3 years ago

- 2X +3Y=7 5x+8y=-2 Solution=(_,_)

Mathematics

1 answer:

Leya [2.2K]3 years ago

3 0

Answer:

The solution is the point (-2,1)

Step-by-step explanation:

we have

$-2x+3y=7$ ----> equation A

$5x+8y=-2$ ----> equation B

Solve the system of equations by graphing

Remember that the solution of the system is the intersection point both lines

using a graphing tool

The solution is the point (-2,1)

see the attached figure

You might be interested in

Which function has the least value for the y-intercept?

diamong [38]

Answer:

y-intercept is the value of y when x is equal to zero. Because the y intercept is a point on a graph, you'll usually write it in point/ coordinate form.

Step-by-step explanation:

The y-intercept is where the parabola of a function crosses (or intercepts) the y axis.

6 0

3 years ago

Jose's school spent $1284 on 9 sticksof memory and a new hard drive. The hard drive cost $168. Which is the reasonable estimate

myrzilka [38]

Subtract the cost of the hard drive from the original $1284 and divide the answer you got by the 9 sticks of memory for your answer.

4 0

3 years ago

Read 2 more answers

One approximate solution to the equation cos x = -0.60 for the domain 0° ≤ x ≤ 360° is

hjlf

307 klkammamamamammama

5 0

1 year ago

8x - 3(5 + 9x what's the simplified algebraic expression p

Mashcka [7]

=8x + (-3) (5) + (-3) (9x)

=8x + -15 + -27x

(8x + -27x) + (-15)

19x +-15

19x -15

4 0

3 years ago

Sam earned $40 on his investment of $400. He earned 5% interest on his investment. How long did Sam leave his money in the bank?

gogolik [260]

Answer:

2yrs

Step-by-step explanation:

Given parameters:

Amount of interest earned = $40

Principal = $400

Interest rate = 5%

Unknown:

Time taken for the money to be in bank = ?

Solution:

The formula for interest is given as:

I = $\frac{PRT}{100}$

Where I is the interest

P is the principal

R is the rate

T is the time

So;

100I = PRT

T = $\frac{100I }{PR}$ = $\frac{100 x 40}{400 x 5}$ = 2yrs

8 0

3 years ago