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Paladinen [302]
3 years ago
9

Stop giving me links and HELP ME. I will mark BRAINLIEST

Mathematics
1 answer:
Vadim26 [7]3 years ago
3 0

Answer:

y = 3

Step-by-step explanation:

substitute the x in 2x - y = 7 by x = 3y - 4 and then solve

2(3y - 4) - y = 7

<em>Distribute the 2 into the parenthesis</em>

6y - 8 -y = 7

<em>combine like terms</em>

5y - 8 = 7

<em>add 8 on both sides</em>

5y = 15

<em>divide by 5 on both sides to isolate the y-value</em>

y = 3

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Graph the line with slope -8 and y-intercept 9.
salantis [7]

Answer:

the coordinates will be (0,9) (-8,0) and the equation will be y=(9/8x)+9

Step-by-step explanation:

Im not 100% sure but if im right please mark me as brainliest

8 0
3 years ago
5a+3-4a²+2a³ sandard form
tester [92]
2a^3-4a^2+5a+3

Explanation:

For standard form you always start with the one that has the biggest exponent to the least one
4 0
2 years ago
<img src="https://tex.z-dn.net/?f=5x%5E%7B2%7D%2B%7Cx%2B1%7C%5C%20%5Ctextgreater%20%5C%200" id="TexFormula1" title="5x^{2}+|x+1|
Pavel [41]
5x² + |x+1| > 0
5x² + x + 1 > 0
x+1 > 0 because it came from absolute
5x² > 0 because it’s squared

When you try a number you should put it in the original equality
5x² + |x+1|
7 0
2 years ago
Solve -9.4 &gt; 1.7x + 4.2. I need this ASAP
Marat540 [252]

Hello.

We are solving -9.4 > 1.7x + 4.2.

First we need to swap sides:

1.7x + 4.2 = -9.4

Now we need to subtract 4.2 from both sides.

1.7x + 4.2 = -9.4

        -4.2 .  -4.2

Now let's combine -4.2 + 4.2 which is 0.

We get 1.7x < -9.4 - 4.2

Now let's divide both sides by 1.7

1.7x | -13.6

1.7     1.7

x < -13.6

      1.7

So we just divided to get x < -8.

3 0
3 years ago
Read 2 more answers
Can anyone solve this:
ludmilkaskok [199]
So fuctions mean
if
f(x)=x+2 then if you put in 3 for x then
f(3)=3+2=5 so

if x=years after 2000
in 2020 then
2020-2000=20 so x=20
subsitute
f(20)=9204e^0.022(20)

e could be:
1. common base of logarithms (memorised to 15 decmals) 2.718281828459045
2. a computer notation exg if you have 3e11 that means 3 times 10^11

if it is 1
9240 times (2.718281828459045^(0.022 times 20))=( simplify exponent first) 9240 times (2.718281828459045^0.44)=9204 times 1.5527072185113=14291.1 or rounded to 14291

if it is 2
9204 times 10^(0.022 times 20)=9204 times 10^(0.44)=9204 times 254.491 rounded to 254


so the answer dependes on what e represents,

if e is:
1. common base of logarithms (memorised to 15 decmals) 2.718281828459045, then answer is 14291

2. a computer notation exg if you have 3e11 that means 3 times 10^11 =254

7 0
3 years ago
Read 2 more answers
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