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3 years ago

Doubling the quantity of a number decreased by six is less than negative thirty-six

Mathematics

1 answer:

klemol [59]3 years ago

4 0

Here's the formula: 2a-6 < -36

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Solution to this system of linear equation -6x=48-6y -4x=50-6y

MrRa [10]

Answer:

$\large\boxed{x=1,\ y=6\to(1,\ 6)}$

Step-by-step explanation:

$\left\{\begin{array}{ccc}-6x=48-6y&\text{change the signs}\\-4x=50-6y\end{array}\right\\\underline{+\left\{\begin{array}{ccc}6x=-48+6y\\-4x=50-6y\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad2x=2\qquad\text{divide both sides by 2}\\.\qquad x=1\\\\\text{Put it ot the first equation:}\\-6(1)=48-6y\\-6=48-6y\qquad\text{subtract 48 from both sides}\\-54=-6y\qquad\text{divide both sides by (-6)}\\9=y\to y=6$

7 0

3 years ago

The retail cost of a tv is 45% more than its wholesale cost. Therefore the the retail cost is how many times the wholesale cost

vichka [17]

Let the retail cost be x and the wholesale cost be y. From the first statement, we can formulate the equation written below:

x = y + 0.45y
x = 1.45y
Therefore, the retail cost is 1.45 times greater than the wholesale cost.

5 0

3 years ago

Read 2 more answers

Choose the equation of the vertical line passing through the point (-2,3)

andreev551 [17]

Vertical line is x=something
we see
(x,y)
(-2,3)
x=-2 is the equation

3 0

3 years ago

Dan invests £18790 into his bank account. He receives 4.9% per year simple interest. How much will Dan have after 3 years? Give

garri49 [273]

Answer:

£21552.

Step-by-step explanation:

Given information:

Principal amount = £18790

Rate of simple interest =4.9% = 0.049 per year

Time = 3 years

Formula for simple interest:

$I=P\times r\times t$

where, P is principal, r is rate of interest and t is time in years.

$I=18790\times 0.049\times 3$

$I=2762.13$

Total amount after 3 year is

$A=P+I$

$A=18790+2762.13$

$A=21552.13$

$A\approx 21552$

Therefore, Dan have £21552 after 3 years.

8 0

3 years ago

Two lines intersect in more than one point always sometimes never

GuDViN [60]

The answer is never, that is, on a 2 dimensional plane. You can perform an experiment to see why it is the case. On curved surfaces though, two lines can intersect one another more than once. For instance, on the surface of planet Earth, two lines can intersect one another, both at the Earth's North Pole and South Pole.

5 0

3 years ago