3 years ago

Use the substitution method to solve the system of equations. Choose the

Mathematics

1 answer:

Irina-Kira [14]3 years ago

6 0

Step-by-step explanation:

Y=9

Replace y in the equation:x+9=3

X=9-3=6

So it's D(6,9)

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Which of the following choices is the y-intercept of the equation –3x – 2y = 10?

Mekhanik [1.2K]

-3x-2y=10
-2y=3x+10
y=-3/2x -5
If you put x as a value of 0 you will get that the y-intercept will end up being -5

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Reil [10]

Answer:A

Step-by-step explanation:

For SSS you need all sides

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Mai and Tyler work on the equation 2/5b+1=-11 together. Mais soulution is b=-25 and Tyler’s is b=-28. Here is their work. Do you

Anika [276]

Answer:

No I don't agree with their solution; both their answers are wrong.

Correct answer is $b=-30$ .

Step-by-step explanation:

Given:

$\frac{2}{5}b+1=-11$

Now given:

According to Mai $b = -25$ and According to Tyler $b = -28$

Now we need to find which of them is correct.

So we will solve the given equation we get;

$\frac{2}{5}b+1=-11$

Subtracting both side by 1 we get;

$\frac{2}{5}b+1-1=-11-1\\\\\frac{2}{5}b =-12$

Now Multiplying both side $\frac{5}{2}$ we get;

$\frac{2}{5}b\times\frac{5}{2}= -12 \times \frac{5}{2}\\\\b=-6\times 5\\\\b=-30$

Hence both of them are incorrect, correct answer is $b=-30$ .

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Which graph represents a quadratic function with a vertex at (0, 0)?

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The 3rd one. (where the round part of the graph is at 0, 0) because that is where the y axis meets

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