He sum of four and the product of three and a number x.

Mathematics

1 answer:

nadezda [96]3 years ago

8 0

Answer:

The sum of four and the product of three and a number x is ...

Now we are dealing with an unknown figure,

The statement goes;

The sum of

and the product of

and a number

The word sum is represented by addition

The word product is represented by multiplication

Hence;

4 + 3 × x

4 + 3 x → Statement

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<h3>Quadrilaterals</h3>

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<h3>System of Linear Equations</h3>

System of linear equations is the given term math for two or more equations with the same variables. The solution of these equations represents the point at which the lines intersect.

The question gives:

Perimeter=28cm

Area= 42 cm²

If the perimeter is the sum of all sides of the rectangle, you have:

Perimeter= 2b+2h=28

If the area of the rectangle is 42cm², you have:

Area=bh=42 cm²

You can write a system of linear equations.

2b+2h=28 (1)

bh=42 (2)

From equation 2, you have $b=\frac{42}{h}$ . Then, you can replace it in equation 1.