 0
2 years ago
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Solve each system by graphing.
ycow [4]

Answer:

(2,-1)

Step-by-step explanation:

Solved using math.

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2 years ago
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