3 years ago

If x - 2y + z = 5 and -x + 3y - z = 2, then y = ?

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

5 0

Answer:

y=10

Step-by-step explanation:

You might be interested in

A diagram of miles skateboard is shown below its dimensions. Smiles plants to paint the ramp excluding the bottom what is the ar

Alex_Xolod [135]

Answer:

Step-by-step explanation:

area of ramp = 24 x 36= 864

area of side (square)= 24 x 24 = 576

area of 2-side (triangle)= 2 x (0.5 x 24 x 41.8) = 1003.2

total area to be painted = 864 + 576 + 1003.2 = 2443.2

4 0

4 years ago

Rewrite the equation in Ax+By=C form. use intergers for A,B,C<br><br> y=1/5-1

schepotkina [342]

Answer:

$5y=-4$

<em>Sure hope this helps you :D</em>

6 0

2 years ago

Rounded to the nearest hundredth, what is the positive solution to the quadratic equation 0 = 2x2 + 3x – 8? Quadratic formula: x

OleMash [197]

ANSWER

$x=1.39$ to the nearest hundredth.

EXPLANATION

We have the equation,

$0=2x^2+3x-8$

Which can be rewritten as

$2x^2+3x-8=0$

The question demands the use of the quadratic formula.

Comparing this to the general quadratic equation;

$ax^2+bx+c=0$

$a=2,b=3,c=-8$

The quadratic formula is given by;

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

We now substitute all the values in to the formula;

$x=\frac{-3\pm\sqrt{(3)^2-4(2)(-8)}}{2(2)}$

We simplify to obtain;

$x=\frac{-3\pm\sqrt{9+64}}{4}$

$x=\frac{-3\pm\sqrt{73}}{4}$

We now split the plus or minus sign to obtain;

$x=\frac{-3-\sqrt{73}}{4}$

This implies that;

$x=-2.89$

$x=\frac{-3+\sqrt{73}}{4}$

This will evaluate to;

$x=1.39$

Hence, the positive solution rounded to the nearest hundredth is

$x \approx 1.39$

6 0

4 years ago

Read 3 more answers

What is (0.54)⋅(3.8)=

ra1l [238]

Answer:

2.052

Step-by-step explanation:

I hope it helped lot sj

8 0

3 years ago

Read 2 more answers

Please answer i really wanna pass (;´༎ຶٹ༎ຶ`)

motikmotik

The answer is 2/3 shirt per hour.

4 0

3 years ago

Read 2 more answers