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2 years ago

800plus 25 percent equals what

Mathematics

2 answers:

mart [117]2 years ago

7 0

1000
Hope it helped! Please mark Brainliest if correct :)

madreJ [45]2 years ago

4 0

825
just add them or use a cal

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What is the answer. PLEASE HELP ME. urgent PLEASE.

Liono4ka [1.6K]

I think 85 square inches

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2 years ago

Find a quadratic polynomial with integer coefficients which has x = 2/9, ± SQRT23/9 as its real zeros.

melomori [17]

Answer:

The quadratic polynomial with integer coefficients is $y = 81\cdot x^{2}-36\cdot x -19$ .

Step-by-step explanation:

Statement is incorrectly written. Correct form is described below:

Find a quadratic polynomial with integer coefficients which has the following real zeros: $x = \frac{2}{9}\pm \frac{\sqrt{23}}{9}$ .

Let be $r_{1} = \frac{2}{9}+\frac{\sqrt{23}}{9}$ and $r_{2} = \frac{2}{9}-\frac{\sqrt{23}}{9}$ roots of the quadratic function. By Algebra we know that:

$y = (x-r_{1})\cdot (x-r_{2}) = x^{2}-(r_{1}+r_{2})\cdot x +r_{1}\cdot r_{2}$ (1)

Then, the quadratic polynomial is:

$y = x^{2}-\frac{4}{9}\cdot x -\frac{19}{81}$

$y = 81\cdot x^{2}-36\cdot x -19$

The quadratic polynomial with integer coefficients is $y = 81\cdot x^{2}-36\cdot x -19$ .

5 0

2 years ago

I NEED HELP PLEASE! If you can help me with this you amazing! Thank you

krek1111 [17]

Answer:

$a=-3$

Step-by-step explanation:

we have

$a-2=\frac{3+6a}{3}$

Solve for a

That means ----> Isolate the variable a

Factor 3 in the numerator right side

$a-2=\frac{3(1+2a)}{3}$

Simplify right side

$a-2=1+2a$

subtract a both sides

$a-2-a=1+2a-a$

$-2=1+a$

subtract 1 both sides

$-2-1=1+a-1$

$-3=a$

Rewrite

$a=-3$

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2 years ago

If the sphere shown has a radius of 9 units, what is the volume of the sphere?

kirill [66]

V = 4/3 * 3.14 * 9^3 = 3052.08

Answer is B

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2 years ago

Factor the polynomial x(3x+5)-4(3x+5)

padilas [110]

x(3x+5)-4(3x+5)
3x^2+5x-12x+20
3x^2-7x+20

3 0

2 years ago

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