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solong [7]
2 years ago
6

50 points

Mathematics
2 answers:
alexgriva [62]2 years ago
8 0

Answer:

13.78

Step-by-step explanation:

21.2x + c = 5.3(4x - 2.6)

open the bracket

21.2x + c = 21.2x - 13.78

collect like terms

c + 13.78 = 21.2x - 21.2x

c + 13.78 = 0

c = -13.78

mixer [17]2 years ago
7 0

Answer:

c = -13.78.

Step-by-step explanation:

21.2x + c  ≡ 5.3(4x - 2.6)

21.2x + c  ≡ 21.2x - 13.78

Equating constant terms:

c = -13.78.

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Ganezh [65]

x = 1

y = -3/2

Solution: (1, -3/2)

//Hope it helps.

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3 years ago
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2<br>If A=<br>4 3<br>find A1 using<br>elementary row operations.​
MA_775_DIABLO [31]

Answer:   A^{-1}=\left[\begin{array}{cc}\frac{3}{2}&-\frac{1}{2}\\-2&1\end{array}\right]

<u>Step-by-step explanation:</u>

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\dfrac{1}{2}Row\ 1\rightarrow\left[\begin{array}{cc}1&\frac{1}{2}\\4&3\end{array}\right]=\left[\begin{array}{cc}\frac{1}{2}&0\\0&1\end{array}\right]

Row\ 2 -4 \ Row\ 1\rightarrow \left[\begin{array}{cc}1&\frac{1}{2}\\0&1\end{array}\right]=\left[\begin{array}{cc}\frac{1}{2}&0\\-2&1\end{array}\right]

Row\ 1-\dfrac{1}{2}\ Row\ 2 \rightarrow \left[\begin{array}{cc}1&0\\0&1\end{array}\right]=\left[\begin{array}{cc}\frac{3}{2}&-\frac{1}{2}\\-2&1\end{array}\right]

5 0
3 years ago
The area of a rectangular shaped cake is 128 cm2. The width is 8 cm. What is the length of the cake?
SSSSS [86.1K]
Length of the cake is 16 cm. 
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Calculate s_75 for the arithmetic sequence defined by {a_n}={67-2n}
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Answer:

we go to the same school

Step-by-step explanation:

kik me at my name

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Theo is building a garden against his house. He bought two pieces of wood that are each five feet long. He wants to create a tri
liubo4ka [24]
Given:
two pieces of wood that are 5 feet long each.
form a triangle with a perimeter of a whole number.
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Since two sides are already of the same length, he can create an isosceles triangle. 

An isosceles triangle has two equal sides and two equal angles.

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An equilateral triangle has three equal sides and three equal angles, measuring 60° each angle.
7 0
3 years ago
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