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nekit [7.7K]
3 years ago
13

Please help me I can’t figure it out NO LINKS LINKS=REPORT

Mathematics
2 answers:
shusha [124]3 years ago
7 0

Answer:

x = 3

y = 8

Step-by-step explanation:

ok we will substitute

y = x + 5

into the second equation

4x + y = 20

4x + (x + 5) = 20

5x + 5 = 20

5x = 15

x = 3

y = x + 5 = 3 + 5 = 8

Yuliya22 [10]3 years ago
3 0

Answer:

4(3)+y=20

Step-by-step explanation:

4*3=12

Y= 3+5

3+5=8

12+8=20

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sam thought of a number between ten and twenty then sam gave a clue when you count by twos and when you count by threes but not
tatuchka [14]
Sorry I do not know the answer to that
8 0
3 years ago
A and B are two events. Let P(A) = 0.3, P(B) = 0.9, and P(Aand B) = 0.24. Which statement is true?
gavmur [86]

Answer:

blue one (c), not independent because P(A|B) ≠ P(A)

Step-by-step explanation:

Two events are independent of each other if you can mulitply them to get their intersection

To find the conditonal probability of two independent events you can use the following idea/formula

P(A|B)= (P(A)*P(B))/P(B) which simplifies to P(A) (so the probability of A given B when A and B are independent of each other is just the probability of A)

Now with the numbers we're given let's find P(A|B)

.24/.9= .26666666666667

Because this is not equal to .3 (or P(A)) the answer must be the blue one

4 0
3 years ago
How do you factor x squared minus 5a squared equals negative 4ax into a solution set?
Pie
I hope this explains it

3 0
4 years ago
Read 2 more answers
How long did it take Sandra to
zysi [14]

Answer:

1 hour a mile

Step-by-step explanation:

5 0
3 years ago
1. A line segment has endpoints of Y(2,-3) and Z(-6,-1).
Orlov [11]

The answers will be :

a. The length of the line segment will be equal to 8.24 units.

b. The midpoint of the line segment will be ( -2 , -2 ).

c. The equation of line passing through points Y and Z will be 4y + x - 10 = 0

What is slope of a line segment ?

The ratio of the difference in y-coordinates over the equivalent x-coordinates between two different locations on a line.

It is given that a line segment has endpoints of Y(2,-3) and Z(-6,-1).

Let's solve the given parts based on the above data.

a.

The length of the line segment will be given by :

YZ = \sqrt({x_{2} - x_{1})^2 + (y_{2}- y_{1})^2}

YZ = √ [( -6 -(2)]^2 + [ -1 - (-3)]^2}

YZ = √ (-8)² + 2²)

YZ = √68

YZ = 8.24 units

b.

The midpoint (say M) of the line segment will be given by :

M = ( \frac{x_{1} + x_{2} }{2} , \frac{y_{1} + y_{2} }{2})

M = [(2-6)/2 , (-3-1)/2]

M = ( -2 , -2 )

c.

And the equation of line passing through points Y and Z will be :

y_{2} - y_{1} = m ( x_{2} - x_{1} )

Let's calculate value of slope (m) firstly which will be :

m =(y_{2} - y_{1}) / ( x_{2} - x_{1} )

m = ( -1 + 3 ) / (-6 - 2)

m = 2 / -8

m = -1 / 4

or

m = -0.25

Using the value of slope (m) : we get the equation of line as :

y - y_{1} = - 0.25 ( x - x_{1} )

or

(y + 3) = - 0.25 ( x - 2)

y + 3 = -0.25 x + 0.50

or

y + 0.25 x - 2.5 = 0

If we multiply by 4 throughout the equation ; then the equation of line can also be written as :

4y + x - 10 = 0

Therefore the answers will be :

a. The length of the line segment will be equal to 8.24 units.

b. The midpoint of the line segment will be ( -2 , -2 ).

c. The equation of line passing through points Y and Z will be 4y + x - 10 = 0

Learn more about line segment here ;

brainly.com/question/23629348

#SPJ1

5 0
1 year ago
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