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solmaris [256]
3 years ago
6

X(15-x)=50 quadratic equations

Mathematics
1 answer:
meriva3 years ago
3 0

Answer:

15x -  {x}^{2}  =50 \\  {x }^{2}  - 15x  + 50 = 0 \\  {x}^{2} - 10x - 5x + 50 = 0 \\ x(x - 10) - 2(x - 10) = 0 \\ (x - 2)(x - 10) = 0 \\ x = 2 \: and \: x = 10

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During a four-week period, you worked the following hours: Week 1- 363 /8 hr; Week 2- 411 /4 hr; Week 3- 401 /2 hr; Week 4- 383
Dafna11 [192]
The average number of hours can be calculated using the following rule:
average number of hours = total number of hours / total number of weeks

total number of hours = 36 3/8 + 41 1/4 + 40 1/2 + 38 3/8 = 313/2 hours
total number of weeks = 4 weeks

Average number of hours per week = (313/2) / (4) = 39 1/8 hour

Based on the above calculations, the correct answer is:
C. 39 1/8 hour
4 0
3 years ago
7..4745 x 10 to the 10th power
Ludmilka [50]

Answer:

74,745,000,000

Step-by-step explanation:

First, you take the power and you move the decimal point over that man places:

7.4745 x 10 to the 10th power

Decimal point moves over 10 places to the right

= 74745,000,000

If the power was negative, you would move it left

Hope this helps!

Plz name brainliest if possible!

8 0
4 years ago
An item is regularly priced at $94. It is now priced at a discount of 30% off the regular price.
Vedmedyk [2.9K]
30% off an item would make that item valued at 70% of its original price

94 times 0.7 = 65.8

$65.80
4 0
3 years ago
Read 2 more answers
ava pours 3 gallons of paint equally into 5 cans. how many gallon of paint will there be in each can?​
IrinaK [193]

Answer:

15 gallons of paint

Step-by-step explanation:

5 x 3 = 15

equal groups !

6 0
3 years ago
PLEASE HELP! Explain your answer, THANK YOU!
Misha Larkins [42]

Answer:

-2/-3

Step-by-step explanation:

(75, 60) (45, 40)

75       60               since 75 is larger than 45, we subtract = -30

45       40               since 60 is larger than 40, we subtract = -20

= -20/-30

reduce

= -2/-3

3 0
4 years ago
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