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podryga [215]
3 years ago
7

An appliance store decreases the price of a​ 19-in. television set

Mathematics
1 answer:
ioda3 years ago
7 0

Answer:$637.00

Step-by-step explanation:

77%=490.49

100%=?

100×490.49÷77=637

Original price =$637.00

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a plane flying with the wind travels 630 mi in 1.5hrs. Flying against the wind , the plane travels 1120 mi in 4hrs. Find the rat
Flauer [41]
\bf \begin{cases}
r=\textit{rate of the plane}\\
w=\textit{rate of the wind}\\
\end{cases}
\\\\

\begin{array}{ccccllll}
&distance&rate&time(hrs)\\
&\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\\
\textit{with wind}&630&r+w&1\frac{1}{2}\\
\textit{against wind}&1120&r-w&4
\end{array}


\bf thus  \begin{cases}
630=(r+w)1\frac{1}{2}\to 630=(r+w)\frac{3}{2}
\\\\
1120=(r-w)4\\
--------------\\
630=(r+w)\frac{3}{2}\implies 630\cdot \frac{2}{3}=r+w\\
420=r+w\implies \boxed{420-w}=r\\
--------------\\
thus\\
--------------\\
1120=(r-w)4\implies 1120=4r-4w
\\\\
1120=4(\boxed{420-w})-4w
\end{cases}


solve for "w", to find the wind's speed rate,

so hmmm what's the plane's rate?  well 420 - w = r  :)
5 0
3 years ago
I’m terrible at math
frosja888 [35]

Answer:

The Chromatophores are located in the dermis of the skin, above or below the scales. They impart true colour (rather than structural colour) and contain black, red, yellow, blue, white (and rarely green) pigment granules called chromatosomes. Only one colour is found in each chromatophore.

Step-by-step explanation:

5 0
2 years ago
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You roll a number cube and flip a coin. What is the probability of rolling a number less than 5 and flipping heads? Write your a
umka2103 [35]
<h2>Answer: <em><u>2/3 chance rolling less than 5 and 1/2 chance of flipping coin on heads. </u></em></h2>

<u />

Step-by-step explanation:

<h2 />

4 0
3 years ago
Express (2x-3)(x+5) as a trinomial
bekas [8.4K]
We simplify this expression by using the FOIL method, and get 2x²+10x-3x-15 = 2x²+7x-15.
---
Hope this helps!
==jding713==
3 0
3 years ago
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Isabel and Khalil buy peaches and apricots. At the fruit stand, peaches cost $0.85 each, and apricots cost $0.55 each. Tax is in
gladu [14]

The possible combination of the number of peaches and apricots they can get for $5 is 2 peaches and 5 apricots.

<h3>What is the possible combination?</h3>

The equation that represents the total cost of peaches and apricots is:

Total cost = (number of peaches x cost of one peach) + (number of apricots x number of apricots)

$5 = ($0.85 x p) + ($0.55 x a)

Total cost of buying 1 peach and 8 apricots:

($0.85 x 1) + ($0.55 x 8) = $5.25

Total cost of buying 2 peaches and 5 apricots:

($0.85 x 2) + ($0.55 x 5) = $4.45

Total cost of buying 3 peaches and 7 apricots:

($0.85 x 3) + ($0.55 x 7) = $6.40

Total cost of buying 4 peaches and 3 apricots:

($0.85 x 4) + ($0.55 x 3) = $5.05

To learn more about total cost, please check: brainly.com/question/25717996

#SPJ1

8 0
1 year ago
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