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joja [24]
3 years ago
14

The product of a + 3b and –a2 + 4ab + 2b is –a3 + xa2b + 2ab + 12ab2 + yb2. What are the values of x and y in the expression?

Mathematics
2 answers:
NeX [460]3 years ago
8 0

Answer:

X=1   y=6

hope this helps i just took the test!

Anuta_ua [19.1K]3 years ago
6 0
First, we multiply the given expressions:
(a + 3b) (-a² + 4ab + 2b)
= -a³ + 4a²b + 2ab - 3a²b + 12ab² + 6b²
Simplifying:

-a³ + a²b + 2ab + 12ab² + 6b²

By comparison, we can determine the values of x and y, which work out to be:
x = 1
b = 6
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Recall the equation for a circle with center (h,k) and radius r. At what point in the first quadrant does the line with equation
IgorC [24]

Answer:

At intersection

x=2.68

y=5.34

Step-by-step explanation:

Equation of circle with center (h,k) and radius r is

(x-h)^{2}+(y-k)^{2}=r^2\\\\With\,\, center\,\,(0,4)\,\, and\,\, r=3\\\\(x-0)^{2}+(y-4)^{2}=3^2\\\\x^2+(y-4)^{2}=9---(1)\\\\Equation\,\,of intersecting\,\,line\\y=0.5x+4---(2)

To find point of intersection:

From (2)

x=\frac{y-4}{0.5}=2(y-4)\\\\x^2=4(y-4)^{2}\\\\Put\,\,in\,\,(1)\\\\4(y-4)^{2}+(y-4)^{2}=9\\\\5(y-4)^{2}=9\\\\y-4=\frac{3}{\sqrt{5}}\\\\y=1.34+4\\\\y=5.34\\\\x=2(5.34-4)\\\\x=2(0.34)\\\\x=2.68

At intersection

x=2.68

y=5.34

This point of intersection can be checked in graph attached below

3 0
3 years ago
Find the measure of x. Line PU has points R and S between points P and U, lines QR and ST are parallel, line QR intersects line
Genrish500 [490]

The value of x is 1.

* Let's explain how to solve the problem

- Line PU has points R and S between points P and U

- Line QR intersects line PU at point R

- Line ST intersects line PU at point S

- Lines QR and ST are parallel

- Look to the attached figure

∵ QR // ST

∴ m∠TSU = m∠QRU ⇒ corresponding angles

∵ m∠TSU = 15(x + 2)°

∴ m∠QRU = 15(x + 2)

∵ Points P, R, S lie on the same line

∵ RQ intersects PS at R

∵ m∠PRQ + m∠QRU = 180° ⇒ straight angle

∵ m∠PRQ = 135°

∵ m∠QRU = 15(x + 2)°

∴ 135 + 15(x + 2) = 180

∴ 135 + 15x + 30 = 180

- Add like terms

∴ 15x + 165 = 180

- Subtract 165 from both sides

∴ 15x = 15

- Divide both sides by 15

∴ x = 1

∴ The value of x is 1

In geometry, parallel lines are coplanar instantly traces that do not intersect at any factor. Parallel planes are planes in identical three-dimensional space that in no way meet. Parallel curves are curves that do not touch every different or intersect and hold a set minimal distance

In mathematics, the intersection of or more gadgets is any other item that includes the whole thing that is contained in all the items simultaneously.

Learn more about parallel lines here : brainly.com/question/24756209

#SPJ4

4 0
2 years ago
The hole for a support post needs to be 6 feet deep. it is currently 1 foot 8inches deep.How much deeper must the hole be? 12in/
Kazeer [188]

Answer:

52 inches more deep

Step-by-step explanation:

because she already has 20 inches and then she needs 72 inches so 20-72 gives 52


6 0
3 years ago
What is 2² x 5 ? Some help me please !
Naddika [18.5K]
The answer is 20 i’m pretty sure
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Y=0.27x constant of proportionality
Nutka1998 [239]

Answer:

0.02 gghgfvvvjkn ghjyfnj

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