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3 years ago

What's the answer to 16x-10y=10 -8x-6y=6

1 answer:

7 0

$\begin{cases} 16x-10y=10 \\ -8x-6y=6 \ \ /*2\end{cases}\\ \\\begin{cases} 16x-10y=10 \\ -16x-12y=12 \end{cases}\\ + --------\\ -22y=22 \ \ /:(-22) \\ \\ y=-1$

$16x-10*(-1)=10\\ \\16x+10=10\\ \\16x=10-10\\ \\16x=0 \\ \\x=0 \\ \\ \begin{cases}x=0 \\ y=-1\end{cases}$

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The dual bar chart shows the hair colour of boys and girls in a year group. What fraction of the red haired students are boys? G

Step2247 [10]

Answer:

$\frac{3}{4}$

Step-by-step explanation:

Total red haired students = 15+5 = 20

Boys = 15

<u><em>Fraction:</em></u>

=> $\frac{15}{20}$

<u><em>In simplest form:</em></u>

=> $\frac{3}{4}$

3 0

4 years ago

What is the value of the 2 in 5,678.321

STALIN [3.7K]

.020 because it is 2 spots behind the decimal

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3 years ago

The world famous gambler from Philadelphia, Senor Rick, proposes the following game of chance. You roll a fair die. If you roll

Orlov [11]

Answer:

You lose $0.833 while Rick gains $0.833, and so Rick is not Loco

Step-by-step explanation:

There are six numbers on a dice. Thus, probability of rolling exactly one number = 1/6

Probability of rolling two is 2/6.

Rolling a 1 pays $25, and probability = 1/6

Rolling a 2 pays $5,and probability = 1/6

Rolling a 3 pays $0, and probability = 1/6

Rolling a 4 or 5 pays -$10, and probability = 2/6

Rolling a 6 pays -$15, and probability = 1/6

Thus,lets calculate the expected value;

EV = (25 × 1/6) + (5 × 1/6) + (0 × 1/6) + (-10 × 2/6) + (-15 × 1/6)

EV = - $0.833

This means you lose $0.833 while Rick gains $0.833, and so Rick is not Loco.

7 0

3 years ago

Help plz answer what is 4.6-2.46

kykrilka [37]

Answer:

2.14

Step-by-step explanation:

Basically its like regular subtraction

4.6

2.46

________

2.14

4 0

3 years ago

Based upon historical data, it is known that 8% of 12-egg cartons contain at least one broken egg. A grocery store manager would

kakasveta [241]

Based on the 5 trials, 1 carton of eggs is expected to contain at least one broken egg, on average

<h3>How to determine the number of cartons</h3>

From the question, we understand that only one of the first 10 double-digit numbers is between 01 and 08

This means that:

The average carton or the expected value of eggs in the simulation is 1

Hence, 1 carton of eggs is expected to contain at least one broken egg, on average