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Luda [366]
3 years ago
12

Can you explain it and help me out please​

Mathematics
2 answers:
GREYUIT [131]3 years ago
8 0
The answer would be c on this
Anarel [89]3 years ago
6 0

Answer:

c.

Step-by-step explanation:

2x² - 4x - 3 = 0

x= \frac{-b+/-\sqrt{b^{2}-4ac} }{2a} \\\\x= \frac{-(-4)+/-\sqrt{(-4)^{2}-4*2*(-3)} }{2*2} \\\\x= \frac{4+/-\sqrt{16+24} }{4} \\\\x= \frac{4+/-\sqrt{40} }{4} = \frac{4+/-2\sqrt{10} }{4}=\frac{2+/-\sqrt{10} }{2}

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Write the ratio as a fraction in simplest form without any units 14 days to 5 weeks
Flauer [41]

35:14 in # of days

or

5:2 in #of weeks

5 0
3 years ago
Four shovels of sand are used for every 5 shovels of gravel in making cement. how many shovels of gravel are needed for 64 shove
Ivanshal [37]
<span>For the answer to the question above,
4 shovels of sand are used for every 5 shovels of gravel 
4s : 5g 

How many shovels of gravel are needed for 64 shovels of sand?
64s : Xg 

We need to calculate the value of X
4s : 5g

</span><span>64s : Xg 

4s.Xg = 5g.64s
X = (5g*64s)/4sg 

= 5*64/4
= 5*16
= 80 
80 shovels of gravel are needed.</span>
7 0
3 years ago
Could someone help me solve this math problem, please? Thanks!
kap26 [50]
We can write the factored form of the equation because we know the roots are 3 and 5.
Therefore the factored form is (x-3)(x-5) Remember it is -3 and -5 because of the Zero Product Property.
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That simplifies to x^2-8x+15, which is choice B
6 0
3 years ago
Read 2 more answers
Dan jogs 4 miles in 36 minutes. At this rate, how long would it take him to jog 10 miles?
Nana76 [90]

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Step-by-step explanation:

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4 0
3 years ago
Which expression is not equivalent to 1/343
Dennis_Churaev [7]
I would say that c is not equal to 1/343
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4 years ago
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