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KiRa [710]
3 years ago
8

Helppp can someone solve this please

Mathematics
1 answer:
Norma-Jean [14]3 years ago
5 0

Answer:

\displaystyle x=-15

Step-by-step explanation:

<u>Solution Of A System Of Equations </u>

A system of linear equations is given as

\displaystyle \left\{\begin{matrix}ax+by=c\\ dx+ey=f\end{matrix}\right.

There are many methods to solve them. We will use the method of reduction

The given system is

\displaystyle \left\{\begin{matrix}2x+3y=45\\ x+y=10\end{matrix}\right.

Multiplying the second equation by -3

\displaystyle \left\{\begin{matrix}2x+3y=45\\ -3x-3y=-30\end{matrix}\right.

Adding the resulting equations

\displaystyle -x=15

\displaystyle x=-15

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Increase 58.50 by 10% working
natka813 [3]

Answer:

Final Value = 58.50 × (1 + 10/100)

Final Value = 58.50 × (1 + 0.1)

Final Value = 58.50 × (1.1)

Final Value = 64.35

8 0
2 years ago
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A small square of side 2x is cut from the corner of a rectangle with a width of 10 centimeters and length of 20 centimeters. Wri
love history [14]
Find the area of the rectangle. You can find the area of a rectangle with the following formula:

A = wl

w = width, and l = length.

Plug in your width and length:

20 * 10 = 200

The area of the rectangle is 200 square centimeters.

The area of a square is also given by width * length. Multiply the sides together:

2x * 2x = 4x^{2}

The area of a square is 4x^2.

Because you're cutting away the square from the rectangle, you will subtract the area of the square from the area of the rectangle. The following equation will be your answer:

200 - 4x^{2} cm^{2}
6 0
3 years ago
Which names are correct for FM−→− ?
fiasKO [112]

Answer with explanation:

⇒A segment , \Bar {AB} is equivalent to \Bar {BA}.

⇒We can assert this by this way, if Distance between Two points A and B is 6 unit, then Distance between B and A will be 6 unit also.

So,

\bar{FM}=\bar{MF}

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Option A

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1.5c - 6 = 7.5 i need help with this problem and i have no one to help me
Lostsunrise [7]

Answer:

c=9

Step-by-step explanation:

Let's solve your equation step by step:

  1. add 6 on both sides
  2. divide 1.5 from the product of 6 and 7.5 (aka 13.5)
  3. you will get C
  4. put 9 in for C.
<h2>1.5c-6=7.5</h2>

1. 1.5c-6+6=7.5+6

1.5 1.5c=13.5

2.\frac{1.5c}{1.5c}=\frac{13.5}{1.5c}

3. C=9

1.5(9)-6=7.5

13.5-6=7.5

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2 years ago
3. Sadie and Josie are asked to wrie an expression equivalent to 3(2x+3y).
Andrews [41]
The answer is A!
Sadie is correct because 3(2x+3y) equals 6x+9y
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2 years ago
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