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
IrinaK [193]
3 years ago
13

Please help me!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
romanna [79]3 years ago
5 0

Answer:

a. 81.9

b. 144.7

c. 110.2

d. 48

Step-by-step explanation:

a. 120/109.2 = 90/x

x = 81.9

b. 45.6/120 = 55/x

x = 144.7

c. 304.8/96 = 350/x

x = 110.2

d. 109.2/45.6 = 115/x

x = 48

You might be interested in
Michelle buys a rug for $36 and sells it for $90. What was the value of her markup, expressed as a percent?
Rama09 [41]
Her markup was about 60%.
4 0
3 years ago
Read 2 more answers
The square and the triangle have equal perimeters.
Tamiku [17]
I think not because a square has four sides and a triangle has three.
8 0
3 years ago
Find the arc length of the partial circle.
ElenaW [278]

Answer:

38.485(correct to 5 significant figure)/ 12.25π

Step-by-step explanation:

\pi(7 {}^{2} )( \frac{90degree}{360deree} )

= \pi(49)( \frac{1}{4} )

=38.485(cor. to 5 sig.fig.)/ 12.25π

to find arc length of sector,we need to π(radius²)(sector's degree divided by 360 degree)

8 0
3 years ago
Factor the expression.
tiny-mole [99]
B. (k+10f)(k-5f) you can tell in 2 ways.  1. if the second sign is neg then the signs in the factors are going to be one neg and one positive so that knocks out C and D.  Then you look at the second term and since the 5 is positive then the 10 has to be positive so you end up with a positive 5kf.

The second way is to FOIL them out.  When you check B you get k^{2} -5kf+10kf- 50f^{2} combine your like terms and you have your original expression of k^{2} +5kf-50 f^{2}

Hope that helps
3 0
3 years ago
Use the x-intercept method to find all real solutions of the equation.<br> x^3-8x^2+9x+18=0
meriva

Answer:

a. x=-1,3,\:or\:6

Step-by-step explanation:

The given equation is;

x^3-8x^2+9x+18=0

To solve by the x-intercept method we need to graph the corresponding function using a graphing calculator or software.

The corresponding function is

f(x)=x^3-8x^2+9x+18

The solution to x^3-8x^2+9x+18=0 is where the graph touches the x-axis.

We can see from the graph  that; the x-intercepts are;

(-1,0),(3,0) and (6,0).

Therefore the real solutions are:

x=-1,3,\:or\:6

8 0
3 years ago
Read 2 more answers
Other questions:
  • 17. Write a quadratic equation to find two consecutive odd natural numbers whose
    8·1 answer
  • Can you also tell me if the others are right? please? ​
    12·2 answers
  • Help plz
    14·2 answers
  • A bike rental company charges $10 to rent a bike plus $2 for each hour the bike rented
    13·1 answer
  • What are the solutions of the equation 0=x^2-x-6
    13·1 answer
  • What is two hundred seven,thousands,fourth -eight is in standerd form?
    7·1 answer
  • Identify the domain of a radical function with an odd index.
    11·1 answer
  • How many solutions does the system have?<br> 3x + y = 8<br> 2x + 2y = 8
    5·1 answer
  • I need help
    7·1 answer
  • Who Is The Father Of Math?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!