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vivado [14]
4 years ago
9

PLZZZZ HELP ME ASAP!!!!!

Mathematics
2 answers:
il63 [147K]4 years ago
8 0

<u>Answer</u>

18

_____________________________________________________

<u>Detailed explanation</u>

82^{2} = 6724

80^{2} = 6400


We would simply need to subtract the numbers above.


6724-6400= 324


Now, we would need to square root 324.

\sqrt{324}=18


Hence, that is how 18 would be the answer.

Nadusha1986 [10]4 years ago
4 0
82^2= 80^2+ x^2

x^2= 6724-6400
x^2=324
x=18

so option 1 is correct
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An investor bought 600 shares of stock, some at $5.00 per share and some at $4.75 per share. If the total cost was $2912.50, how
yuradex [85]
Let x= $4.75 shares 600-x- $5.00 shares 4.75x + 5 (600-x)= 2912.50 distribute and remove ( ) 4.75x +3000-5x= 2912.50 combine like terms -,25x + 3000= 2912.50 subtract 3000 from both sides -.25x= -87.5 divide by -.25 x=350 shares @ $4.75 600-350= 250 shares @ $5,00 hope this helps
3 0
3 years ago
Find the explicit formula for a 1 =-4,a n =a n-1 +9,n&gt;=2
Mrrafil [7]

Given:

a_1=-4 and a_n=a_{n-1}+9 where n\geq 2.

To find:

The explicit formula for the given recursive formula.

Solution:

We know that recursive formula of an AP is:

a_n=a_{n-1}+d

Where, d is the common difference.

We have,

a_n=a_{n-1}+9

Here, d=9.

The first term of the AP is a_1=-4.

The explicit formula for an AP is:

a_n=a_1+(n-1)d

Substituting a_1=-4 and d=9, we get

a_n=-4+(n-1)9

a_n=-4+9n-9

a_n=-13+9n

Therefore, the required explicit formula for the given sequence is a_n=-13+9n.

6 0
3 years ago
Don’t know how to solve.
iVinArrow [24]

Answer:

$122.88

Step-by-step explanation:

the phone decreases by 20% each year , that is

(100 - 20)% = 80% = \frac{80}{100} = 0.8

the phone reduces by a factor of 0.8 each year , then after 4 years

value = $300 × (0.8)^{4} = $122.88

3 0
2 years ago
Which expression has a value of StartFraction 1 Over 36 EndFraction? (StartFraction 1 Over 108 EndFraction) cubed (StartFraction
IrinaVladis [17]

Answer:

(1/6)^2

Step-by-step explanation:

We want to find the fraction that is equivalent to 1/36.

Let us look at each of them individually:

a. (\frac{1}{108})^3 = \frac{1}{1259712}

b. (\frac{1}{9})^4 =  \frac{1}{6561}

c. (\frac{1}{6})^2 =  \frac{1}{36}

d. (\frac{1}{5})^2 = \frac{1}{25}

Therefore, the correct answer is c.

4 0
3 years ago
Read 2 more answers
Identify whether the following equation has a unique solution, no solution, or infinitely many solutions.
lidiya [134]

Answer:

No solution

Step-by-step explanation:

3+6=9

3-4=-1

9 doesn't equal -1 therefore no solution.

3 0
3 years ago
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