3 years ago

Solve using the quadratic formula.

1 answer:

3 0

Answer:

This is not really an answer but if you photomath and type in the problem for example “9x^2+x-9=0” you’ll be able to find your answer easily

Step-by-step explanation:

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Evaluate 6 + x + 3y when x = 15 and y = 2

Anarel [89]

Answer:

the anwser is 27

Step-by-step explanation:

glad I could help!

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A class voted for either rollerblading, swimming or biking as their favorite summer activity. If rollerblading got 10% percent o

weeeeeb [17]

The answer would be 55%

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3 years ago

Arithmetic and geometric series -Find the sum of the first 50 terms of the following series, to the nearest integer.

grandymaker [24]

Answer:

Step-by-step explanation:

21-13=8 and 29-21=8

So this is aritmetic series where a₁ = 13, and r = 8

Sum of the first n terms:

$S_n=\dfrac{a_1+a_n}{2}\cdot n=\dfrac{a_1+a_1+(n-1)r}{2}\cdot n=\dfrac{2a_1+(n-1)r}{2}\cdot n\\\\\\S_{50}=\dfrac{2\cdot13+(50-1)\cdot8}{2}\cdot50=(13+49\cdot4)\cdot 50=10,450$

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3 years ago

Please help and explain

Sonja [21]

Find out how much over the 10 years whatever it says and then use that to explain if it's worth is

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3 years ago

Find the interest rate if £6400 has a final value of £8334 in 3 years. Give your answer to 1 d.p

Mila [183]

Answer:

Step-by-step explanation:

6400(1+i)³=8334

(1+i)³=1.3021875

∛(1+i)³=∛(1.3021875)

1+i= 1.092

i= .092

I guess if you were to round to 1 decimal point it'd be .1

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2 years ago