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just olya [345]
3 years ago
12

What is x*x-2x if x = -3

Mathematics
1 answer:
sveticcg [70]3 years ago
5 0

Put the value of x = -3 to the expression x · x - 2x:

<h3>(-3)(-3) - 2(-3) = 9 + 6 = 15</h3>
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T - 1/4 = -3/4<br><br> * Show work please. *
solmaris [256]

Add 1/4 to both sides to get T=-2/4

6 0
3 years ago
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5(x-3)=45 plsss hrlpp​
Nikolay [14]

Answer:

x=12

Step-by-step explanation:

5(x-3)=45

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3 0
3 years ago
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Leora wants to paint the nursery in her house. The nursery is an 8–by–10–foot rectangle, and the ceiling is 10 feet tall. There
tatuchka [14]

Answer:

The correct answer is - 242 ft^2

Step-by-step explanation:

Given:

one door : 3*6.5 => 19.5 ft^2

other door: 3*6.5 => 19.5 ft^2

a window: 2*3.5 => 7 ft^2

total =       46 ft^2

area of all four walls: 2h (l+b)

= 2(8) (10+8)

= 16 (18)

= 288 ft^2

paint required excluding doors and window:

=> area of your wall - (area of doors and window)

=> 288 - 46

= 242 ft^2

4 0
3 years ago
What are the coefficients in the expression 24x-3y+7z?
kirza4 [7]

So, the coefficients are 24, -3, and 7. The letters next to the coefficients are called "variables".

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3 years ago
Antonio invests $3,000, at 10% interest, compounded semiannually for 12 years. Use the compound interest formula to calculate th
Genrish500 [490]

\bf ~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$3000\\ r=rate\to 10\%\to \frac{10}{100}\dotfill &0.10\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{semi-annually, twice} \end{array}\dotfill &2\\ t=years\dotfill &12 \end{cases} \\\\\\ A=3000\left(1+\frac{0.10}{2}\right)^{2\cdot 12}\implies A=3000(1.05)^{24}\implies A\approx 9675.2998

4 0
4 years ago
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