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
lesya [120]
3 years ago
12

1.4(0.5x+4.2y)−3.5(0.2x−1.5y) simplify lots of points

Mathematics
1 answer:
Vilka [71]3 years ago
7 0

1,4(0,5x + 4,2y) - 3,5(0,2x - 1,5y)

1,4.0,5x + 1,4.4,2y - 3,5.0,2x + 3,5.1,5y

0,7x + 5,88y - 0,7x + 5,25y

0,7x - 0,7x + 5,88y + 5,25y

11,13y

You might be interested in
The vertex of this parabola is at (2,-1) when the y value is 0 and then x value is 5 what is the coefficient of the squared term
Darina [25.2K]

\bf ~~~~~~\textit{parabola vertex form} \\\\ \begin{array}{llll} \stackrel{\textit{we'll use this one}}{y=a(x- h)^2+ k}\\\\ x=a(y- k)^2+ h \end{array} \qquad\qquad vertex~~(\stackrel{2}{ h},\stackrel{-1}{ k}) \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \begin{cases} h=2\\ k=-1 \end{cases}\implies y=a(x-2)^2-1 \\\\\\ \textit{we also know that } \begin{cases} y=0\\ x=5 \end{cases}\implies 0=a(5-2)^2-1\implies 1=9a \\\\\\ \cfrac{1}{9}=a\qquad therefore\qquad \boxed{y=\cfrac{1}{9}(x-2)^2-1}


now, let's expand the squared term to get the standard form of the quadratic.


\bf y=\cfrac{1}{9}(x-2)^2-1\implies y=\cfrac{1}{9}(x^2-4x+4)-1 \\\\\\ y=\cfrac{1}{9}x^2-\cfrac{4}{9}x+\cfrac{4}{9}-1\implies \stackrel{its~coefficient}{y=\stackrel{\downarrow }{\cfrac{1}{9}}x^2-\cfrac{4}{9}x-\cfrac{5}{9}}

4 0
3 years ago
Read 2 more answers
Find the area of the figure below​
horrorfan [7]

Answer:

99cm^{2}

Step-by-step explanation:

12x4=48

12x3=36

12-4-5=3

3x5=15

48+36+15=99

5 0
2 years ago
There were some people on a train
Feliz [49]
I think the answer is 31
7 0
1 year ago
Read 2 more answers
The current population of a town is 8,000. If the population, P, increases by 25% each year, which equation could be used to fin
Bad White [126]

Answer:

given:

principal [P]=8000

rate[r]=15%

population after t years=?

we have

population after t years=P(1+r/100)^t=8000(1+15/100)^t is your answer

4 0
2 years ago
Combine like terms 9+18s - 7s
katovenus [111]

Answer: The answer is 9+11s :)

Step-by-step explanation:

Combine like terms

9+18s-7s

9=11s  so I don't what you mean but in case you want to find  s it will be

11  11

S=9/11

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is 42.735 to nearest one​
    7·1 answer
  • Factor completely x2 − 8x 16. (x 4)(x 4) (x − 4)(x − 4) (x 4)(x − 4) (x − 2)(x − 8)
    5·2 answers
  • Please help with this! thx
    5·1 answer
  • Dave drives to work each morning at about the same time. His commute time is normally distributed with a mean of 38 minutes and
    9·1 answer
  • What 17 multiply and adds to get -2
    14·2 answers
  • Which situation can be simulated by rolling a six-sided die once?
    7·2 answers
  • Solve each equation 3y - 4 = 6 - 2y
    14·1 answer
  • Question 2 of 10
    15·1 answer
  • What is 3/4 divided by 1/8? Consider drawing a model or using the common denominator method to help you solve the problem.
    7·1 answer
  • Devon made a mosaic in art class with different-shaped tiles. She started by putting 2 rows of t triangle tiles at the top of th
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!