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Veseljchak [2.6K]

4 years ago

11

How many answers are in each of these three questions: 1. x squared minus three x plus four equals zero 2. Two x squared plus fo

ur x minus five equals zero 3. X squared plus eight x plus sixteen equals zero

1 answer:

vaieri [72.5K]4 years ago

6 0

1. No solutions ( no answers) 2 . 2 answers 3. 1 answer

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Somebody please help meeeee pt.2

rosijanka [135]

Answer:

See explanation

Step-by-step explanation:

Consider the sequence 10, 6, 2, -2, -4, ...

Rewrite it as

$a_1=10,\\ \\a_2=6,\\ \\a_3=2,\\ \\a_4=-2,\\ \\a_5=-6,...$

The points on the coordinate plane are

$(1,a_1),\ (2,a_2),\ (3,a_3),\ (4,a_4),\ (5,a_5),...$ (see attached graph).

Since

$4=a_2-a_1=a_3-a_2=a_4-a_3=a_5-a_4=...,$ given sequence is arithmetic.

8 0

3 years ago

Does the relation {(-5, -3), (7,2), (3,8), (3, -8)} represent a function. Use the arrow digram. Then explain your answer.

Maslowich

No it is not a function

4 0

3 years ago

Please hurry I will mark you brainliest <br> Find the surface area

erastova [34]

Triangle area = 8 x 3/2

= 12

12 x 2 = 24cm^2 for 2 triangles

Height of rectangle must be found, so use pythag on triangle

a^2+ b^2 = c^2

16 + 9 =c^2

C=5

A= 5 x 12

= 60

60 x 3 triangles in total is 180cm^2

180cm^2 + 24cm^2 = 204cm^2

Ans: 204cm^2

4 0

3 years ago

Mary has five-eighths of the total of pencils her and her sister own. Together, they have 96 pencils. How many pencils does Mary

olga55 [171]

60 pencils. It’s a ratio. 60/96 can be simplified down to 5/8

5 0

3 years ago

Find the length of a leg

N76 [4]

The answer to your question is b.

8 0

4 years ago

Read 2 more answers