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
DIA [1.3K]
3 years ago
11

I need help with this problem

Mathematics
2 answers:
Setler79 [48]3 years ago
8 0
One angle is 40 degrees and the other is 50 degrees.

A complementary angle is 90 degrees.

As the ratio is 4:5 we can use the equation: 4x+5x=90

Solving it we get:
9x=90
x=10.

So the ratio is 4(10):5(10)

Meaning the two angles are 40 degrees and 50 degrees.

I hope this helps!
(And if you can, could I have brainliest please?)
Sergio039 [100]3 years ago
6 0
The answer is 57765363535366355336
You might be interested in
High school math. Please answer everything in picture. Thank you................................................................
vaieri [72.5K]

Answer:

3) Cubic polynomial with four terms.

4) Linear polynomial with two terms.

5) The zeros are: (1-sqrt(5))/2=-0.618, 1, and (1+sqrt(5))/2=1.618

The y-intercept is y=1

Please, see the attached graph.

6) The zeros are: -1.272, 1.272

The y-intercept is y=1

Please, see the attached graph.

7) Please, see the attached files.

8) Please, see the attached files.

9) Please, see the attached files.

10) Please, see the attached files.


Step-by-step explanation:

3) Degree is the maximun exponent that the variable "x" has, in this case 3, then this is a cubic polynomial, and it has four terms (6x^3, -7x^2, -10x, and -8).


4) Degree is the maximun exponent that the variable "x" has, in this case 1 (x=x^1), then this is a linear polynomial, and it has two terms (-10x, and 10).


5) f(x)=x^3-2x^2+1

Zeros:

f(x)=0→x^3-2x^2+1=0

Factoring:

    x^3-2x^2+0x+1  

 ! 1      -2       0    1

<u>1 !____1____-1_-1</u>

   1      -1        -1   0

   1x^2-1x      -1 = x^2-x-1

x^3-2x^2+1=0→(x-1)(x^2-x-1)=0

The zeros are:

x-1=0→x-1+1=0+1→x1=1

x^2-x-1=0

ax^2+bx+c=0; a=1, b=-1, c=-1

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

x=(-(-1)+-sqrt((-1)^2-4(1)(-1))/(2(1))

x=(1+-sqrt(1+4))/2

x2=(1+-sqrt(5))/2=(1+2.236067978)/2=3.236067978/2=1.618033989=1.618

x=(1-sqrt(5))/2=(1-2.236067978)/2=-1.236067978/2=-0.618033989=-0.618

x3=(1+sqrt(5))/2

The zeros are: (1-sqrt(5))/2=-0.618, 1, and (1+sqrt(5))/2=1.618  

The y-intercept is:

x=0→f(0)=(0)^3-2(0)^2+1→f(0)=0-2(0)+1→f(0)=0-0+1→f(0)=1

The y-intercept is y=1.


6) f(x)=-x^4+x^2+1

Zeros:

f(x)=0→-x^4+x^2+1=0

Factoring: Multiplyng both sides of the equation by -1:

(-1)(-x^4+x^2+1)=(-1)(0)

x^4-x^2-1=0

(x^2)^2-(x^2)-1=0

Changing x^2 by t:

t^2-t-1=0

at^2+bt+c=0; a=1, b=-1, c=-1

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

t=(-(-1)+-sqrt((-1)^2-4(1)(-1))/(2(1))

t=(1+-sqrt(1+4))/2

t1=(1+-sqrt(5))/2=(1+2.236067978)/2=3.236067978/2=1.618033989=1.618

t2=(1-sqrt(5))/2=(1-2.236067978)/2=-1.236067978/2=-0.618033989=-0.618

t^2-t+1=0→(t-1.618)(t-(-0.618))=0→(t-1.618)(t+0.618)=0

and t=x^2, then:

(x^2-1.618)(x^2+0.618)=0

Factoring the first parentheses using a^2-b^2=(a+b)(a-b), with:

a^2=x^2→sqrt(a^2)=sqrt(x^2)→a=x

b^2=1.618→sqrt(b^2)=sqrt(1.618)→b=1.272

(x^2-1.618)(x^2+0.618)=0→(x+1.272)(x-1.272)(x^2+0.618)=0

The zeros are:

x+1.272=0→x+1.272-1.272=0-1.272→x1=-1.272

x-1.272=0→x-1.272+1.272=0+1.272→x2=1.272

The zeros are: -1.272, and 1.272  

The y-intercept is:

x=0→f(0)=-(0)^4+(0)^2+1→f(0)=-0+0+1→f(0)=1

The y-intercept is y=1.

3 0
3 years ago
Please help I been waiting for hours and I need to find out how to simplify complex fractions.
schepotkina [342]

Answer:

Method 1:

Find the Least Common Denominator (LCD) of all the denominators in the complex fractions.

Multiply this LCD to the numerator and denominator of the complex fraction.

Simplify, if necessary.

Method 2:

Create a single fraction in the numerator and denominator.

Apply the division rule of fractions by multiplying the numerator by the reciprocal or inverse of the denominator.

Simplify, if necessary.

6 0
3 years ago
Ian’s favorite part of the pizza is the crust. Which size pizza should they order to get 37.68 inches of crust?
Airida [17]

Answer:

extra-large

Step-by-step explanation:

6 0
3 years ago
HELP!
lora16 [44]
A because I solved the problem
6 0
3 years ago
Read 2 more answers
Jada planned a 30-mile bike ride. So far, she has traveled 18 miles. What percent of her total trip has she traveled?
Tju [1.3M]

Answer:

60%

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Belleville High School offers classes on three different foreign languages. Let A be the event that a student is in eleventh gra
    6·2 answers
  • 2ax-15=2(x+5)+5(x-1)
    10·1 answer
  • Find the value of x so that the function has the given value.<br><br> j(x)=−4/5x+7; j(x)=−5
    13·1 answer
  • 1. Complete the proof by filling in the missing reasons for six steps.
    6·1 answer
  • the total cost (c) in dollars of renting a car for n days is given by the inequality c &gt;125 +50n. what is the maximum number
    12·1 answer
  • Help please i need to pass
    14·1 answer
  • This is 50 points plz help ( no links ) EXPLAIN YOU ANSWER plz
    10·1 answer
  • Can someone plsss help me
    9·1 answer
  • A'B'C' is the image of AABC under a rotation about the origin, ( 0,0).
    6·1 answer
  • Can someone help me with this problem? Thank you!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!