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galben [10]
3 years ago
8

Which lines are parallel? how do you know?

Mathematics
1 answer:
Brilliant_brown [7]3 years ago
6 0
Lines B and C are parallel as they have the same slope
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For which equations are in the solution for x the same number? 15 – х = -3<br> 3
Norma-Jean [14]

Answer:

Step-by-step explanation:

First equation:

          15 - x = - 3

           -x = - 3 - 15

          -x  =  -18  (now negative signs on b.s cut eachother)

            [x  =  18]

Second equation :

         15 - x = 3

          -x = 3 - 15

          - x = -12 ( now negative sign on b.s cut eachother)

            [x = 12]

so x = 18 and x = 12 are not same

6 0
3 years ago
Which of the following is equivalent to (1/2)^-2t
Zepler [3.9K]

Answer:

Choice (3) \left(2^2\right)^t is correct.

Step-by-step explanation:


Given expression is \left(\frac{1}{2}\right)^{-2t}

Now we need to simplify this and check which of the given choices best match with it.

\left(\frac{1}{2}\right)^{-2t}

=\left(\frac{1}{2^1}\right)^{-2t}

=\left(2^{-1}\right)^{-2t} {using formula =\frac{1}{x^m}=x^{-m}}

=\left(2^{-1}\right)^{-2t} {using formula =\left(x^m\right)^n=x^{\left(m\cdot n\right)}}

=2^{\left(-1\right)\left(-2t\right)}

=2^{2t}

=\left(2^2\right)^t {using formula =\left(x^m\right)^n=x^{\left(m\cdot n\right)}}

Hence choice (3) \left(2^2\right)^t is correct.

8 0
3 years ago
Read 2 more answers
Imagine that 30% of all U.S. Households own a dog, P(A)=.3 and that 10% of U.S. households own a Honda vehicle, P(B)=.1. In addi
Ksivusya [100]
P(A|B)= P(B and A) / P(A)

P(B and A) = .3 + .10 = .13 P(A)= .3

So,
P(A|B)= .13/.3

P(A|B)= 0.43333...
3 0
3 years ago
Y = 10 - 2x<br> x = y - 4<br> How do you solve this system using substitution?
astraxan [27]

Answer:

im not sure what answer you are trying to find but i hope this helped

Step-by-step explanation:

y = 10 - 2x

x = y - 4

(input x)

y = 10 - 2(y - 4)

y = 10 - 2y + 8

3y = 10 + 8

3y = 18

y = 6

4 0
3 years ago
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Do 8:14 and 20:35 form a proportion
IRISSAK [1]

Answer:

8:14 could go to 4:7, and 20:35 can go to 4:7, so yes

Step-by-step explanation:


5 0
4 years ago
Read 2 more answers
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