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777dan777 [17]
3 years ago
12

Solve the following system using substitution

Mathematics
2 answers:
Alborosie3 years ago
7 0
If left sides of equation equal (and they are same) - right must also be equal

If no - there is no solutions
julsineya [31]3 years ago
5 0
Change x+y=5 to y=5-x
x+5-x=-3
0=-8
The answer is no solution. :)
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These marbles are placed in a bag and two of them are randomly drawn. What is the probability of drawing two pink marbles if the
Shalnov [3]

Answer:

2/10 * 2/10 = 1/25

Step-by-step explanation:

Suppose you have 10 marbles in a bag.

5 black , 2 pink and 3 blue

As if two pink marbles are selected then

for one pink marble

probability = event occurred / total outcomes

                 = 2/10

Similar probability for an other pink marbles

Probability for the drawing two pink marbles is

P = 2/10 * 2/10

 = 1/25

4 0
3 years ago
Please help, this makes no sense to me
aev [14]

Answer:

7/11

Step-by-step explanation:

Let X equal the decimal number

Equation 1:

X=0.63¯¯¯¯¯

With 2 digits in the repeating decimal group,

create a second equation by multiplying

both sides by 102 = 100

Equation 2:

100X=63.63¯¯¯¯¯

Subtract equation (1) from equation (2)

100XX99X===63.63...0.63...63

We get

99X=63

Solve for X

X=6399

Find the Greatest Common Factor (GCF) of 63 and 99, if it exists, and reduce the fraction by dividing both numerator and denominator by GCF = 9,

63÷999÷9=711

Therefore

X=711

In conclusion,

0.63¯¯¯¯¯=711

used

https://www.calculatorsoup.com/calculators/math/decimal-to-fraction-calculator.php

6 0
2 years ago
$316 for 4 dvd players
Montano1993 [528]
79 dollors for each dVd
5 0
2 years ago
Read 2 more answers
Alex drove 135 miles in 3 hours at a constant speed
Dominik [7]
Speed = distance / time
speed = 135/3 = 45 miles per hr <==
7 0
3 years ago
564 in scientific notation
MAXImum [283]

Answer:  5.64 *10^2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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