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Lapatulllka [165]
3 years ago
7

I need help ASAP please

Mathematics
1 answer:
Alona [7]3 years ago
4 0
Joby is correct, but Diana is not

because Diana showed how to do supplementary angles and Joby showed how to do vertical angles and showed that vertical angles are congruent. The question said to prove that vertical angles are congruent 

Therefore, Joby is correct, but Diana is not
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which of these shows the result of using the first equation to substitute for y in the second equation, then combining like term
Furkat [3]

Answer:

C. \Rightarrow \bold{8x = 16}

Step-by-step explanation:

Given the two equations:

y=2x ........ (1)\\ 2x+3y=16.......(2)

To find:

The correct option when value of y is substituted to 2nd equation using the 1st equation.

Solution:

First of all, let us learn about the substitution method.

Substitution method is the method to provide solutions to two variables when we have two equations and two variables.

In substitution method, we find the value of one variable in terms of the other variable and put this value in the other equation.

Now, the other equation becomes only single variable and then we solve for the variable's value.

Here, we have two equations and value of one varible is:

y=2x

Let us put value of y in 2nd equation:

2x+3y=16\\\Rightarrow 2x + 3(2x) = 16\\\Rightarrow 2x + 6x = 16\\\Rightarrow \bold{8x=16}

So, the correct answer is option C. \Rightarrow \bold{8x = 16}

7 0
3 years ago
What fraction must be subtracted from the sum of 1/4 and 1/6 to have an average of 1/12 of all the two fractions
DanielleElmas [232]

Answer:

so 1/3 must be subtracted from the sum of 1/4 and 1/6 to have an average of 1/12 of all the two fractions.

Step-by-step explanation:

let the fraction be x

(1/4 + 1/6)-x =  1/12

or, 10/24 - x = 1/12

or, 5/12-1/12 = x

so, x = 4/12 = 1/3

8 0
3 years ago
Free Brainly just tell me your fav animal and breed of animal THANKS LOVES
Helga [31]

Answer:

Foxes

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Does anyone know the slope of this table?
ArbitrLikvidat [17]

Answer: the slope is 2/1 or 2

Step-by-step explanation: slope is written rise over run, meaning y/x. By finding the difference between 13/5 and 17/7, then 17/7 and 21/9 to confirm, you can see that the difference is 4/2, which reduces to 2/1, which is simplified to 2.

6 0
2 years ago
A bag contains 1 gold marbles, 6 silver marbles, and 30 black marbles. Someone offers to play this game: You randomly select on
Feliz [49]
You have a 30 out of 37% chance  so i would say 53 cents
i hope this helps at least a little

good luck!
7 0
3 years ago
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