2 years ago

Can someone pleaseeee help me with this?! I really need the help so hurry please!

Mathematics

1 answer:

Genrish500 [490]2 years ago

3 0

Answer:

idk im not very smart

Step-by-step explanation:

maybe if you go and talk to teacher they will help

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If two distinct lines intersect, which is NOT necessarily true?

Inessa05 [86]

The lines are perpendicular.

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3 years ago

Find the mean of 3,2,4,6,5,6,1,7,9,8,10

LenaWriter [7]

Answer:

$5\frac{6}{11}$

Step-by-step explanation:

Number of Values = 11.

Mean = Sum of values / Number of Values

= $\frac{3+2+4+6+5+6+1+7+9+8+10}{11} \\=\frac{61}{11} \\= 5\frac{6}{11}$

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2 years ago

Find the discriminant and the number of real roots for this equation.<br> x2 + 2x + 7 = 0

zavuch27 [327]

Answer:

Discriminant = -24

No real roots.

Step-by-step explanation:

x^2 + 2x + 7 = 0

The discriminant = b^2 - 4ac

= 2^2 - 4*1*7

= -24

So there are no real roots.

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2 years ago

How many solutions are there to the equation below?

Studentka2010 [4]

No solution

3x+5+4x=7x+9
7x+5=7x+9
-7x -7x

you’re left with no x.. so no solution

6 0

2 years ago

What is the difference? 4y+6/y-5 - 2y+1/y-5

nalin [4]

Answer:

$\frac{2y+5}{y-5}$

Step-by-step explanation:

Since both fractions have a common denominator then subtract the numerators leaving the denominator, that is

$\frac{4y+6-(2y+1)}{y-5}$

= $\frac{4y+6-2y-1}{y-5}$

= $\frac{2y+5}{y-5}$

6 0

3 years ago