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3 years ago

Multiple the sum of a number and 3 by the difference of 8 and the number

Mathematics

1 answer:

Whitepunk [10]3 years ago

6 0

Answer:

-n^2 - 5n + 24

Step-by-step explanation:

Let the number be n.

Then the sum of that number and 3 is n+3.

The difference of 8 and the number is 8 - n.

Then we get the expression (n + 3)(8 - n).

Performing the indicated multiplication, we get:

8n - n^2 + 24 - 3n, or

-n^2 - 5n + 24

Nothing more can be done, as this is not an equation, but rather an expression.

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Find the zeros of the following quadratic polynomials and verify the relationship between the zeroes and the coefficients

Anna [14]

Answer:

Zeros would be x= 0, -2

Step-by-step explanation:

hope this helps :)

6 0

2 years ago

The given statement is true or t<br> (-4+6i)-(12-5i) = -16+ i

Pavel [41]

The answer is x=mc^2

8 0

1 year ago

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What is the equation of a line passes thru the point (4, 2) and is perpendicular to the line whose equation is y = ×/3 - 1 ??

cupoosta [38]

Answer:

Perpendicular lines have slopes that are opposite and reciprocal. Therefore, the line we are looking for has a -3 slope.

y= -3x+b

Now, we can substitute in the point given to find the intercept.

2= -3(4)+b

2= -12+b

b=14

Finally, put in everything we've found to finish the equation.

y= -3x+14

5 0

2 years ago

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A satellite dish has cross-sections shaped like parabolas. The receiver is located 13 inches from the base along the axis of sym

horsena [70]

Answer:

Depth = 3.3 inches

Step-by-step explanation:

Given that the shape of the satellite looks like a parabola

The equation of parabola is given as follows

$x^2=4\times a\times y$

Where

a= 13

Therefore

$x^2=4\times 13\times y$

$x^2=52\times y$

Lets take (13 , y) is a

Now by putting the values in the above equation we get

$13^2=52\times y$

$y=\dfrac{13^2}{52}=3.25$

y=3.25 in

Therefore the depth of the satellite at the nearest integer will be 3.3 inches.

Depth = 3.3 inches

7 0

2 years ago

I know how to do this but I just want to spend some points :)

Lunna [17]

Answer:

domain: all real numbers

range: y<-2

Step-by-step explanation:

I think its correct but already know the answer sooo yea

7 0

3 years ago