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kati45 [8]
3 years ago
6

Simplify the expression. (1423 – 2x2 + 3x – 7) – (328 + 142 – 10)

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
3 0

Answer:

-2x^2+3x+956

Step-by-step explanation:

If you want to do math easier, just look up symbolab.com and it will show you the right answers and how to do the problems.

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The height of an equilateral triangle h equals 3√2s where s is the length of a side. Suppose an equilateral triangle is made wit
nirvana33 [79]

Answer:

The correct option is;

B. a. Whole number b. Irrational number

Step-by-step explanation:

The height, h of the equilateral triangle = 3·√2·s

The item by which equilateral triangle is made = 2-inch toothpicks

Therefore, we have;

The sides of the equilateral triangle = Comprises multiples of 2 inches

Therefore, the sides of the equilateral triangle is a whole number

The height of the triangle is the product of the side and (√3)/2

Therefore, the height of the triangle is an irrational number

The correct option is A. a. Whole number b. Irrational number.

A whole number are the positive counting numbers, 0, 1, 2, ..., while an integer includes negative numbers which is not possible for a real triangle.

4 0
3 years ago
A store marks up all of their merchandise by 70%. The floor price of a scarf is $117.25.
KiRa [710]

Answer:

  $68.97

Step-by-step explanation:

Markup is the difference between the cost of an item and the price at which it is sold:

  cost price + markup = selling price

Here, the markup is said to be 70%. The base for that percentage can be either the cost price or the selling price. The way this question is worded suggests the markup is 70% of the cost price.

So, we have ...

  cost price + 0.70 × cost price = selling price

or

  cost price × (1 + 0.70) = selling price

__

Then, to find the cost price, we can divide by its coefficient in this equation. Doing that gives ...

  cost price = (selling price)/1.70

  cost price = $117.25/1.70 = $68.97

The store's purchase price before the markup for this item was $68.97.

4 0
3 years ago
Expand the expression.<br> 2/7(2s+3)
Mrrafil [7]
\frac{2}{7} (2s + 3) \\  \frac{4s}{7} +  \frac{6}{7}  \\  \frac{4s + 6}{7}
8 0
3 years ago
Find the area of a parallelogram with a height of 2x - 3 and a base of x + 4.
saw5 [17]
Multiply the two as area is base times height.
(2x - 3)(x + 4) \\ 2 {x}^{2}  + 8x - 3x - 12 \\ 2 {x}^{2}  + 5x - 12
4 0
3 years ago
There are 10 candy bars 18 people how many candy bars will each person get? Explain.
fredd [130]

it is 10 divided by 18 which is 0.5
8 0
3 years ago
Read 2 more answers
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