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galben [10]
3 years ago
14

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

Mathematics
1 answer:
Margarita [4]3 years ago
6 0

Answer:

,

Step-by-step explanation:

everything can be found in the picture

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Jada typically earns$1545 each month, of which $47.20 is spent on electricity. Whick percent of jadas earnings are spent on elec
REY [17]
The equation is asking how much out of Jada's total budget (1545) is spent on electricity a month (47.20).
write this as a fraction 47.20/1545
type into calculator and you get .03055
multiply that by 100 to get it as a percent. you get 3.055%
now round that to the nearest tenth and you get 3.1%
answer 3.1%

8 0
3 years ago
2. Let f(x) = 3x² -x+5, find f(x+1)​
Anna11 [10]

Answer:

f(x + 1) = 3x² + 5x + 7

Step-by-step explanation:

To find f(x + 1), substitute x = x + 1 into f(x), that is

f(x + 1) = 3(x + 1)² - (x + 1) + 5 ← expand (x + 1)² using FOIL

           = 3(x² + 2x + 1) - x - 1 + 5 ← distribute parenthesis by 3

           = 3x² + 6x + 3 - x - 1 + 5 ← collect like terms

           = 3x² + 5x + 7

8 0
3 years ago
48
Black_prince [1.1K]
Well first count the shoe rental which is 4 dollars so she has 16 dollars left. We divide 16 and 5.50 and get 2.9090 meaning that she can play 2 games. Because u can’t pay for half the game so it would be 2 games.
8 0
3 years ago
The football team has a total of 50 jerseys.There are 15 ​medium-sized jerseys. What percent of the jerseys are​ medium-sized je
ladessa [460]
All you have to do is divide the medium sized jerseys by the total number of jerseys and multiply by 100. 

15/50*100=30%


8 0
4 years ago
Read 2 more answers
As an estimation we are told 5 miles is 8 km.<br>Convert 100 km to miles​
dimulka [17.4K]

Answer: 100km = 62.5 miles.

Step-by -step explanation: given 5miles = 8km. now, 5miles — 8km. X miles — 100km. now do cross multiplication.

4 0
3 years ago
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