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AfilCa [17]
3 years ago
10

Find the product mentally.

Mathematics
2 answers:
jonny [76]3 years ago
5 0
(2j+7)(2j−7)

=(2j+7)(2j+−7)

=(2j)(2j)+(2j)(−7)+(7)(2j)+(7)(−7)

=4j2−14j+14j−49

=4j2−49

alexira [117]3 years ago
3 0

Answer:

B

Step-by-step explanation:

2j*2j=4j^2

7*-7=-49

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An electronics store makes a profit of $72.00 for every television sold and $90.00 for every computer sold. The manager’s target
viktelen [127]

Answer:

<h2>Option A, C and D is the three possible solution.</h2>

Step-by-step explanation:

Each Television earns $72 and each Computer earns $90.

The manager’s target is to make at least $360.00 a day.

It is <u>not clarified the exact number of Televisions and Computers</u>.

Hence, as per the given condition, 72x + 90y \geq  360\\8x + 10y \geq  40\\4x + 5y \geq  20.

Now we just need to check the given options, whether they satisfy the above equation, or not.

Except the option B, each inequality indicates a value greater than 360.

Hence, option B can not be the possible solution.

4 0
3 years ago
4x - 5 = 7 solve for X
Morgarella [4.7K]

Answer:

x=3

Step-by-step explanation:

move the constant to the right hand side and change

8 0
3 years ago
Read 2 more answers
A rectangular table top has dimensions as 1.52m and 0.75m. Find the perimeter in cm
Elis [28]

That is a question about perimeter of rectangle.

The perimeter of a geometric shape is the sum of the value of the all sides.

In a rectangle, the opposite sides are cogruentes (equals). For example, look at picture below. In that rectangle, the sides AB and DC are equals, and the sides AD and BC are equals.

So, the sides of that rectangular table are: 1.52m, 1.52m, 0.75m and 0.75.

Therefore, the perimeter of that rectangle is 1.52+1.52+0.75+0.75= 4.54m.

But that is not the final answer because that is the perimeter in meters and the question want the answer in centimeters.

1 meter has 100 centimeter, so we need to multiplicate the perimeter by 100.

Thus, the perimeter of that rectangular table is 4.54\cdot 100 = 454cm.

3 0
2 years ago
WHATS THE ANSWER?? answer ASAP NO FILE
Angelina_Jolie [31]

Answer:

a

Step-by-step explanation:

it is a because the shape is moving to the side

3 0
2 years ago
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1. How many fourteenths are in 5/14?
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