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
BaLLatris [955]
2 years ago
10

If 5x + 4y= 13 and 4x + 5y = 14, find the value of (x - y).​

Mathematics
2 answers:
soldi70 [24.7K]2 years ago
8 0

Answer:

x - y = - 1

Step-by-step explanation:

Given the 2 equations

5x + 4y = 13 → (1)

4x + 5y = 14 → (2)

Subtract (2) from (1) term by term , that is

(5x - 4x) + (4y - 5y) = 13 - 14

x - y = - 1

yarga [219]2 years ago
6 0

Answer:

x = 1

y = 2

x - y = -1

Step-by-step explanation:

5x + 4y= 13,   then 4y = 13 - 5x, then y = (13 - 5x)/4

4x + 5y = 14

substitute for y:

4x + 5(13 - 5x)/4 = 14

simplifying:

4x + (65 - 25x)/4 = 14

4x + 16.25 -6.25x = 14

-2.25x = -2.25

x = 1

y = (13 - 5)/4 = 2

You might be interested in
A circle with a shaded sector has a circumference of 12 pi millimeters. What is the area of the shaded sector? Express the answe
valentinak56 [21]

Answer:

The answer is C. 8 mm

Step-by-step explanation:

For me, i was able to divide the 80 by 12 and get 6.667 thus i was able to round up and conclude the answer in the answer choices

7 0
3 years ago
Read 2 more answers
A pair of vertical angles have measures (2z+43)° and (−10z+25)° .<br><br> What is the value of z?
Alexxx [7]
2.25 but i am not sure i hope that helps
4 0
3 years ago
At noon a train leaves Washington, D.C., headed for Charleston, South Carolina, a distance of 500 mi. The train travels at a spe
Bogdan [553]

Answer:

6 hours

Step-by-step explanation:

Answer:

6 hours

Step-by-step explanation:

Firstly, it is important to know where the train that leaves Washington will get after one hour since they didn't start at the same time between noon and 1 is 1 hour.

Speed = distance / time

Distance = speed * time

The distance S = 44 * 1

S= 44m

To determine the time they will pass each other

500(total distance)- 44 ( distance gotten to in 1 hour) - d(the distance it willl pass each other =44* t(time the train will pass each other.

456-d =44t

Second train

d = 32t

Substituting to the equation

456-32t=44t

456=76t

t= 6 hours.

The time they will pass each other is six hours.

4 0
3 years ago
Helppppppp asappppp
vaieri [72.5K]

Answer:

Your answer is 87.487699

4 0
3 years ago
F(x)=2x^3+2x-3 g(x)=-.5[x-4] what is the y value when f(x) = g(x)?
Charra [1.4K]

Answer:

D. x = 0.5

Step-by-step explanation:

A graphing calculator is the quickest way to get to an answer here.

 f(x) = g(x) for x = 0.5

__

We can find the y-intercepts of the two functions to be ...

 f(0) = -3

 g(0) = -2

We know the x-intercept of g(x) is x=4. The x-intercept of f(x) will be a value less than 1, because f(1) = 1. (The function crosses the x-axis between x=0 where f(x) < 0 and x=1, where f(x) > 0.)

Considering these intercept points, we know the value of x for f(x)=g(x) will be between x=0 and x=1. There is only one answer choice in that interval:

 x = 0.5

5 0
3 years ago
Other questions:
  • 30 In AXYZ shown below, medians XE, YF, and ZD intersect at C.
    5·1 answer
  • I need help guys I don't get it .. thank you
    6·1 answer
  • Simplify the expression below. ​
    15·1 answer
  • michael has 40 coins worth 8.20. consisting of 10 cents and 25 cents . how many of each coins does he have ?
    11·1 answer
  • Solve 5kx + 6 = 7kx for x.
    8·1 answer
  • Wendy needs to purchase 36 vases witch cost $3 each
    12·2 answers
  • What is 7 1/3 * 5 1/2 equal
    13·1 answer
  • Plssss help will mark brainliest
    9·2 answers
  • Can someone please tell me the answer on this.
    13·1 answer
  • A woman bought some large frames for $19 each and some small frames for $9 each at a closeout sale. If she bought 18 frames for
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!