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pav-90 [236]
3 years ago
10

_______ quadratic equations in standard form can be solved

Mathematics
1 answer:
In-s [12.5K]3 years ago
3 0

The answer is All

Step-by-step explanation:

It has been proven that all quadratic equations can be solved with the quadratic formula.

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The model represents x2 – 9x + 14.
Stels [109]

Factorize the quadratic trinomial x^2 - 9x + 14 by the rule:

ax^2+bx+c=a(x-x_1)(x-x_2), \text{ where } x_1,\ x_2 \text{ are its roots. }

1. Find the roots:

D=(-9)^2-4\cdot 14=81-56=25,\ \sqrt{D}=5,\\ \\ x_1=\dfrac{9-5}{2}=2,\ x_2=\dfrac{9+5}{2}=7.

2. Factorize the polynomial:

x^2 - 9x + 14=(x-2)(x-7).

3. Only factor x-2 is given in options, then the correct choice is B.

6 0
3 years ago
Read 2 more answers
The perimeter of a rectangular ink pad is 36 centimeters. The ink pad is 12 centimeters wide. How tall is it?
Nikitich [7]

Answer:

6 cm

Step-by-step explanation:

36-24=12 and 12/2 is 6

Hope this helps!!!!!!!!!!!!!!

3 0
3 years ago
Q#1 IF CORRECT ILLL BIVE U BRAINLIEST NEED FAST PLS
Orlov [11]

Answer:

The amount Chris started within his savings is $44. option C

Step-by-step explanation:

Amount Chris saved = $xAmount spent on video games = 1/2xAdditional amount earned = $10Total = $321/2x + 10 = 32subtract 10 from both sides1/2x = 32 - 101/2x = 22divide both sides by 1/2x = 22 ÷ 1/2x = 22 × 2/1x = $44Therefore, the amount Chris started within his savings is $44. option C

Hope this helped !!!!

8 0
2 years ago
Read 2 more answers
Convert a markup of 15% on selling price to its equivalent markup on cost.
spayn [35]

Answer:

option: D is correct. (  (D) a markup of 15% on selling price is equivalent to a 85% markup on cost ).

Step-by-step explanation:

" Markup is the percentage difference between a product's cost and its selling price "

Since we are asked to Convert a markup of 15% on selling price to its equivalent markup on cost.

As there is a markup of  15% on selling price. Hence the cost of the product would be (100-15)%=85% of the selling price.

<em>Hence, a markup of 15% on selling price is equivalent to a 85% markup on cost.</em>

<em>Hence, option D is true.</em>

5 0
4 years ago
How long is the base of a parallelogram if it has an area of 100 m2 and a height of 5 m?
DochEvi [55]
   
\displaystyle\\&#10;\bold{A= b \times h} \\  \\ &#10;\bold {\Longrightarrow~~~ b =  \frac{A}{h} =   \frac{100}{5} =}~  \boxed{\bold{20~m }}



4 0
3 years ago
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