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
ch4aika [34]
3 years ago
12

Please help me solve this for 15 points! -x2 + 4x - 54 = 0​

Mathematics
2 answers:
Mazyrski [523]3 years ago
7 0

Answer:

x1 =2-5i*sqrt(2)

x2 =2+5i*sqrt(2)

Step-by-step explanation:

-x^2 +4x-54=0 (quadratic equation)

a=-1, b=4, c=-54

x1=(-b+sqrt(b^2-4ac))/2a

x1=(-4+sqrt(4^2 - 4*(-1)(-54))/2*(-1)

x1=(-4+sqrt(16-216))/(-2)

x1 =(-4+sqrt(-200))/(-2)

x1 =(-4+sqrt(200i^2))/(-2) i^2=-1

x1 =(-4+sqrt(100*2*i^2))/(-2)

x1 =(-4+10i*sqrt(2))/(-2)

x1 =2-5i*sqrt(2)

x2 =(-b-sqrt(b^2-4ac))/2a

x2 =(-4-10i*sqrt(2))/(-2)

x2 =2+5i*sqrt(2)

Zepler [3.9K]3 years ago
3 0
As a result, 2x = 54 so x = 27. Hope this help:)
You might be interested in
Find the lateral and total for the cone below. leave the answer in terms of pie.
lutik1710 [3]

Answer:

<h2>35×24 = 840in²</h2>

Step-by-step explanation:

<h3>height=35 in.</h3><h3>base = 24<em><u>i</u></em><em><u>n</u></em><em><u>.</u></em><em><u> </u></em><em><u> </u></em></h3>

<em><u>then</u></em> <em>multiply</em>

8 0
2 years ago
Match the width with the given area and length of a rectangle.
torisob [31]

Answer:

5 cm A = 44cm; <u>w</u><u> </u><u>=</u><u> </u><u>8</u><u>.</u><u>8</u><u> </u><u>cm</u>

7.5 cm A = 48.75 cm2; <u>w</u><u> </u><u>=</u><u> </u><u>6.5</u><u> </u><u>cm</u>

5 cm A = 31.25; <u>w</u><u> </u><u>=</u><u> </u><u>6</u><u>.</u><u>2</u><u>5</u>

9.25 cm A = 55.5 cm; <u>w</u><u> </u><u>=</u><u> </u><u>6</u><u> </u><u>cm</u>

Step-by-step explanation:

What you have to do to find the answer is to take the length which for the first problem is 5 cm and then multiply the 5 by each width until you get the area. Example; Length <em>x</em> Width = Area

Basically you use the length times all of the widths until you match up the area.

Hope I could help

3 0
3 years ago
Which solid figure could be formed from the net shown?
Andru [333]
Square pyramid is the answer to your question
6 0
2 years ago
Read 2 more answers
Use the diagram to identify a segment parallel to CF<br><br> A. DG<br> B. AD<br> C. DC<br> D. AB
Eduardwww [97]
A. DG I'm pretty sure
8 0
3 years ago
Read 2 more answers
Makenzie is looking to purchase a used Jeep Wrangler that costs $21,000. She will make a $4,000 down payment and borrow the rema
olga_2 [115]

Answer:

$323

Step-by-step explanation:

The monthly payment can be calculated using the formula:

M=\frac{P(\frac{r}{12})(1+\frac{r}{12})^n}{(1+\frac{1}{12})^n-1}\\\\

where:

  • M=monthly payment
  • P=amount borrowed
  • r=annual interest rate
  • n=total number of monthly payments:

Our parameters are defined as:

n=60\\P=21000-4000=17000\\r=5.3%\\\\

We plug our parameters in the equation to solve for M;

M=M=\frac{P(\frac{0.053}{12})(1+\frac{0.053}{12})^n}{(1+\frac{0.053}{12})^{60}-1}\\\\\\\\

=\frac{P(\frac{0.053}{12})(1+\frac{0.053}{12})^{60}}{(1+\frac{0.053}{12})^{60}-1}\\\\\\=323.15

=323.15\approx\$323

Hence, the monthly payment is $323

8 0
3 years ago
Other questions:
  • Factor  56−16 56−16  using the GCF. I TRIED IT AND ITS NOT 8
    9·2 answers
  • 1/2 + 1/3= whats the answer
    12·2 answers
  • the average mass of the eggs laid by chickens on ms. watsons farm is 3.5 grams. about how many grams does a dozen eggs weigh
    12·2 answers
  • The first step in the process for facturing the trinonmial x2-5x-36 is to
    5·1 answer
  • A 20 foot ladder is leaning against the side of a building. The bottom of the ladder is 4 feet from the wall. How many feet abov
    8·1 answer
  • Write the following expression in standard notation.
    8·2 answers
  • Please Help Will Mark Brainliest
    5·2 answers
  • G(x) = x2 + 3x – 2 Find g(3)
    15·2 answers
  • A soccer player is 30 feet from the goal line. He shoots the ball directly at the goal.
    15·1 answer
  • Kkkmnkf;d;klsnfksdjlkfjk;asjdk;fjkasjd;f. fdjnsa;fdadf
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!