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ahrayia [7]
2 years ago
9

3 cm 7 cm 4 cm 8 cm area​

Mathematics
1 answer:
ryzh [129]2 years ago
4 0

Answer:

672 square inches

with area, multiply the side(s) by themselves for a single number, or their following numbers for more than 2 numbers.

Example

  • 18in x 18in = 324 square inches
  • 4in x 2in x 5in x 9in = 360 square inches

hope this helps!

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tomas wrote an equation 4/5x-8=. Finish the equation so that the equation will have no solution. Explain how you know.
Pepsi [2]

Answer:

Right part: \dfrac{4}{5}x+a, where a\neq -8.

Step-by-step explanation:

Linear equation have no solution if it is impossible for the equation to be true no matter what value we assign to the variable x.

The left part of the equation Tomas wrote is

\dfrac{4}{5}x-8.

The right part of the equation should be of the form

\dfrac{4}{5}x+a,

where a\neq -8.

In this case, the equation will take look

\dfrac{4}{5}x-8=\dfrac{4}{5}x+a,\\ \\-8=a.

Since a\neq -8, this equality is always false.

Remark: 1) If a=8, the equation \dfrac{4}{5}x-8=\dfrac{4}{5}x+a is equivalent to the equation

\dfrac{4}{5}x-8=\dfrac{4}{5}x-8,\\ \\0=0

and the lest equation has infinitely many solutions.

2) When coefficient at x differs from \dfrac{4}{5}, the equation has unique solution.

6 0
3 years ago
Jenny paid 1/4 of her car loan so far she has paid 900 dollars what was the total amount of the loan.
alex41 [277]
1/4 x 900 = 225.00
225.00 is the total
4 0
3 years ago
Z <br> 3<br> +4<br> z <br> 2<br><br> ​ <br> + <br> z <br> 3<br> +4<br> 4z <br> 2<br> −6z
sergeinik [125]

Answer:

Step-by-step explanation:

7 0
3 years ago
The shape in the figure is constructed from several identical squares. If the side of each square is 1 unit, what is the area an
Katen [24]

Answer:

Area = 7 square units

Perimeter = 14 units

Step-by-step explanation:

The shape is made up of 7 identical squares and, we are told the side length of each square is 1 unit.

==>Find area of the shape by calculating the area of 1 square, then multiply by the number of square used in the construction.

Thus, area of 1 square = s² = 1² = 1 square units.

Area of shape = 7 × 1 square units = 7 square units

==>Find the Perimeter of the shape by adding all the lengths of the boundary formed by the square to make up the shape.

(Check attachment to understand how we got the measurement of the boundary)

<em>The perimeter = 1 + 1 + 1 + ½ + ½ + 1 + 1 + 1½ + ½ + 1 + 1 + 4 = 14 units</em>

<em />

8 0
3 years ago
I WILL GIVE BRAINLIST!!<br> Showthat (2x+i)(2x−i) = 4x2 +1
kherson [118]

(2x + I) (2x-I) = 4x^2 + 1

Using the complex arithmetic rule:

(A + bi)(a-bi) = a^2 + b^2

A would be the 2x and b would be the i

So you would have:

(2x)^2 + (i)^2

(2x)^2 = 2x times 2x = 4x^2

i ^2 = 1

Final answer is 4x^2 + 1

4 0
3 years ago
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