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andrey2020 [161]
10 months ago
7

Can I find a tutor to help me bro ?

Mathematics
1 answer:
nignag [31]10 months ago
3 0

Solution

Given the quadratic equation:

x² + 2x + 7 = 21

x² + 2x + 7 - 21 = 0

x² + 2x - 14 = 0

a = 1, b = 2, c = - 14

(1) The number of solutions of a given quadratic equation is determine by the discriminant.

From the given values;

(2)² - 4(1 x -14) = 4 + 56 = 60

60 > 0 ( 2 solutions)

1 positive solution and 1 negative solution

Thus, number of positive solutions to this equation is one

(2) The greatest solution or positive solution to the equation is calculated as;

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X2 + 5x - 50 A) (x + 25)(x - 2) B) (x - 5)(x + 10) C) (x - 10)(x + 5) D) (x + 2)(x - 25)
olga2289 [7]

Answer:

The correct answer is B) (x - 5)(x + 10)

Step-by-step explanation:

The constants at the end of the parenthesis need to add to the middle term

10 + -5 = 5

And they need to multiply to the end term

-5 * 10 = -50

This makes it the correct choice.

3 0
2 years ago
What is the ratio 25 to 45 as a simplified fraction​
fenix001 [56]
Reducing the fractions, it is also true that:
Part A = 5/14 of the whole
Part B = 9/14 of the whole
6 0
3 years ago
Evaluate "four dollars less than the cost<br> of a sweater" if a sweater costs $22<br> a<br> a
AleksAgata [21]
  • The actual cost of the sweater is $18

The question says to evaluate the cost of four dollars less than the cost of a sweater.

To do this, what we have to do is to create a mathematical equation of it.

Less than always insinuates that we are to subtract, and as such, we are going to subtract four dollars from the cost of the sweater to get our final answer.

Four dollars less than the cost of a sweater that costs $22 is

22 - 4 = $18

Learn more about evaluating cost here brainly.com/question/14315509

7 0
2 years ago
Simplify 3f-2f+f I need a answer for that please
vlada-n [284]

Answer:

2f

Step-by-step explanation:

3f-2f+f | Given

1f + f | Subtract 3f and 2f

2f | Add 1f and 1f.

7 0
2 years ago
Tom brought a lawnmower on sale for 75. it was on sale for 75% of the original cost how much was original cost?
stepan [7]
Hey You!

This question is asking us, "75 is 75% of what number?"

75 × 100 / 75 = 100

The original cost was $100.
3 0
2 years ago
Read 2 more answers
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