Help me with that please

Answers

Answer 1

Answer: About $5.26 will be deducted from $50

So he will get $44.74

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HElp me with this one but not with a big processs justa little one 8. Think of another quadratic equation that has two (2) real number solutions. Write the
equation in ax^2 + bx + c = 0 form. Then find the value of the discriminant to support your
answer.
9. Think of another quadratic equation that has one (1) real number solution. Write the
equation in ax^2 + bx + c = 0 form. Then find the value of the discriminant to support your
answer.
10. Think of another quadratic equation that has no (0) real number solutions. Write the
equation in ax^2 + bx + c = 0 form. Then find the value of the discriminant to support your
answer.

Answers

so 2 real solutions
just write 2 factors and expand
(x-3)(x-4)=0
x^2-7x+12=0
discriminant is when you have b^2-4ac
so subsitute
ax^2+bx+c=0
a=1
b=-7
c=12
-7^2-4(1)(12)
49-48=1
discriminant=1

one real solution would be
(x-1)(x-1)=0
x^2-2x+1=0
discriminant=-2^2-4(1)(1)=4-4=0
discriminant=0

no real solutions has the discriminant less than zero
let's say that b=1 and c=20 and a=1
basically, we need a set of numbers where b^2 is less than 4acso

1^2-4(1)(20)=1-80=-79
then we subsitute
x^2+x+20=0

Measures of center questions, please help.

Answers

1. The mode is C. 18
2. The median is B. 16
3. The mean is D. 14.25
4. The median is 2.3
5. The mean is 18

1) the mode is the number that repeats the most in a given set of numbers, so the answer would be c, 18
2) the median is b, 16 (if you put the numbers in chronological order, there are two middle numbers, to get the median you have to average those two numbers)
3) the mean is d, 14.25 (add all the numbers up and divide by the amount of numbers that you have [if you have 5 numbers, you divide by 5])
4) the median is 2.3
5) the mean is 18
hope this helps!

on call 3.5 hour $10 talk time 1/2 hour $1.25 what is the unit rate in dollar per hour for each company

Answers

48. On call = 3.5 hours for 10 dollars=> ½ hour for 1.25 dollars.Now, let’s solve the unit rate for each companyfirst = 3.5 hour / 10 dollars=> 10 / 3.5=> Unit rate is 2.9 dollars/hrSecond company = ½ hour for 1.25 dollars=> 1.25 / .5=> 0.25 dollars / hr.Thus, the first company pays better than the second one because it pays 2.9 dollars every hour of talk compare to the 2nd one which pays only 0.25 dollars per hr.

In the soccer games so far this season, Letty has had 15 goals in 20 attempts at a goal. What is the probability, expressed as a percent, that she will get a goal the next time she tries for one?A) 15%
B) 20%
C) 60%
D) 75%

Answers

20 is 1/5 of 100 so do 20x5=100 and 15x5=75

So there is a 75% chance she will make the goal

The answer would be D because 20 divided by 4 is 5 and 5 times 3 is 15 so 100 divided by 4 would be 25 and then that times 3 equals 75.

An aquarium is on sale for 59.50 & price represents 15% discount of original price, what is original price

Answers

59.50 x .15 = 8.93
59.50 + 8.93 = 68.43

Can you help me with number 12 ,13,14,and 15

Answers

12. 5 T>5,000lb 13. 18000lb=5T 14. 25lb>350oz 15. 27oz>2lb

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