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zaharov [31]
4 years ago
5

What is the first step in solving the quadratic equationx

Mathematics
1 answer:
ch4aika [34]4 years ago
3 0

B. adding 40 to both sides of the equation

x^2 - 40 = 0

x^2 = 40

x = ± √40

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last year Patrick paid £2534 for his annual train ticket this year he has to pay £2612 for his annual train ticket. work out the
Aleonysh [2.5K]

Answer:

Percentage increase in the cost of his train ticket = 3% (Approx.)

Step-by-step explanation:

Given:

Cost of annual ticket paid by Patrick last year = £2,534

Cost of annual ticket paid by Patrick current year = £2,612

Find:

Percentage increase in the cost of his train ticket

Computation:

Percentage increase = [(Current - Base) / Base]100

Percentage increase in the cost of his train ticket = [(2,612 - 2,534) / 2,534]100

Percentage increase in the cost of his train ticket = [(78) / 2,534]100

Percentage increase in the cost of his train ticket = [0.03078]100

Percentage increase in the cost of his train ticket = 3.078

Percentage increase in the cost of his train ticket = 3% (Approx.)

3 0
3 years ago
if the working age population is 250 million,170 million are unemployed and 9 million are unemployed, the unemployment rate is
Amiraneli [1.4K]

Answer: 5%

Step-by-step explanation:

9/179

4 0
3 years ago
7% interest on a loan of $800 for a year. how much will you receive?
alisha [4.7K]

Answer:

$56

Step-by-step explanation:

Here's an easy way to figure out this and any percentage question. One per cent (1 dollar out of $100) of $800 would be $8. So, if the man received 7 per cent out of $800, then just multiply $8 times 7, which is 56...so $56!

Hope it helps

Please mark me as the brainliest

Thank you

4 0
3 years ago
Read 2 more answers
A quarterback throws a football 40 yards in 4 seconds what is the average speed of the football?
hram777 [196]
S=d/t

s=40/4

s=10

Therefore the average speed of the football is 10yd/s!
6 0
3 years ago
Read 2 more answers
How many different sums can be made with 3 numbers?
Tanzania [10]
1 sum

because of the commutative property of addition
a+b=b+a
we can furthuer expand it

a+b+c=a+c+b=b+a+c=b+c+a=c+b+a=c+a+b

same sum
you can test it with numbers
4 0
3 years ago
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