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
Black_prince [1.1K]
3 years ago
9

Write the quadratic equation whose roots are 4 and 5, and whose leading coefficient is 4.

Mathematics
1 answer:
Umnica [9.8K]3 years ago
3 0

Answer:

<u>Answer</u><u>:</u><u> </u><u>4</u><u>x</u><u>²</u><u> </u><u>-</u><u> </u><u>9</u><u>x</u><u> </u><u>+</u><u> </u><u>2</u><u>0</u><u> </u>

Step-by-step explanation:

• General quadratic equation:

{ \rm{ {x}^{2}  - (sum \: of \: roots)x + (product \: of \: roots) }}

• sum of roots → 4 + 5 = 9

• product of roots → 4 × 5 = 20

• substitute:

{ \boxed{ \rm{4 {x}^{2}  - 9x + 20 }}}

You might be interested in
Calculate the total installment price the carrying charges in the number of months needed to save them money at the monthly rate
masha68 [24]

Answer:

  • the total installment is $936
  • the carrying charges are $186
  • the monthly rate to buy the items are  19.23 or 20 months

Step-by-step explanation:

$39 for 24 months comes to ...

$39 × 24 = $936

The "carrying charges" are the difference between the cash price and the installment price:

$936 -750 = $186

 Saving at the rate of $39 per month, it would take ...

  $750/$39 = 19.23 months   about 20 months to save up the cash price.

Often, such savings would come from a once-a-month paycheck, so it would take more than 19 such paychecks to save the required amount.

hope it will help :)

3 0
3 years ago
Select all that apply to describe the association of this scatterplot
raketka [301]
Negative, Nonlinear,
I hope this helped:)
6 0
3 years ago
Luke grew some carrots in his garden. Their weights, in grams, are listed below.
Arisa [49]

Answer:

The bottom right histogram is the correct one.

Step-by-step explanation:

Carrots  weight 40-49 kg = 2

 ... of weight 50-59 = 6

 ...  of weight 60-69 = 4

 ..   of weight 70-79 = 1

8 0
3 years ago
If Allison wants to find 80% of 630, which table should she use?
maks197457 [2]

Answer:

A

Step-by-step explanation:

On edge

6 0
3 years ago
Read 2 more answers
Nine voltage measurements in a circuit have produced the following values: 12.09, 12.05, 11.94, 11.99, 12.12, 12.05, 12.02, 11.9
Debora [2.8K]

Answer:

we can not reject any value

Step-by-step explanation: From data we can test the highest and the lowest value to evaluate if one of these values are out of certain confidence Interval

If we established CI = 95 % then  α = 5 % and  α/2 = 0,025

From data we find the mean of the values

μ₀  = 12,03   and σ = 0,07

From z table we find z score for 0,025 is  z(c) = ± 1,96

So limits of our CI are:

12,03 + 1,96 =  13,99

12,03 - 1,96 = 10,07

And all our values are within  ( 10,07 , 13,99)

So we can not reject any value

4 0
3 years ago
Other questions:
  • Which of the following best illustrates Closure of Addition for the set of Whole numbers?
    8·2 answers
  • What is the solution to the system of equations graphed below? y = x - 2 y = 4x - 5
    13·1 answer
  • At the movie theater, child admission is $5.30 and adult admission is $9.10. On Tuesday, three times as many adult tickets were
    12·1 answer
  • SOMEONE PLEASE HELP ME ASAP PLEASE!!!​
    8·2 answers
  • Suppose that a box is being towed up an inclined plane as shown in the figure. Find the force w needed to make the component of
    11·1 answer
  • HELP ME PLS!!!!!!!!!!!!
    13·1 answer
  • Solve the simultaneous linear equations using substitution method
    12·1 answer
  • Use the Distributive Property to write an expression equivalent to 7(3x + 9)
    10·1 answer
  • Find the size of angle a
    13·1 answer
  • Find the Expression OF this equation.<br>c/3 / ac/4<br><br>QUESTION C
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!