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Gennadij [26K]
3 years ago
13

4y-7x=16 solve for y

Mathematics
2 answers:
kompoz [17]3 years ago
4 0
I think the answer would be  x= 4/7 y = +-16/7
svet-max [94.6K]3 years ago
4 0
Y=7/4x+4. First, you add x to both sides. Then you divide 4 to both sides. This gives you y=7/4x+4
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Given that (-3,1) is on the graph of f(x), find the corresponding point for the function f(x-1)
Helen [10]

Answer:

(-2,1)

Step-by-step explanation:

So we are given f(-3)=1 since the point (-3,1) is on f(x).

We want to use this point to find a point on f(x-1).

Now,

f(-3)=1

and we want

f(x-1)=1

What would x need to be such that x-1 is -3.

x-1=-3

Add 1 on both sides:

x=-3+1

x=-2

x would need to be -2 in f(x-1)=1 in order to use that f(-3)=1.

So (-2,1) is the point for the function f(x-1) that corresponds to the point (-3,1) for f(x).

I know that f(x-1) would only be effecting our input because x-1 is the input.

8 0
3 years ago
Can someone help me with simple 8th grade math?
ad-work [718]
Yes im here ask away. I am doing calculus right now
7 0
4 years ago
Please solve this proportion with steps (I'm stuck)<br> (9x+6)/18= (20x+4)/3x
guapka [62]
\frac{9x+6}{18}=\frac{20x+4}{3x}

Cross multiply. Distribute...
3x(9x+6)=18(20x+4)\\27x^2+18x=360x+72\\27x^2-342x-72=0\\3x^2-38x-8=0

OH GOD IT'S A QUADRATIC
<em>(our equation is in ax² + bx + c = 0 form. a=3. b= -38. c= -8.
</em><em>plug these values into the quadratic formula and simplify.)</em>
x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}=\frac{-(-38)\pm\sqrt{(-38)^2-4(3)(-8)}}{2(3)}=\frac{38\pm\sqrt{1444+96}}6\\\\\sqrt{1444+96}=\sqrt{1540}=\sqrt{4\times345}=2\sqrt{345}\\\\\frac{38\pm2\sqrt{345}}6=\boxed{x=\frac{19\pm\sqrt{345}}3}

Approximate values for x: -0.20714 or 12.874

7 0
3 years ago
Read 2 more answers
Crunchy peanut butter cost $325 for 259 g. in shop b it costs $408 for 340 g.
Mariulka [41]
Shop B. This is cause shop A charges about $1.25 for each g of peanut butter, while Shop B charges only $1.20 for each g of peanut butter. Hope this helps!
6 0
3 years ago
What is the solution to the following equation?
MrRa [10]
I believe the answer is 3.
If you would like me to show my work please reply saying so.
Sorry if I'm wrong, but I hope this helps.

4(3x - 6) +15 = 27
Distributive Property
12x + -24 + 15 = 27
Add the two constants (numbers without variables)
12x + -9 = 27
Because 9 is negative, add 9 to both sides.
12x = 36
Divide both sides by the coefficient (number with x)
x = 3
6 0
3 years ago
Read 2 more answers
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