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3 years ago

Lisa draws a circle by tracing a round the botón of a block . Which could be the shape of lisa's block?

Mathematics

2 answers:

Mariulka [41]3 years ago

5 0

A cylinder by the sounds of it.

Thepotemich [5.8K]3 years ago

4 0

Cylinder if she draws a circle by tracing a block only logical explanation

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Which equations are equivalent to the given equation?

Strike441 [17]

49=-7k is equivalent to D because when you simplify both of them, you get -7=k

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3 years ago

Charlie guesses that his dog weighs 34.5 pounds. The dog actually weighs 32.7 pounds. What is the percent error in Charlie’s gue

zhuklara [117]

The answer is 5.5 % because 34.5x5.5=32.7

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3 years ago

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Given m ZLMN = 145°, what is m ZXMN?<br> Show all relevant work.

myrzilka [38]

80 degrees. 145 = (4x+5) + (6x-10) = 10x-5... so 10x = 150, x = 15. LMN = 6x-10 = 6(15) - 10 = 80.

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3 years ago

Find the value of n, correct to 4 significant figures.

Law Incorporation [45]

Answer:

6.708

Step-by-step explanation:

Y varies directly as the square of x (Given)

$\implies y\:\alpha \:x^2$ ......(1)

Y varies inversely as the square root of z (Given)
$\implies y\:\alpha\: \frac{1}{\sqrt z}$ ......(2)

Combining (1) & (2), we find:

$y\:\alpha \:\frac{x^2}{\sqrt z}$

$\implies y=\frac{kx^2}{\sqrt z}$ (Where k is constant of proportionality).....(3)

Now, when y = 2, x = 3 and z = 4, we find the value of k i.e. constant.

$2=\frac{k(3)^2}{\sqrt 4}$

$\implies 2=\frac{k(9)}{2}$

$\implies k =\frac{4}{9}$

Plugging the value of k in (3), we find:

$y=\frac{4x^2}{9\sqrt z}$ ....(4)

Next, in equation (4), plug y = 5, x = n and z = 16 and obtain the value of n by solving it.

$5=\frac{4(n)^2}{9\sqrt {16}}$

$\implies 5=\frac{4(n)^2}{9(4)}$

$\implies 5=\frac{(n)^2}{9}$

$\implies 5(9)=(n)^2$

$\implies 45=(n)^2$

$\implies n=\sqrt{45}$

$\implies n=6.70820393$

$\implies n\approx 6.708$

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1 year ago

20 POINTS BRAINLIEST

RSB [31]

Answer:

Step-by-step explanation:

Exponential decay should be in this format A = Ao × e^(-kt)

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3 years ago