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Leto [7]
2 years ago
12

3. A root of x2 – 5x – 1 = 0 is

Mathematics
1 answer:
kirill [66]2 years ago
3 0
Try using photomath, the app. you take a photo of the equation and it shows you the steps to solve it
You might be interested in
What number comes after 12 24 72 to 288
BARSIC [14]
What number comes after 12 24 72 to 288 first please explain that again and second 11 comes after 12 and 23 comes after 24 and 71 comes after 72 hope this helps
8 0
3 years ago
Does anyone know how to do this who can pls explain it to me?
Elza [17]

Answer:

The unit rate is $8.89 /ft².

Step-by-step explanation:

Given:

$160 for 18ft².

So, by dividing with 18

\frac{160}{18} we get 8.888.

Now, round to nearest hundredth for $8.888 is $8.89.

Therefore, the unit rate is $8.89 /ft².

7 0
3 years ago
You have $500 in a savings account. How long will it take to double that
kondor19780726 [428]

Answer:

Step-by-step explanation:

The formula for compound annual interest is  A = P(1 + r)t  where  

A = Accumulated or final amount  (double $500 = $1000)  

P = Principal or original amount  ($500)  

r = Rate as a decimal (0.08)

t = Time in years  

1000 = 500(1 + 0.08)t

2 = 1.08t  

Take the logarithm of both sides.  I prefer the natural logarithm ln, but if you're more comfortable with base 10 logs they will work just as well  

ln(2) = ln(1.08t)  

ln(2) = t*ln(1.08)

t = ln(2)/ln(1.08)

t = 9.0065 years  

Check:  500*1.089.0065 = $1000

4 0
2 years ago
If the price of a cd that normally costs $17.50 was marked up by 8% what is the new cost
Nana76 [90]
CD cost=17.50
Marked up=8%
So 8%of 17.50
8÷100×17.50=1.4
So add the old cd cost to the answer
=17.50+1.4=18.9 is the new cost
3 0
3 years ago
Represent the following expressions as the power of a number a.<br> 1/a^2 · 1/a^3
wolverine [178]

Answer:

a⁻⁵

Step-by-step explanation:

1/a²·1/a³

Multiply numerators and denominators

= (1 × 1)/(a² × a³)

= 1/a⁵

= a⁻⁵

4 0
3 years ago
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