3 years ago

Help Please 2(-1+-4)-d^2

1 answer:

laiz [17]3 years ago

8 0

−d^2 + 7
Hope this helps !

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katrin2010 [14]

Answer:

Step-by-step explanation:

20 x 10 = 200 so 20 students sleep for 9 hours

that leaves 10

since 10 is half of 20, half of 2 is 1 so that last 10 = 1 student,

making 21 students

6 0

3 years ago

xeze [42]

Chicken Chicken chicken

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2 years ago

bearhunter [10]

The answer is C that is X=7 and X=-1

multiple x through the given equation to get rid of a fraction. It will be

${x}^{2} - 7 = 6x$

After that bring 6X to the LHS of the equation

so that it will look like the general equation that is

${x}^{2} - 6x - 7 = 0$

Use the quadratic formula (or any other approach to find the values of x

You will arrive at

$x = 7. - 1$

3 0

3 years ago

dedylja [7]

The expression would be (5*6)+(5*6)=x
or you could shorten it and do (10*6)=x

8 0

3 years ago

valentinak56 [21]

$(a,b)=\{x|a\ \textless \ x\ \textless \ b\}$

In our case:

$(49,\infty) \Rightarrow 49\ \textless \ x$

3 0

3 years ago