4x-y=-1 what is the answer

(-14+3/2b) - (1+8/2b) = -5 -5/2b(-10+b) + (7b-5) = 8b-15(7/2b-3) - (8+6b) = -5/2b-11(5+2b) + (2b+3/2) = 4b+ 13/2

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

X= -9/10

y= -2 3/5

Step-by-step explanation:

Multiply equation one by 4 and equation two by 3 to eliminate X

it becomes

-12x + 8y =-12

12x - 3y = -1

add equation one and two,

you'll be left with 5y= -13

divide both sides by 5

y = -13/5 improper fraction

= -2 3/5

Now substitut y = -2 3/5 into any of the original equations to get x.

using equation two, we have

4x -(-2 3/5) = -1

4x + 2 3/5 = -1

4x = -1 - 2 3/5

the LCM of 5 is 5 , so

4x = -5-13/5

4x = -18/5

crossmultiply

4x x 5 = -18

20x = -18

divide both sides by 20

we have x = -18/20, when you cancel further , you have x = -9/10

X= -9/10

y= -2 3/5

Step-by-step explanation:

Multiply equation one by 4 and equation two by 3 to eliminate X

it becomes

-12x + 8y =-12

12x - 3y = -1

add equation one and two,

you'll be left with 5y= -13

divide both sides by 5

y = -13/5 improper fraction

= -2 3/5

Now substitut y = -2 3/5 into any of the original equations to get x.

using equation two, we have

4x -(-2 3/5) = -1

4x + 2 3/5 = -1

4x = -1 - 2 3/5

the LCM of 5 is 5 , so

4x = -5-13/5

4x = -18/5

crossmultiply

4x x 5 = -18

20x = -18

divide both sides by 20

we have x = -18/20, when you cancel further , you have x = -9/10

sina-sinbcosb+cosatana-tanbcos0+cos x pi/320tanstep-by-step explanation:...Read More

3 more answers

A negative cannot be a root, 8= 2.4...Read More

3 more answers

start with a line segment pq that we will copy. mark a point r that will be one endpoint of the new line segment. set the compasses' point on the point p of the line segment to be...Read More

1 more answers

x= -3step-by-step explanation: step 1: simplify brackets4 - x - 1 = 6step 2: simpilfy 3 - x = 6step 3: subtract 3 from both sides-x = 6 - 3step 4: simpilfy 6 - 3-x = 3step 5:...Read More

1 more answers

the most boring thing ever writtenstep-by-step explanation: i am writing something. yes, i plan to make it the most boring thing ever written. i go to the store. a car is parked. m...Read More

2 more answers

42/5 = Exact Form8.4 = Decimal Form8 2/5 = Mixed Number FormStep-by-step explanation:If the perimeter is 24 feet and it is a rectangle then you divide 24 by 4Each side is 6 feetLen...Read More

2 more answers

- Mrs. Johnson earned $31,500.00 in salary this year. Her salary will in...
- 2. A line passes through the points (5, 4) and (-5,0). (a) Write an e...
- Which function represents g?...
- Which of the following would be a line of reflection that would map AB...
- De una baraja de 48 cartas se extrae simultáneamente dos de ellas. Ca...
- A computer manufacturer built a new facility for assembling computers....
- Consider the sequence defined by an an = 6n + (−1)n3 − 3 12 for every...
- Please everyone mark me as brainlest...
- Triangle J′K′L′ shown on the grid below is a dilation of triangle JKL...
- Suppose you draw two cards from a standard 52-card deck. Find the prob...