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Amiraneli [1.4K]
3 years ago
13

Solve the quadratic equation. 2x2 + 35 = 17x

Mathematics
1 answer:
atroni [7]3 years ago
8 0
Get it to equal 0

minus 17x from both sides

2x²-17x+35=0

tricky part
get something like
(2x-a)(x-b)
we know the signs  are negative since the middle term is negative and last term is positive

so a and b are either 1 and 35 or 5 and 7

(2x-1)(x-35), nope
(2x-35)(x-1) nope
(2x-5)(x-7), nope
(2x-7)(x-5), yep

(2x-7)(x-5)=0
set to zero
2x-7=0
2x=7
x=7/2

x-5=0
x=5


x=7/2 and 5
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Janet invested $10,000, part at 2% and part at 12%. if the total interest at the end of the year is $600, how much did she inves
Ivan

Janet invested $6000 at 2 %.

Let <em>x</em> = amount invested at 2 %. Then 10 000 - <em>x</em> = amount invested at 12 %

interest at 2 % + interest at 12 % = 600

0.02<em>x</em> + 0.12(10 000 –<em> x</em>) = 600

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3 0
3 years ago
Write an equation perpendicular to y = 3/4x that passes through the point(3,-3)
ryzh [129]

Step-by-step explanation:

the slope perpendicular to y= ¾x is

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so the equation :

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5 0
3 years ago
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vitfil [10]

Answer:

31

Step-by-step explanation:

7x4+3

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3 years ago
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