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3 years ago

13

URGENT PLS HELP! bag contains 25 white marbles and 10 black marbles you pick one marble at random what is the probability that y

ou pick a black marble

1 answer:

Diano4ka-milaya [45]3 years ago

8 0

Answer:

The answer is 28.6

Step-by-step explanation:

10/35 you get it in a percentage

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malfutka [58]

Divide total km by the km in the scale:

112 / 16 = 7

The answer is A. 7 cm

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3 years ago

Read 2 more answers

The midpoint of CD is M(-1,-2). One endpoint is C (-9,-4). Find the coordinates of the other endpoint D.

yan [13]

$\bf ~~~~~~~~~~~~\textit{middle point of 2 points }\\\\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&C&(~ -9 &,& -4~) 
% (c,d)
&D&(~ x &,& y~)
\end{array}\qquad
% coordinates of midpoint 
\left(\cfrac{ x_2 + x_1}{2}\quad ,\quad \cfrac{ y_2 + y_1}{2} \right)
\\\\\\
\left( \cfrac{x-9}{2}~~,~~\cfrac{y-4}{2} \right)=\stackrel{midpoint~M}{(-1~~,~~-2)}\implies 
\begin{cases}
\cfrac{x-9}{2}=-1\\\\
x-9=-2\\
\boxed{x=7}\\
----------\\
\cfrac{y-4}{2}=-2\\\\
y-4=-4\\
\boxed{y=0}
\end{cases}$

6 0

3 years ago

If the figure is a regular polygon solve for x 7x + 3

Lera25 [3.4K]

Answer:

The answer is 7 x + 3 =24 because its a problem solving

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3 years ago

200 labourers need 50 days to construct a road of 4 km long. How many labourers are needed to construct 8 km long in 80 days

patriot [66]

Answer:

250

Step-by-step explanation:

Number of labourers * Number of days worked = Total number of working days

Total number of working days to construct a 4km long road: $200*50=10000$

Total mumber of working days to construct a 8km long road: $10000*2=20000$

Labourers: 20000 ÷ 80 = 250.

250 labourers are required.

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3 years ago

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Artemon [7]

12 for the first one, 6*4=24 24 divided by 2

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3 years ago