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Paha777 [63]
3 years ago
13

Perry designed the murals by drawing small sketches first. His sketch for a mural measures 5 inches wide by 7 in. tall. If he wa

nts to paint it on a wall that’s 45 feet wide, how tall must it be to stay in proportion?
Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
5 0

Answer:

90

Step-by-step explanation:

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What are the coordinates of the image of Q for a dilation with center (0, 0) and scale factor 1/2?
Amanda [17]
The answer would be D. (2,2)
Since the scale factor is 1/2, all you have to do is multiply 1/2 by each of x-coordinate and y-coordinate of Q.
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8 0
3 years ago
Anybody know this I don't want to go to summer school I'm being serious pls help
irina1246 [14]

Answer:

the bus is travelling faster

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Step-by-step explanation:

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5 0
3 years ago
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The Lopez family and the Russell family each used their sprinklers last summer. The water output rate for the Lopez family's spr
grin007 [14]
L = hours used by the Lopez's sprinkler

R = hours used by the Russell's sprinkler

so, we know the Lopez's sprinkler uses 15 Liters per hour, so say after 1 hour it has used 15(1), after 2 hours it has used 15(2), after 3 hours it has used 15(3) liters and after L hours it has used then 15(L) or 15L.

likewise, the Russell's sprinkler, after R hours it has used 40R, since it uses 40 Liters per hour.

we know that both sprinklers combined went on and on for 45 hours, therefore whatever L and R are, L + R = 45.

we also know that the output on those 45 hours was 1050 Liters, therefore, we know that 15L + 40R = 1050.

\bf \begin{cases}
L+R=45\implies \boxed{L}=45-R\\
15L+40R=1050\\
----------\\
15\left(\boxed{45-R}  \right)+40R=1050
\end{cases}
\\\\\\
675-15R+40R=1050\implies 25R=375\implies R=\cfrac{375}{25}\\\\\\ R=15

how long was the Lopez's on for?  well, L = 45 - R.
7 0
3 years ago
1. x=1/(root3-root2). find rootx-(1/rootx) 2. if x=[root(a+2b)+root(a-2b)]/[root(a+2b)-root(a-2b]. show that bx^2-ax+b=0
timofeeve [1]
1. x = 1/ ( \sqrt{3} -  \sqrt{2)} = \sqrt{3}+  \sqrt{2};
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6 0
3 years ago
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Question 5
anzhelika [568]

Answer:anwser would be c

Step-by-step explanation:

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