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NeX [460]
4 years ago
7

Solve the following equation using the quadratic formula

Mathematics
1 answer:
Anarel [89]4 years ago
7 0

Answer:

A

Step-by-step explanation:

The quadratic formula is x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}. Here a=1, b=-8, and c=97.

Substitute and you'll have:

x=\frac{-b+/-\sqrt{b^2-4ac} }{2a} =\frac{8+/-\sqrt{-8^2-4(1)(97)} }{2(1)}=\frac{8+/-\sqrt{64-388} }{2)}

\frac{8+/-\sqrt{-324} }{2}=\frac{8+/-18i }{2}=4+/- 9i

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3. What is the scale factor of Figure B to Figure A?
xxMikexx [17]

Answer:

2.5

Step-by-step explanation:

From the diagram, figure B was enlarged to obtain figure A.

The two figures are therefore similar.

The corresponding sides are in the same proportion. That constant value of the proportion is called scale factor.

It is given by:

k =  \frac{image \: length}{corresponding\:object \: length}

Figure B is the image of A

k =  \frac{10}{4}  =  \frac{25}{10}  = \frac{21.5}{8.6} =   2.5

Therefore the scale factor is 2.5

4 0
3 years ago
WILL GIVE BRAINLIST AS SOON AS I CAN i thought that this one was 17157.3 but its not. i feel like im close, though.​
vladimir2022 [97]

Answer:

2143.6 ft³

Step-by-step explanation:

We use formula number 2 to get the volume. V=4\3πr³

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Rounded of to the nearest tenth = 2143.6 ft³

If you need any clarifications or more explanation pls do mention at the comment section.

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4 0
3 years ago
A grocery store sells a 6-pack of bottled water for $3.79 and a 12-pack of water for $6.89.
Ivenika [448]
It will be  26.1131 per bottle hopes this helps :)
7 0
4 years ago
2x + y = −3 −2y = 6 + 4x Write each equation in slope-intercept form.
Zanzabum

slope intercept form is y=mx+b

so solve for y


2x+y=-3

minus 2x both sides

y=-2x-3


-2y=6+4x

divide both sides by -2

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6 0
3 years ago
The proper sequence to use in solving 3x - 2 = 60 is:
IrinaVladis [17]
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