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lions [1.4K]
3 years ago
8

What is the answer for -9+x=-26

Mathematics
2 answers:
SVEN [57.7K]3 years ago
8 0
X=-17 is the answer
Natalka [10]3 years ago
4 0

Answer:

x =-17

Step-by-step explanation:

-9+x=-26\\\\\mathrm{Add\:}9\mathrm{\:to\:both\:sides}\\-9+x+9=-26+9\\\\Simplify\\x=-17

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MissTica

Answer:

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7 0
3 years ago
What is (6.89+14.52)+(-14.52)???
MrRa [10]
The answer is 6.89 because
6.89+14.52=21.41
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7 0
4 years ago
Consider the function f given by f(x)=x*(e^(-x^2)) for all real numbers x.
NISA [10]

Answer:

\frac{\sqrt{\pi}}{4}

Step-by-step explanation:

You are going to integrate the following function:

g(x)=x*f(x)=x*xe^{-x^2}=x^2e^{-x^2}  (1)

furthermore, you know that:

\int_0^{\infty}e^{-x^2}=\frac{\sqrt{\pi}}{2}

lets call to this integral, the integral Io.

for a general form of I you have In:

I_n=\int_0^{\infty}x^ne^{-ax^2}dx

furthermore you use the fact that:

I_n=-\frac{\partial I_{n-2}}{\partial a}

by using this last expression in an iterative way you obtain the following:

\int_0^{\infty}x^{2s}e^{-ax^2}dx=\frac{(2s-1)!!}{2^{s+1}a^s}\sqrt{\frac{\pi}{a}} (2)

with n=2s a even number

for s=1 you have n=2, that is, the function g(x). By using the equation (2) (with a = 1) you finally obtain:

\int_0^{\infty}x^2e^{-x^2}dx=\frac{(2(1)-1)!}{2^{1+1}(1^1)}\sqrt{\pi}=\frac{\sqrt{\pi}}{4}

5 0
3 years ago
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Rasek [7]

Answer:

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3 years ago
Air is a solution composed of 78% nitrogen and 21% oxygen. Identify the solute and the solvent. *
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Answer:

nitrogen is the solvent and oxygen is the solute

Step-by-step explanation:

Most of the time the solute will be present in a smaller quantity and the solvent will appear in a larger quantity.

3 0
3 years ago
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