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siniylev [52]
3 years ago
12

What are the 4 different ways you can solve a quadratic equation.

Mathematics
1 answer:
mars1129 [50]3 years ago
5 0

Answer:

by \: using \: completing \: the \: square \: method \\ by \: using \: quadratic \: formula \:  \:  - b \:  plus \: or \: minus \frac{ \sqrt{ {b}^{2} - 4ac } }{2a}  \\ by \: factorizing \:  \\ this \: it \:  the \: only \: one \: i \: know \:

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Help me plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
victus00 [196]

Answer:

for the second space add a zero then multiply 5x5 and 5x2 add that and move the decimal 2 places to the left its infront of your addition answer.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
An equilateral triangle has a height of 32. Find the length of the sides of the triangle. Round to the nearest hundredth.
telo118 [61]
Let each side=x
Use pythagorus
As height at mid of other side
Then: 32=sqrt(X^2-X^2/4)
Therefore X=36.950
5 0
2 years ago
The seventh grade wants to break last year’s record of 78 coats collected for the annual clothing drive. They have already colle
Dimas [21]

Answer:

c + 13c ≥ 78c

78c - 13c =

65c

8 0
2 years ago
Tom knows that in his school 10 out of every 80 students are left-handed. There are 384 students in toms school. How many studen
Vika [28.1K]
Answer:

C (48)

explanation:

firstly, divide 384 by 80. This gives you 4.8. So, since 10 out of every 80 students are left handed we have to times 4.8 by 10 which gives you 48.
4 0
3 years ago
Dr. Blumen invested $5,000 part of it was invested in bonds at a rate of 6% in the rest was invested in a money market at the ra
abruzzese [7]
So... let's say the amounts invested were "a" at 6% and "b" at 7.5%.

ok.. hmm what's 6% of a? well, (6/100) * a or 0.06a.
what's 7.5% of b? well, (7.5/100) * b or 0.075b.

now... we know, whatever "a" and "b" are, they total the investment of 5000 bucks, thus a + b = 5000

and the interest yielded was 337.50, thus 0.06a + 0.075b = 337.50

thus    \bf \begin{cases}
a+b=5000\implies \boxed{b}=5000-a\\
0.06a+0.075b=337.50\\
----------\\
0.06a+0.075\left( \boxed{5000-a} \right)=337.50
\end{cases}

solve for "a", to see how much was invested at 6%.

what about "b"?  well, b = 5000 - a.
6 0
3 years ago
Read 2 more answers
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