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2 years ago

Determine whether (1,10) is a solution of (x +10)^2 – (y + 1)^2 = 0

Mathematics

1 answer:

Svetach [21]2 years ago

4 0

Answer:

yes

Step-by-step explanation:

if you plug in 1 for x you get 11, and 11^2 is 121, if you plug in 10 for y, you get 11, and 11^2 is 121, so 121-121=0

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hram777 [196]

Answer:

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Step-by-step explanation:

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Find the surface area of the pyramid round to the nearest tenth choose the correct unit

sineoko [7]

slant height(h) = 16.3ft

Base side = 20ft

$\text{Area of pyramid=}\frac{1}{2\text{ }}\times perimeterofbase\text{ x slant height}$

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2 months ago

Solve the Equation <br> 2x-3=14<br> -x+3y=-6

andriy [413]

Step-by-step explanation:

If you lost "y" in the first equation.

$\underline{+\left\{\begin{array}{ccc}2x-3y=14\\-x+3y=-6\end{array}\right}\qquad\text{add both sides of the equations}\\\\.\qquad x=8\\\\\text{Put the value of x to the first equation:}\\\\2(8)-3y=14\\16-3y=14\qquad\text{subtract 16 from both sides}\\-3y=-2\qquad\text{divide both sides by (-3)}\\y=\dfrac{2}{3}\\\boxed{x=8,\ y=\dfrac{2}{3}}$

If first equation is correct.

$2x-3=14\qquad\text{add 3 to both sides}\\2x=17\qquad\text{divide both sides by 2}\\x=8.5\\\\\text{Put the value of x to the second equation:}\\-8.5+3y=-6\qquad\text{add 8.5 to both sides}\\3y=2.5\qquad\text{divide both sides by 3}\\y=\dfrac{2.5}{3}\\y=\dfrac{25}{30}\\y=\dfrac{5}{6}\\\\\boxed{x=8.5,\ y=\dfrac{5}{6}}$

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2 years ago

Nabeel sand box is 7 feet wide , 5 feet long and 2 feet deep. What is the volume of the sand box

nika2105 [10]

Answer:

The volume of the sandbox is 70 cubic feet

Step-by-step explanation:

To find the volume, simply multiply all of the dimensions by each other.

7ft * 5ft * 2ft = 70 ft^3

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2 years ago