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
fenix001 [56]
3 years ago
6

Solve the simultaneous equation 2x+4y=1 3x+5y=7b

Mathematics
1 answer:
Lyrx [107]3 years ago
8 0

Step-by-step explanation:

  • 3x+5y=7b equation 1
  • 2x+4y=1

2x=-4y+1

  • x=(-4y+1)/2
  • x=(-4y+1)/2 in equation 1

3×(-4y+1)/2+5y=7b

(-12y+3)/2+5y=7b

(-12y+3+10y)/2=7b

(-12y+3)/2=7b

-12y+3=14b

-12y=14b-3

  • y=3-14b/12
  • y=3-14b/12 in x=(-4y+1)/2

x=(-4×{3-14b/12}+1)/2

x=(-3+14b)/3+1/2

x=14b/3×1/2

  • x=7b/3
You might be interested in
Someone help me please
Masteriza [31]

Answer:

(5,1)

Step-by-step explanation:

Hi there!

Midpoint = \displaystyle (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2} ) where the two endpoints are (x_1,y_1) and (x_2,y_2)

Plug in the given information:

Midpoint = (5,3), Endpoint = (5,5)

(5,3)=\displaystyle (\frac{5+x_2}{2},\frac{5+y_2}{2} ) where  (x_2,y_2) is the other endpoint

Solve for x_2:

\displaystyle \frac{5+x_2}{2} =5\\\\5+x_2 =10\\x_2 =5

Solve for y_2:

\displaystyle\frac{5+y_2}{2}=3 \\\\{5+y_2}=6\\y_2=1

Therefore, the other endpoint (x_2,y_2) is (5,1).

I hope this helps!

4 0
3 years ago
Read 2 more answers
A jar contains 3 red marbles, 2 blue marbles, and 5 yellow marbles. What is the
Mariana [72]

Answer:

1/10

Step-by-step explanation:

7 0
3 years ago
The only time the word 'incorrectly' isn't spelled incorrectly is when it's spelled incorrectly. (⊙_ ⊙)
Korvikt [17]

ahaha good one

Step-by-step explanation:

...........

3 0
3 years ago
What is 105354.00085 x 17
Yanka [14]
ANSWER:

1791018.01445

EXPLANATION:

Use long multiplication to evaluate
4 0
3 years ago
The total sales of a company (in millions of dollars) t months from now are given by S(t) = 0.03t3 + 0.5t2 + 9t + 4. Find S'(t).
o-na [289]

Answer:

S'(t) = 0.09t^2 + t + 9

S(2) = 24.24

S'(2) = 11.36

S(11) = 203.43 means that the sales of the company 11 months from now is $203,430,000.

S'(11) = 30.89 means that, 11 months from now, the rate at which sales change is $30,890,000 per month

Step-by-step explanation:

The derivate of the sales function S'(t) , which is the rate at which sales vary with time in months, is:

\frac{dS(t)}{dt} =S'(t) = 0.09t^2 + t + 9

S(2) is found by applying t=2 to S(t):

S(2) = 0.03*(2^3) + 0.5*(2^2) + 9*2 + 4\\S(2)= 24.24

S'(2) is found by applying t=2 to S'(t):

S'(2) = 0.09*(2^2) + 2 + 9\\S'(2) = 11.36

Since the sales function gives the amount of sales in millions of dollars,

S(11) = 203.43 means that the sales of the company 11 months from now is $203,430,000.

S'(t) represents the rate of change in sales in millions of dollars per month.

S'(11) = 30.89 means that, 11 months from now, the rate at which sales change is $30,890,000 per month

8 0
3 years ago
Other questions:
  • Find the probability of at least 2 girls in 8 births. assume that male and female births are equally likely and that the births
    12·1 answer
  • What formula is used to determine which fraction is the larger one
    13·1 answer
  • What is 345,000 in expanded form
    10·1 answer
  • Write 0.57 as a fraction
    9·2 answers
  • Please help!!! Due today!!!
    7·1 answer
  • Find volume with full working out pls asap
    7·1 answer
  • The product of seven, y, and x
    11·1 answer
  • Amy shops at two stores for a new sweater. The sweater at the first store costs $10 less than four times the cost,c, of the swea
    11·1 answer
  • How do i reflect something on a grid?
    13·1 answer
  • Pls help pls I’ll mark you brain
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!