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RideAnS [48]
3 years ago
5

7x^2 - 21x Factor the Polynomial

Mathematics
1 answer:
Elza [17]3 years ago
4 0
Factor out 7x-
7x(x-3)
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Find all the points, if any, where the graph of 12x-5y=0 intersects (x+12)^2+(y-5)^2=169.
WITCHER [35]
I: 12x-5y=0
II:(x+12)^2+(y-5)^2=169

with I:
12x=5y
x=(5/12)y
-> substitute x in II:
((5/12)y+12)^2+(y-5)^2=169
(25/144)y^2+10y+144+y^2-10y+25=169
(25/144)y^2+y^2+10y-10y+144+25=169
(25/144)y^2+y^2+144+25=169
(25/144)y^2+y^2+169=169
(25/144)y^2+y^2=0
y^2=0
y=0

insert into I:
12x=0
x=0

-> only intersection is at (0,0) = option B
6 0
3 years ago
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Factor the polynomial-x^3-4x^2-5x
Gnom [1K]

Answer:

(-x)(x^2 + 4x + 5)

Step-by-step explanation:

You have to factor out the -x from the rest of the expression.

5 0
3 years ago
Help me with this please
svp [43]
3/2
I picked a point and counted up 3 and over 2 to the next point
8 0
3 years ago
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I NEED THIS ANSWER NOW! Determine which postulate or theorem can be used to prove that ABC DCB.
Archy [21]
Quick Answer SSS
Proof
AC = DB
AB = DC
BC = BC This side is equal to itself and is common to both triangles.

Three sides of one triangle equal to 3 sides of the other means that the triangles are congruent. It is the Theorem you need.
8 0
3 years ago
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At some department store, all suits are reduced 30% from the retail price. If a man purchased a suit that originally rera ec for
Arisa [49]

Answer:

$78.72

Step-by-step explanation:

To find 30% of the original value, we need to turn this percentage into a decimal or a fraction and then multiply it by the original value

  • 30% is equivalent to 0.30, \frac{30}{100}, and \frac{3}{10}
  • So we can use either of these values. I will use 0.30 for simplicity

  • ($262.40)(0.30) = $78.72 is the amount saved
5 0
3 years ago
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