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4 years ago

11

Quanto é 40 de 45% preciso urgente

1 answer:

saw5 [17]4 years ago

5 0

My Spanish isn't that great but I think you're looking for 18

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Estimate the sum. Use benchmarks with decimal parts of 0, 0.25, 0.50, or 0.75.

max2010maxim [7]

The answer would be A. 6.50. This is because 2.52 would be about 2.50 and 4.03 would be about 4 and 2.50 + 4 = 6.50

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3 years ago

Form the perfect square trinomial in the process of completing the square. What is the value of c?

oksian1 [2.3K]

Answer:

The answer is 9/4

Step-by-step explanation:

8 0

3 years ago

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Multiply and simplify: 2a(7a^a-3a+9)

Inessa [10]

If a were 1, The answer would be:

26

Hope this helps:)

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4 years ago

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Nellie prepares 2 kilograms of dough every hour she works at the bakery. How many hours

belka [17]

2 kg dough = 1 hour

1 kg dough = 1 hour/2 = 1/2 hour

6 kg dough = 6 × (1/2 hour) = 6/2 hours = 3 hours

6 0

3 years ago

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Write the standard equation of a circle with center (-2,5) and the point (4,13) on the circle

n200080 [17]

since the point (4,13) is on the circle, then the distance from the center to it, is the radius of the circle.

$\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{-2}~,~\stackrel{y_1}{5})\qquad (\stackrel{x_2}{4}~,~\stackrel{y_2}{13})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ \stackrel{radius}{r}=\sqrt{[4-(-2)]^2+[13-5]^2}\implies r=\sqrt{(4+2)^2+(13-5)^2} \\\\\\ r=\sqrt{36+64}\implies r=\sqrt{100}\implies r=10 \\\\[-0.35em] ~\dotfill$

$\bf \textit{equation of a circle}\\\\ (x- h)^2+(y- k)^2= r^2 \qquad center~~(\stackrel{-2}{ h},\stackrel{5}{ k})\qquad \qquad radius=\stackrel{10}{ r}\\[2em] [x-(-2)]^2+[y-5]^2=10^2\implies (x+2)^2+(y-5)^2=100$

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3 years ago