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3 years ago

Find the discriminant for this equation. x2 + 3x + 1 = 0

Mathematics

1 answer:

kirill [66]3 years ago

5 0

Answer:

Step-by-step explanation:

if ax^2 +bx + c ====>discriminant formula is b^2 - 4ac from the quadratic formula

x2 + 3x + 1 = 0

Then;

a=1

b=3

c=1

b^2 - 4ac = 3^2 -4*1*1

= 9-4

= 5

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Urgent Please Help!!

Alenkinab [10]

I believe it’s X = 4

So 4 would be the answer

5 0

3 years ago

The first term of a geometric sequence is 32, and the 5th term of the sequence is 818 .

sammy [17]

Answer:

$32,24,18,\frac{27}{2} ,\frac{81}{8}$

Step-by-step explanation:

Let x, y , and z be the numbers.

Then the geometric sequence is $32,x,y,z,\frac{81}{8}$

Recall that term of a geometric sequence are generally in the form:

$a,ar,ar^2,ar^3,ar^4$

This implies that:

a=32 and $ar^4=\frac{81}{8}$

Substitute a=32 and solve for r.

$32r^3=\frac{81}{8}$

$r^4=\frac{81}{256}$

Take the fourth root to get:

$r=\sqrt[4]{\frac{81}{256} }$

$r=\frac{3}{4}$

Therefore $x=32*\frac{3}{4} =24$

$y=24*\frac{3}{4} =18$

$z=18*\frac{3}{4} =\frac{27}{2}$

8 0

3 years ago

Make x the subject of the formula 6x+a=5

Tatiana [17]

You would -a to get 6x=5-a then divide by 6 which you would get your final answer which is x=5-a/6

7 0

3 years ago

What is 2and 2/3 divided by 4/5

MArishka [77]

The answer is about 3.3333

4 0

4 years ago

Read 2 more answers

Does the mixed number 4 3/4 make each equation true? Choose Yes or No for each equation.

zhuklara [117]

Answer:

first one: yes

second one: yes

third one: no

fourth one: yes

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers