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slega [8]
2 years ago
10

(7 + 18) x 3÷ (2 + 13) -28

Mathematics
1 answer:
galina1969 [7]2 years ago
6 0

I was not sure if the x is multiplication or not. if it is its then its -23 if its not its 5x-28. I hope this helps.

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Find the number of roots for each equation.<br> 5. 5x4 + 12x3 – x2 + 3x + 5 = 0
pav-90 [236]

Answer:

The number of roots for  equation 5x^4 + 12x^3 – x^2 + 3x + 5 = 0 is 4 .

Step-by-step explanation:

Here, the given function polynomial is :

P(x) : 5x^4 + 12x^3 – x^2 + 3x + 5 = 0

The Fundamental Theorem of Algebra says that a polynomial of degree n will have exactly n roots (counting multiplicity).

Now here, the degree if the polynomial is 4 (highest power of variable x).

So, according to the Fundamental Theorem, the given polynomial can have AT MOST 4 roots, counting Multiplicity.

Hence,  the number of roots for  equation 5x^4 + 12x^3 – x^2 + 3x + 5 = 0 is 4 .

7 0
3 years ago
Madison spent 3 times as long on her social project as she did on her other project. If she spent a total of 8 hours on he proje
deff fn [24]

Answer:

6 hours

Step-by-step explanation:

Suppose Madison spent x hours on her social project,

then the number of hours spent on other project will be 1/3 of x=x/3

Total hours spend on all projects will be the addition of hours spent on social project and hour spent on other project, i.e

x + x/3 = 4x/3

It si given that this is 8 hours, therefore

4x/3=8

Multiplying both sides by 3:

4x=24

Dividing across board by 4:

x= 6 hours

5 0
3 years ago
I appreciate if y’all help me ^^
stich3 [128]

Answer:

24 ft²

Step-by-step explanation:

The formula to solve for area of a triangle is: \frac{1}{2} bh. First multiply the base x height: 12 x 4 = 48. Now multiply by 1/2: 48 x 1/2 = 24. Your answer is 24 ft².

Hope it helps and is correct!

6 0
3 years ago
What are the coordinates of the image of vertex D after a reflection across the x-axis?
alex41 [277]

Answer:

Where is the image

Step-by-step explanation:

3 0
3 years ago
If y=3 when x=12, find y when x=24.
Brilliant_brown [7]

Answer:

y = 6

Step-by-step explanation:

24/12 = 2  

2*3 = 6

3 0
3 years ago
Read 2 more answers
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