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garik1379 [7]
2 years ago
12

True or false? help please

Mathematics
2 answers:
Andru [333]2 years ago
3 0

Answer:

True

Step-by-step explanation:

Parallel lines always have the same slope, so therefore the answer is True

saveliy_v [14]2 years ago
3 0

Answer:

True!

Step-by-step explanation:

These equations are parallel, because all equations that are parallel are going to have the same slope, and both of these equations have the same slope! If it was 5/3 and -3/5, then it would be perpindicular, because that is the negative reciprocal! I hope this helps!

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ASAPPP!!!!!
Sergio039 [100]

Answer:

185

Step-by-step explanation:

45 +70(2) = 185

5 0
3 years ago
What do you do if you have 9 times 2
OlgaM077 [116]

Answer:

18

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Simplify (2x + y)(x - 2y) - (x + 2y)(2x - y) as much as possible.
snow_tiger [21]

Answer:

-6xy

Step-by-step explanation:

(2x-y)x(x-2y)-(x+2y)X(2x-y)

remove the parentheses

2x^2-4xy+xy-2y^2-(2x^2-xy+4xy-2y^2)

collect terms

2x^2-4xy+xy-2y^2-(2x^2+3xy-2y^2)

remove the parentheses

2x^2-4xy+xy-2y^2-2x^2-3xy+2y^2

remove the opposites, collect the terms to get -6xy

4 0
3 years ago
The heights of male students are normally distributed with a mean of 160 cm and a standard deviation
Andreyy89

Answer:

he heights of a group of women are normally distributed with a mean of 170 centimeters and a standard deviation of 10 centimeters. What is the  -score of a member of the group who is 165 centimeters tall?

Step-by-step explanation:

4 0
2 years ago
Solve the following system of equations.
Tomtit [17]
There a number of methods in solving a system of equations. These methods are the substitution method, solving by graphing, gaussian elimination and by elimination method. For this case, we use the substitution method. To do this, we write one of the equation in a way where one variable is left on one side. We do as follows:

<span>−0.9x+0.5y=3.9 
0.5y = 3.9 + 0.9x
y = 3.9/0.5 + 0.9x/0.5
y = 7.8 + 1.8x

Then, we subsitute this equation to  variable y in the second equation. 
</span>0.4x+1.5(7.8 + 1.8x)=−6.9

Then, we solve for x
0.4x+1.5(7.8 + 1.8x)=−6.9
0.4x+11.7 + 2.7x=−6.9
3.1x = -18.6
x = -6

We substitute this value of x, to the first equation to solve for y
y = 7.8 + 1.8x
y = 7.8 + 1.8(-6)
y = -3


4 0
3 years ago
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