John,amy,lee all have 0.5 of a pack of marbles. How much more marbles do they need until they get a whole pack?

1 answer:

3 0

It depends on if you mean that they need to have a whole number or not, if not then they would not need any more because they would already have 1.5 packs. If they do need a whole number then they would need 0.5 more packs

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(02.01 LC) Simplify 4 over 7 ÷ 3 over negative 8. negative 32 over 21 negative 3 over 14 3 over 14 32 over 21

zhannawk [14.2K]

Answer:

(4/7)÷ (3/-8). Division of fractions is the same as multiplying their reciprocals. So (4/7) x (-8/3). Now multiply the numerators together and denominators together (make sure you only use the negative sign once). (4 x -8) / (7 x 3) = -32/21

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2 years ago

Write the equation of a circle with center at (3, -2), which also passes through the point (0, 2).

Airida [17]

$\text{The equation of acircle:}\\\\(x-h)^2+(y-k)^2=r^2\\\\(h;\ k)-center\\r-radius\\\\\text{We have center}\ (3,\ -2)\to h=3\ \text{and}\ k=-2.\\\\\text{The radius is the distance between the points} (3,\ -2)\ \text{and}\ (0,\ 2).\\\\\text{The formula of a distance between two points:}\\\\d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\\\\text{Substitute:}\\\\d=\sqrt{(2-(-2))^2+(0-3)^2}=\sqrt{4^2+(-3)^2}=\sqrt{16+9}\\\\=\sqrt{25}=5\\\\Answer:\ \boxed{(x-3)^2+(y-(-2))^2=5^2\to\boxed{(x-3)^2+(y+2)^2=25}}$

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Why is it practical to know standard diaviation?

nexus9112 [7]

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3 years ago

Graph the equation y=5

sergejj [24]

Answer:

put a dot on 5 on the y-axis and draw a horizontal line through the dot.

Step-by-step explanation:

Hoy=horizontal line= slope is 0=y-axis

Vux=vertical line=slope is undefined=x-axis

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djyliett [7]

Answer:

C) 52

Step-by-step explanation:

= 2x 4x 3x 2x 3x 2x 4

Hope this helps!

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