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Naya [18.7K]
3 years ago
8

What is the sum of the polynomials ​

Mathematics
1 answer:
snow_lady [41]3 years ago
7 0

Answer:

it's B

4m-24n+3

Step-by-step explanation:

photo math

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Answer:

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3 years ago
I am sketching parabolas and my book is telling me that I need only two points. But I don't know how I am meant to sketch the pa
Sever21 [200]

Answer:

In order to sketch a parabola, one will typically use the y-intercept, the x-intercepts, and the vertex.

Step-by-step explanation:

In order to sketch a parabola, one will typically use the given equation in standard form, y = ax^2 + bx + c, and:

  • The y-intercept – the point where the parabola crosses the vertical axis – by substituting 0 for all <em>x</em> values in the given equation and solving for <em>y</em>.
  • The x-intercepts – the points where the parabola crosses the horizontal axis – by setting the given equation equal to 0 (i.e., <em>y</em> = 0) and finding the factors (or roots).
  • The vertex – the point of symmetry where the parabola changes direction and curves up or down – by using x=\frac{-b}{2a} to find the x-coordinate then plugging that value into the given equation to find the y-coordinate.
7 0
3 years ago
Four times the sum of a number and -3 is 28
tatuchka [14]

Answer:

The number is equal to 10

Step-by-step explanation:

Let x be the number

4(x-3)=28

x-3=7

x=10

8 0
3 years ago
You answered 21 out of 25 questions correctly on a test. Did you reach your goal of getting at least 80%?
Andreyy89
Yes! 21/25 is 84%. He passed his goal, yay!
5 0
4 years ago
Read 2 more answers
If x=3 is a solution of the equation x^2+kx+15=0, find the value of k. Hence find the other solution of the equation
eimsori [14]
X^2 + kx + 15 = 0
3^2 + 3k + 15 = 0
9 + 3k + 15 = 0
24 + 3k = 0
3k = -24
k = -24/ 3
k = -8
3 0
3 years ago
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