Please please help me!!!!!!!

Mathematics

1 answer:

Mamont248 [21]3 years ago

5 0

One of these equations can be simplified to slope-intercept form: y = mx + b, where m is the slope and b is the y-intercept.

You have 2y = 14 - 2x and y = -x + 7. Divide 2y = 14 - 2x by 2 to get it in slope-intercept form.

(2y)/2 = (14 - 2x)/2
y = 7 - x
y = -x + 7

After dividing 2y = 14 - 2x by 2, we see that the two equations are the same; this means their graphs are the same. Since they share infinitely many points (being the same line), this system of equations has infinitely many solutions.

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If a girl lifts a load of 60N to a height of 3m, find work.

taurus [48]

Let the mass of the object exists at 60 N and the height exists at 3m then work

exists in 1764.

What is work?

The work done by a force exists determined to be the product of a component of the force in the direction of the displacement and the magnitude of this displacement.

Work can be estimated by multiplying Force and Distance in the direction of force as follows.

W = F × d. Unit.

Given data:

m = mass of the object = 60 N

h = height = 3 m

Work = Fh = mgh

g = gravity = 9.8 m/s²

work = Fh = mgh

$= 60*3*9.8$

= 1764

Therefore, the work exists in 1764.

To learn more about work refer to:

brainly.com/question/15908595

#SPJ9

5 0

1 year ago

The steamboat River Queen travels at the rate of 30km/h in still water. If it can travel 45 km up stream in the same amount of t

const2013 [10]

$x-the\ rate\ of\ the\ current\\t-time\\\\ \left\{\begin{array}{ccc}(30-x)t=45\\(30+x)t=63\end{array}\right\\ \left\{\begin{array}{ccc}t=\frac{45}{30-x}\\t=\frac{63}{30+x}\end{array}\right\\\\\frac{45}{30-x}=\frac{63}{30+x}\\\\cross\ multiply\\\\63(30-x)=45(30+x)\\1890-63x=1350+45x\\-63x-45x=1350-1890\\-108x=-540\ \ \ \ /:(-108)\\x=5\\\\Answer:The\ rate\ of\ the\ current\ is\ 5\ km/h.$

6 0

3 years ago

Help its math ik u like math

choli [55]

Answer:

141.625

Step-by-step explanation:

$\: \: 141.625\\ 32 \sqrt{4532} \\ - 32 \\ - - - - - \\ \: \: \: \: 133 \\ - 128 \\ - - - - - - \\ \: \: \: \: \: \: \: \: \: \: 52 \\ \: \: \: \: \: \: - 32 \\ - - - - - - \\ \: \: \: \: \: \: \: \: \: 200 \\ \: \: \: \: \: - 192 \\ - - - - - - \\ \: \: \: \: \: \: \: \: \: \: \: \: 80 \\ \: \: \: \: \: \: \: \: - 64 \\ - - - - - - \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: 160 \\ \: \: \: \: \: \: \: \: \: \: \: \: - 160 \\ - - - - - - - \\ \: \: \: \: \: \: \: \: \: \: \: 0$