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qaws [65]
3 years ago
6

Solve for x & y. 30x−42y=−6 and 5x−7y=−1

Mathematics
1 answer:
vladimir1956 [14]3 years ago
4 0
Um.. Both of those equations are the exact same. Divide both sides of the first equation by 6. You get:

\frac{30x  - 42y}{6} = \frac{-6}{6} \\ 5x - 7y = -1

That is the exact same as the second equation. This system has an infinite number of solutions. 5x - 7y = -1 is a line, so basically every point on that line is a solution to the system.

For example, x = 0 and y = \frac{1}{7} would work, but so would x = 1 and y = \frac{6}{7}
You might be interested in
State is the triangles are similar. If so, State how you know they are similar and complete the similarity statement
melisa1 [442]

Answer:

  • b. not similar

Step-by-step explanation:

We see 3 different angle measures and the triangles have only one congruent angle. There is no evidence of side measures.

We don't have sufficient information to state the triangles are similar.

4 0
3 years ago
BEST ANSWER GETS BRAINLIEST AND 3 THANKS I NEED HELP WITH THIS PLZ THANK YOU
Alenkinab [10]
Ok so remember
order of simplification
PEMDAS
parenthaseese
exponents
multiplicaton or division whichever comes first
addition or subtraction whichever comes first

ok so remmeber work from the left to right parenthasees first and work from inside to outer parenthasees

so first one

innermost parenthasees first so
first step is 2-4
subtract 4 from 2


second one
if xy=0 then assume x and y=0 so
(a+2)(b-9)=0
a+2=0
a=-2

b-9=0
b=9

so answe ris a=-2
b=9


third questions

innermost parenthaees first
subtract 4 from 2






ok
1. subtrac 4 from 2
2. a=-2, b=9
3. subtract 4 from 2
7 0
4 years ago
20 points for you i really need this
Alika [10]

<em><u>Answer:</u></em>

The answer is A) The y-intercept of function A is greater than the y-intercept of function B.

<em><u>Step-by-step explanation:</u></em>

We can see by graphing function A that the y-intercept (where the graph crosses the y-axis) is (0,3). For function B, we can see that the y-intercept is (0,2). Therefore, we know that 3 is greater than 2, so the y-intercept for function A is greater than that of function B. <em>I'll attach a photo of the first function graphed online.</em>

Hope this helps! Feel free to give me Brainliest if you feel this was helpful. Have a good day and good luck on your assignment! :)

6 0
3 years ago
Read 2 more answers
2х + 5y = 6<br>x+2y = -3 <br><br>what is x?​
likoan [24]

Answer:

x = -3

In-Depth Steps:

1.) Start with the bottom equation: x+2y=-3

2.) Set x alone on one side of the equal sign. Your equation will look like 3+2y=x.

3.) Plug 3+2y in for x in the first equation. You will get 2(3+2y)+5y=6.

4.) Distribute. Your equation now looks like this: (6+4y)+5y=6.

5.) Combine like terms. You will get 6+9y=6.

6.) Subtract 6 from both sides. You get 9y=0. We can learn that Y=0.

7.) Go back to either equation and put 0 in for y.

8.) In the top equation, it would look like 2x=6 and the bottom equation would look like x=-3. We basically got our answer of x = -3, but we will plug it into the 2x=6 equation, and in-fact, we get x = -3.

8 0
4 years ago
Simplify<br><img src="https://tex.z-dn.net/?f=%20%7B3%7D%5E%7B2%7D%20%20%2B%20%20%7B3%7D%5E%7B4%7D%20%20%20%20%20%2B%20%20%20%7B
Dafna11 [192]
Well, is not a product, just a sum of three terms, so to simplify simply expand and combine them as constants,

3²  +  3⁴  + 3⁷ 

9   +  81  + 2187

2277
3 0
3 years ago
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