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
GenaCL600 [577]
3 years ago
10

0.5x + 4 + 0.9x = x + 5

Mathematics
2 answers:
Law Incorporation [45]3 years ago
6 0

Answer:

x=2.5

Step-by-step explanation:

kozerog [31]3 years ago
5 0

Answer:

0.5x + 4 + 0.9x = x + 5

collect like terms together:

0.5x + 0.9x - x = 5 - 4 \\ x(0.5 + 0.9 - 1) = 1 \\ 0.4x = 1 \\ x =  \frac{1}{0.4}  \\  \\ { \boxed{ \boxed{x = 2.5}}}

You might be interested in
David and Amanda are trying to figure out how long they can live off their $12,350 savings if they spend $240 each month. They h
Romashka [77]
David's : y = 12,350 - (240x)
Amanda's : y = 12,350 + (240x)

David's equation is correct, because their spending will be multiplied by the number of months and then subtracted from their savings


7 0
3 years ago
Read 2 more answers
Devin’s friend Ryan lives 2 blocks west and 5 blocks south of Devin. Devin’s friend Andy lives 7 blocks east and 2 block north o
My name is Ann [436]

Answer:

≈11.4

Step-by-step explanation:

We know that, Ryan lives 2 blocks west and 5 blocks south of Devin

=> Coordinate of Ryan: (-2,-5). Because:

  • 2 blocks west = 2 unit to the left = -2
  • 5 blocks south = 5 unit go down= -5

Andy lives 7 blocks east and 2 block north of Devin.

=>Coordinate of Andy: (7,2), because:

  • 7 blocks east = 7 unit ti the right = 7
  • 2 block north = 2 unit go up = 2

Hence, to find out the distance of Ryan and Andy, we use distance formula as below:

\sqrt{(2+5)^{2} + ((7+2)^{2} }  ≈11.4

3 0
3 years ago
Read 2 more answers
Verify that -5, 1/2, and 3/4 are the zeroes of the cubic polynomial 4x^3+20x^2+2x-3. Also verify the relationship between the ze
Finger [1]

Solution:

we have been asked to verify that -5, 1/2, and 3/4 are the zeroes of the cubic polynomial 4x^3+20x^2+2x-3

To verify that whether the given values are zeros or not we will substitute the values in the given Polynomial, if it will returns zero, it mean that value is Zero of the polynomial. But if it return any thing other than zeros it mean that value is not the zero of the polynomial.

Let f(x)=4x^3+20x^2+2x-3\\\\\text{when x=-5}\\\\f(-5)=4(-5)^3+20(-5)^2+2(-5)-3=-13\\\\\text{when x=}\frac{1}{2}\\

f( \frac{1}{2} ) = 4 ( \frac{1}{2} )^3+20(\frac{1}{2})^2+2(\frac{1}{2})-3=\frac{7}{2}\\\\

\text{when x=}\frac{3}{4}\\\\

f( \frac{3}{4} ) = 4 ( \frac{3}{4} )^3+20(\frac{3}{4})^2+2(\frac{3}{4})-3=\frac{183}{16}\\

Hence -5, 1/2, and 3/4 are not the zeroes of the given Polynomial.

Since sum of roots=\frac{-b}{a}= \frac{-20}{4}=-5\\

But -5+\frac{1}{2}+\frac{3}{4}=  \frac{-15}{4}\neq-5

Hence we do not find any relation between the coefficients and zeros.

Anyway if the given values doesn't represents the zeros then those given values will not have any relation with the coefficients of the p[polynomial.

6 0
3 years ago
Whut is 2 pus 2 i dount no
Rom4ik [11]
The answer to this is 4
7 0
3 years ago
The Johnson family is trying to conserve energy by having lights on in the house no more than 105 minutes a day. If they have al
bagirrra123 [75]

Answer:

C

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • mike& sue danced 3/4 of an hour with out stopping. this is 3/8 hour more than betty& ryan danced. how long more did bett
    10·1 answer
  • 5 less than the product of a number n and 3
    11·2 answers
  • URGENT. WILL GIVE BRAINLIEST.
    12·1 answer
  • A travel company is investigating whether the average cost of a hotel stay in a certain city has increased over the past year. T
    7·1 answer
  • 2,000 into scientific notation
    7·2 answers
  • Kiran's father is 65 years old. He is 8 years older than three
    11·2 answers
  • BRAINLIEST FOR BEST ANSWER NO FOOLING AROUND Find each difference. If you get stuck, consider drawing a number line diagram.
    12·2 answers
  • A garden table and a bench cost $ 1045 combined. The garden table costs $95 more than the bench. What is the cost of the bench?
    6·1 answer
  • Tony operates a skate rental company. He charges an equipment fee of $3 plus $6 per hour. Which equation represents this linear
    5·1 answer
  • Find the slope using the following points: (20,-10)(6,-20)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!