All categories

2 years ago

2x+y=3 x=3+y This is an equation of substitution and I need help

Mathematics

2 answers:

Aliun [14]2 years ago

7 0

2(3+y)+y=3
6+3y=3
Y=-1
Substitute to solve for x
X=3-1
X=2

laiz [17]2 years ago

7 0

Solution:(1,1)
replace the x if the first equation with the second equation then solve. Then take that solution and put it in for the y and solve.

You might be interested in

Line segment RS is graphed with its end points at (1, 3) and (7, 11) If RS is dilated by a

Alchen [17]

For the answer to the question above, <span>what is the combined length of
the original line segment and its dilated image?
</span>RS = 10
image R'S' = 20
---> 10+20=30
I hope my answer helped you. Feel free to ask more questions. have a nice day!

7 0

2 years ago

In 1967, New Zealander Burt Munro set the world record for an Indian motorcycle, on the Bonneville Salt Flats in Utah, with a ma

bagirrra123 [75]

Answer:49 sec

Step-by-step explanation:

Given

Maximum speed to reach is 183.58 mi/h

Length of course is 5 mi

acceleration rate is defined by 60mi/h in 4 sec

therefore acceleration(a) $=\frac{v-u}{t}$

$a=\frac{60\times 60\times 60}{4}$

$a=54\times 10^3 mi/h^2$

To reach a speed of 183.58mi/h with an acceleration of $54\times 10^3 mi/h^2$

Using equation of motion

v=u+at

$183.58=0+(54\times 10^3)t$

$t=\frac{183.58}{54\times 10^3}$

t=0.00339 hours

t=12.23 s reach maximum speed

To complete course it takes

$s=ut+\frac{1}{2}at^2$

$5=0+\frac{1}{2}\times 54\times 10^3 \times t^2$

t=0.01360 hour

or $t=48.98\approx 49 s$

7 0

2 years ago

4. The Eisenhower Tunnel in Colorado was completed in 1973 and is the

Mrac [35]

Answer:

about 60 miles(97 km) west of denver Colorado..i think this is helpful.

7 0

2 years ago

Find the maximum value of Y = -3(x+7)(x+1)

Anna [14]

For my answer i got y = x - 18

5 0

2 years ago

Please help me i dont know what the answer is ??

Assoli18 [71]

To answer this, we need to use the rules of geometric shapes. An equilateral triangle is equiangular, meaning all its angle measures are equal. Since all triangles' angles add up to 180°, simply divide 180 by three to find the angle measure of each angle:
$\frac{180}{3} = 60$
Therefore, the measure of the triangle's angle is 60°

Next, we know that a characteristic of a rectangle is that each angle must be a right angle, or an angle with a measure of 90°.

Now, all we have to do is use the sum of all the angle measures to figure out the missing piece:
$90=x+60+12 \\ 90=x+72 \\ 90-72=(x+72)-72 \\ 18=x$

The missing angle measure, angle x, equals 18°.

Hope this helps!

7 0

2 years ago