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3 years ago

Twice the sum of two numbers is 36 If one of the numbers is 10 find the other number

Mathematics

2 answers:

Nookie1986 [14]3 years ago

6 0

Answer:

So we know the sum of two numbers, let them be x and y, is equal to 36:

x + y = 36

And on of them, for example, y, is equal to 10:

x + 10 = 36

Now, the only thing we need to do is solving the equation to find x:

x + 10 = 36

We pass the 10 substracting to the right:

x = 36 - 10

And now, we substract:

x = 26

Now we know one number is 10 and the other is 26, so we can verify we have done all correctly

26 + 10 = 36 (TRUE)

Now we know we have done the exercise well.

Dahasolnce [82]3 years ago

3 0

Answer:

Step-by-step explanation:

10 + 8 = 18

18 x 2 = 36

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8m^2+ 40m ------------------- 8m

dsp73

Answer:

$(m+5)$

Step-by-step explanation:

Take out 8m as a factor from the top side of the equation. You are left with $\frac{8m(m+5)}{8m} = m+5$

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Answer:

(-2, 0)

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3 years ago

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Evaluate the given integral by changing to polar coordinates. sin(x2 + y2) dA R , where R is the region in the first quadrant be

Leona [35]

In polar coordinates, the region $R$ is the set of points

$\left\{(r,\theta)\mid3\le r\le5,\,0\le\theta\le\dfrac\pi2\right\}$

and we have $x^2+y^2=r^2$ and $\mathrm dA=r\,\mathrm dr\,\mathrm d\theta$ . So the integral, converted to polar, is

$\displaystyle\iint_R\sin(x^2+y^2)\,\mathrm dA=\int_0^{\pi/2}\int_3^5r\sin r^2\,\mathrm dr\,\mathrm d\theta=\frac\pi2\int_3^5r\sin r^2\,\mathrm dr$

Substitute $s=r^2$ to get

$=\displaystyle\frac\pi4\int_9^{25}\sin s\,\mathrm ds=\frac{(\cos9-\cos25)\pi}4$

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3 years ago

Determine the answer to -3 + (-5) and explain the steps using a number line

DanielleElmas [232]

-10 -9 -8 -6 -5 -4 -3 -2 -1 0 1 2 3 4

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Hope this helps! :)

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3 years ago

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If the area of Bianca’s rectangular backyard patio is represented by the expression x2 – 18x + 81, and the length of the patio i

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1) $width=x-9$

2) Rectangular shape is square shape patio !

Step-by-step explanation:

Here we have , the area of Bianca’s rectangular backyard patio is represented by the expression x2 – 18x + 81, and the length of the patio is represented by the expression x − 9: We need to find

1. what is the expression for the width of the patio? Explain and show all work.

We know that area of rectangle = $Length(width)$

⇒ $x^2-18x+81=(x-9)(width)$

Factorizing RHS:

⇒ $x^2-9x-9x+81=(x-9)(width)$

⇒ $x(x-9)-9(x-9)=(x-9)(width)$

⇒ $(x-9)(x-9)=(x-9)(width)$

⇒ $width=x-9$

2. what special rectangular shape is the patio?

Now , we see that

$Length = x-9\\Width=x-9$

A rectangle whose length & width are equal is known as a square ! Hence , Rectangular shape is square shape patio !

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3 years ago

Twice the sum of two numbers is 36 If one of the numbers is 10 find the other number​

Twice the sum of two numbers is 36 If one of the numbers is 10 find the other number