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3 years ago

Solving quadratic equation using the completing the square (a).9k²+5k=2

Mathematics

2 answers:

cricket20 [7]3 years ago

8 0

Answer:

See image below for answer:)

Step-by-step explanation:

FYI you can use the app photo math, you just take a pic of the problem and it gives you the answer and explains the steps and it is free.

Oxana [17]3 years ago

4 0

Step-by-step explanation:

everything can be found in the picture

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liraira [26]

Answer:

Step-by-step explanation:

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2 years ago

#if a sum become rs 6480 in 3 years and rs 7776 in 4 years interest being compounded annually, find the sum and rate of interest

Andrei [34K]

Answer:

The rate of interest is 20% and the sum is $3,750

Step-by-step explanation:

In order to calculate the sum and rate of interest we would have to make the following calculation:

rate of interest= (sum in 4 years-sum in 3 years)*100/sum in 3 years*1

According to the given data we have the following:

sum in 4 years=$7,776

sum in 3 years=$6,480

Therefore, sum in 4 years-sum in 3 years=$7,776-$6,480=$1,296

Therefore, rate of interest=$1,296*100/$6,480*1

rate of interest=20%

To calculate the sum we would have to make the following calculation:

FV=PV(1+20%)∧3

$6,480=PV(1,20)∧3

PV=$3,750

Sum is $3,750

8 0

3 years ago

Round the following problems to the nearest ten.

tatyana61 [14]

20,20,50,40,80,70.......

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3 years ago

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babunello [35]

Answer:

The answer is A

Step-by-step explanation:

I just took the test and it was the answer!

4 0

3 years ago

Which of these points are on a line that has a slope of -3?

Ira Lisetskai [31]

Simple....

using the formula $\frac{ y_{1}- y_{2} }{ x_{1}- x_{2} }$ to find slope....

1.) (9,2)(4,3)

$\frac{2-3}{9-4}= -\frac{1}{5}$ (No)

2.) (9,2)(3,4)

$\frac{2-4}{9-3} = -\frac{2}{6} =- \frac{1}{3}$ (No)

3.) (2,9)(3,4)

$\frac{9-4}{2-3} = \frac{5}{-1} =-5$ (No)

4.) (2,9)(4,3)

$\frac{9-3}{2-4} = \frac{6}{-2} =-3$ (YES!)

Thus, your answer.

3 0

3 years ago

Solving quadratic equation using the completing the square (a).9k²+5k=2​

Solving quadratic equation using the completing the square (a).9k²+5k=2