1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natulia [17]
3 years ago
6

PLEASE HELP ME! ITS DUE TODAY!!!!

Mathematics
2 answers:
amid [387]3 years ago
4 0
X = -5, X = 1/2 Hope this helped!
bixtya [17]3 years ago
3 0

Answer:

x = -5, \frac{1}{2}

Step-by-step explanation:

The given equation is 2x² + 9x - 5 = 0

We have to find the values of x.

We know that if in a quadratic equation ax²+ bx + c = 0, b²- 4ac > 0 then there will be two real roots of the equation.

In the given equation b²- 4ac = (9)²-4(2)(-5) = 81 + 40

                                                = 212 > 0

So there will be two real roots.

Now we will factorize the given equation.

2x² + 9x - 5 = 0

2x² + 10x - x - 5 = 0

2x(x + 5) - 1(x + 5) = 0

(2x - 1)(x + 5) = 0

So two roots will be 2x - 1 = 0

x = \frac{1}{2}

and x + 5 = 0

x = -5

Therefore, x = -5, \frac{1}{2} are the solutions.

You might be interested in
Number 14 please thanks
katrin [286]
Your problem is:
$35.00 is what percentage of $437.50?

If you are given a part and the whole, and you want to know what percent the part is of the whole, divide the part by the whole and multiply by 100.

In this case, the whole is $437.50.
The part is $35.00.

35/437.5 * 100 = 8%

3 0
3 years ago
When x represents whole numbers less than 200, the function f(x) = 2x - 20 represents the profit earned from selling x carnation
solmaris [256]

Answer:

260

Step-by-step explanation:

When x represents whole numbers less than 200, the function  

f(x) = 2x - 20 .......... (1)

represents the profit earned from selling x carnations for a school fund-raiser.

Therefore, the profit earned from selling 140 carnations for the school fund-raiser will be given by the equation (1) as

f(140) = 2(140) - 20 = 280 - 20 = 260.

Therefore, 260 is the value of f(140). (Answer)

8 0
4 years ago
The price for a gallon of gas is $4.99 how much is it going to cost for 20 gallons ?
kaheart [24]
You would have to put 4.99 times 20 which will cost 99.80 for 20 gallons.
3 0
2 years ago
Read 2 more answers
What’s The Answer Of This? Please Answer ASAP
Lapatulllka [165]

Answer:

c) 80⁰

isosceles triangle, two sides and angels are equal.

Step-by-step explanation:

180⁰= full triangle

80⁰+20⁰=100⁰

180-100=80⁰

5 0
2 years ago
An F5 tornado is classified as having mean wind speeds greater than 261 mph. In an effort to classify a recent tornado, 20 wind
Anna35 [415]

Answer:

Type 2 error

Step-by-step explanation:

H0 : μ = 261

H0 : μ > 261

By failing to reject H0 ; when the it is false. This means accepting null hypothesis when it is actually FALSE. Then a type 2 error has been committed.

This is different from a type 1 error whereby the null hypothesis is rejected when it is actually TRUE.

Hence, by finding no evidence to reject the null hypothesis during statistical testing when the actual windspeed of an F5 tornado during statistical testing is actually greater than 261 mph.

6 0
3 years ago
Other questions:
  • suppose that you decide to spend no more than $30 for tickets. What are the possible combinations of small and large rides that
    11·2 answers
  • a computer randomly picks nine 2-digit numbers greater than 49. Find the odds that the number picked is a multiple of 5
    11·1 answer
  • Find the domain of the function f(x)=24/x^2-20x+96
    8·1 answer
  • The segment shown below could form a triangle 7 9 12
    8·1 answer
  • Can someone please help me with this question ASAP...
    15·1 answer
  • Ms. Wilson draws a model of the factorization of a polynomial with integer factors. Her model is partially complete.
    10·1 answer
  • Work out the area of the parallelogram.<br> Not drawn<br> accurately<br> 13 cm<br> 79°<br> 21 cm
    12·1 answer
  • How much fencing is needed to enclose a rectangular garden that measures 65 feet by 17 feet
    11·2 answers
  • Solve -4k-6=1.2<br><br><br> it says i have to add more words so theses are random
    13·1 answer
  • This was it!!!!!!!!!!!!!!! The model
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!