3 years ago

State the domain of the relation ? ( there is more than one?) select all that apply

Mathematics

1 answer:

Roman55 [17]3 years ago

7 0

Answer:

I think it's {3, 6, 12, 18}

Step-by-step explanation:

Domain: all x-values that are to be used (independent values).

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20% of what original number is 25?

marshall27 [118]

Answer:

Y is 25, P% is 20, so the equation is 25/20% = X Convert the percentage to a decimal by dividing by 100. Converting 20% to a decimal: 20/100 = 0.20

Step-by-step explanation:

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2 years ago

The sum of two consecutive integers is – 7. Find the numbers

Y_Kistochka [10]

$n,n+1$ - two consecutive integers

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3 years ago

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Kobotan [32]

Answer:

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Step-by-step explanation:

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2 years ago

I’m confused on this answer anyone know it?

slamgirl [31]

Answer:

$y=\frac{26}{7},\:x=-\frac{15}{7}$

Step-by-step explanation:

$\begin{bmatrix}4x+5y=10\\ -2x+y=8\end{bmatrix}\\\\\begin{bmatrix}-2\cdot \frac{10-5y}{4}+y=8\end{bmatrix}\\\\$

$-5+\frac{7y}{2}=8\\\\\mathrm{Multiply\:both\:sides\:by\:}2\\-5\cdot \:2+\frac{7y}{2}\cdot \:2=8\cdot \:2\\-10+7y=16\\y=\frac{26}{7}\\$

$\mathrm{For\:}x=\frac{10-5y}{4}\\\mathrm{Subsititute\:}y=\frac{26}{7}\\x=\frac{10-5\cdot \frac{26}{7}}{4}\\\\$

$x=-\frac{15}{7}\\$

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3 years ago

There is a 10% sales tax on a purchase of $13.50 how much is the tax

raketka [301]

Answer:

1.35

Step-by-step explanation:

13.5/100 times 10 = 1.35

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3 years ago

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