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MrMuchimi
3 years ago
8

Solve by sunstitution y=-x+4, y=3x

Mathematics
1 answer:
enyata [817]3 years ago
4 0

Answer:

x=2

Step-by-step explanation:

y=-x+4   y=3x

3x=x+4

2x=4

x=2

(I hope this is the answer)

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The table below shows the data for a random sample of fish that were collected from and later released into a lake:
Olin [163]

Answer:

244

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
If a polynomial function f(x) has roots 6 and square root of 5, what must also be a root of f(x)?
ivolga24 [154]

Answer:

-\sqrt{5}

Step-by-step explanation:

A root with square root or under root is only obtained when we take the square root of both sides. Remember that when we take a square root, there are two possible answers:

  • One answer with positive square root
  • One answer with negative square root

For example, for the equation:

x^{2}=3

If we take the square root of both sides, the answers will be:

x=\sqrt{3} \text{ or } x= -\sqrt{3}

Only getting one solution with square root is not possible. Solutions with square root always occur in pairs.

For given case, the roots are 6 and \sqrt{5}. Therefore, the 3rd root of the polynomial function f(x) had to be -\sqrt{5}

It seems you made error while writing option B, it should be - square root of 5.

4 0
3 years ago
What is the axis of symmetry for the graph of y – 4x = 7 – x2 ?
yKpoI14uk [10]

the axis of symmetry is x=2

8 0
3 years ago
PLEASE HELPPPP<br><br> 4(x−2 1/4)=−3.7
LekaFEV [45]

First let’s convert the mixed numbers to improper fractions 2 1/4 =9/4
Then u get 4(X-9/4) =-3.7
Now your gonna divide both sides by four
4(X-9/4) over 4 = -3.7 over 4
4/4 =1 …X=-9/4
-3.7/4 = -0.925
Now you’re going to add 9/4 to each side
X-9/4+9/4=-0.925 +9/4
-9/4 + 9/4 =0 (X)
Now you have just -0.925 and nine fourths
I converted 9/4 —> 2.25
Then u still have -0.925
So add 2.25+-0.925 u get ur X which is 1.325 (this is ur answer)
5 0
2 years ago
Explain how you could use an equation like 12.50x = 15 to figure out original and increased/decreased prices and the mulitiplier
ExtremeBDS [4]

Answer:

1.2

Step-by-step explanation:

15 ÷ 12.50 = 1.2

12.50(1.2)= 15

7 0
3 years ago
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