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Leya [2.2K]
3 years ago
15

How to solve x+6y=1 and 2x-3y=32

Mathematics
1 answer:
il63 [147K]3 years ago
3 0

\left\{\begin{array}{ccc}x+6y=1\\2x-3y=32&\text{multiply both sidess by 2}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}x+6y=1\\4x-6y=64\end{array}\right}\\.\qquad5x=65\qquad\text{dicide both sides by 5}\\.\qquad\boxed{x=13}\\\\\text{Put the value of x to the first equation}\\\\13+6y=1\qquad\text{subtract 13 from both sides}\\\\6y=-12\qquad\text{divide both sides by 6}\\\\\boxed{y=-2}\\\\Answer:\ \boxed{x=13\ and\ y=-2\to(13,\ -2)}

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Multiple Choice<br>1. Which angle is a right angle? (1 point)​
SIZIF [17.4K]

Answer:

no one can answer this question since it doesn't show the choices, but if whichever one is 90 degrees/ has a little square in the corner would be the right answer

4 0
2 years ago
The screening process for detecting a rare disease is not perfect. Researchers have developed a blood test that is considered fa
lesya692 [45]

Answer:

Type I: 1.9%, Type II: 1.6%

Step-by-step explanation:

given null hypothesis

H0=the individual has not taken steroids.

type 1 error-falsely rejecting the null hypothesis

⇒   actually the null hypothesis is true⇒the individual has not taken steroids.

 but we rejected it ⇒our prediction is the individual has taken steroids.

typr II error- not rejecting null hypothesis when it has to be rejected

⇒actually null hypothesis is false ⇒the individual has taken steroids.

but we didnt reject⇒the individual has not taken steroids.

let us denote

the individual has taken steroids by 1

the individual has not  taken steroids.by 0

                            predicted

                              1       0

   actual          1    98.4%  1.6%

                        0   1.9%   98.1%

so for type 1 error  

 actual-0

predicted-1

therefore from above table we can see that probability of Type I error is 1.9%=0.019

so for type II error

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predicted-0

therefore from above table we can see that probability of Type I error is 1.6%=0.016

5 0
3 years ago
(12 points and brainliest!) A group of armed forces personnel were surveyed. The branch of service was recorded in the chart bel
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Answer:

43.2 degrees

Step-by-step explanation:

1. First, find the total number of people who were surveyed.

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2. Next, figure out how many the Marine Corps is out of those 500 people.

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3. Last, find out what degree the 12% would take up.

We know that a circle is 360 degrees. To find 12% of 360 degrees, you will do:

0.12*360=43.2

So, the answer is 43.2 degrees

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3 years ago
If a number is raised to a power of 2, it is <br> (a) cubed <br> (b) powered<br> (c) squared
d1i1m1o1n [39]
The answer is B and I am happy to help you out
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3 years ago
What is the area of the triangle?<br> 8 cm<br> 14 cm
german

Answer:

The answer is 56 cm2

Step-by-step explanation:

You have to multiply the height times the base then divide that answer by two.

8x14= 112

112/2= 56

4 0
3 years ago
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