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Delicious77 [7]
3 years ago
12

Solve for x 6x^2 +7x=20

Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
6 0

Answer:

x=4/3    ,   x=-5/2

Step-by-step explanation:

6x^2 +7x=20

6x^2+7x-20=0

(3x−4)(2x+5)

3x-4=0 ,   2x+5=0

3x=4     ,   2x=-5

x=4/3    ,   x=-5/2

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Paul [167]

Answer:

A) Amount in the account after 3 years = $ 7, 883.14

B)  Interest earned = $ 883.14

Step-by-step explanation:

The formula to be used is given as

A = P ( 1 + r/n)^nt

A = final amount

P = initial principal balance

r = interest rate

n = number of times interest applied per time period

t = number of time periods elapsed

In the question we are given the following values :

A = final amount = Unknown

P = initial principal balance = $7,000

r = interest rate = 4% = 0.04

n = number of times interest applied per time period = semi annually , n= 2

t = number of time periods elapsed = 3 years

A) Find how much money there will be in the account after the given number of years.

A = P ( 1 + r/n)^nt

A = $7,000 (1 + 0.04/2)²×³

A = $7,000( 1+ 0.04/2)⁶

A = $7,000( 1.02)⁶

A = $ 7,883.14

The amount in the account after 3 years = $ 7,883.14

B. Find the interest earned.

To find the interest earned, we use the formula

A = P + I where

P (principal) = $ 7,000.00

A (Amount after 3 years) = $ 7,883.14

I = A - P

I = $ 7,883.14 - $ 7,000.00

I =$ 883.14

The interest earned = $ 883.14

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2 years ago
If the measure of angle ACB is 65 degrees, find the measure of angle BCD
jolli1 [7]

Answer:

the answer is 25

Step-by-step explanation:

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hope this helped!

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3 years ago
According to Ms. Hill’s blintz recipe, 2 eggs should be used for every 3/4 cup of sifted flour. At this rate, how many cups of s
IRISSAK [1]

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Step-by-step explanation:

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3 years ago
Mr. Au went to eat at McDonald's this week. On Monday, he ate some hamburgers. On Tuesday, he ate nothing at McDonald's. On Wedn
rewona [7]

Answer: See explanation

Step-by-step explanation:

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Monday = x

Tuesday = 0

Wednesday = x + 4

Thursday = 0

Friday = 3(x + 4)

Total hamburgers ate = 26

To find the amount of hamburger ate each day we add the number of hamburger ate per day all together. This will be:

= x + 0 + x + 4 + 0 + 3(x+4) = 26

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5x = 26 - 16

5x = 10

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x = 2

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Tuesday = 0

Wednesday = x + 4 = 2 + 4 = 6 hamburgers

Thursday = 0

Friday = 3(x + 4) = 3(2 + 4) = 18 hamburgers

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3 years ago
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