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2 years ago

6

Pretty please can someone help

1 answer:

Alenkasestr [34]2 years ago

3 0

Answer:

Step-by-step explanation:

$2x^{2} + x - 4 = 0\\$

divide by 2 throughout

$x^{2} + \frac{x}{2} = \frac{4}{2}$

$x^{2} +2 * \frac{x}{4} +( \frac{1}{4}) ^{2} = 2 + ( \frac{1}{4}) ^{2}\\$

$(x+\frac{1}{4} ^{2} ) = 2 + (\frac{1}{4} )^{2} \\$

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The half-life of a drug is 4 hours. A patient has been taking the drug on a regular basis for a few months and then discontinues

brilliants [131]

Answer:

Step-by-step explanation:

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2 years ago

ASAP PLZZZ The axis of symmetry for the graph of the function f start bracket x end bracket equals one-quarter x square plus b x

Lilit [14]

Answer:

$b=-3$

Step-by-step explanation:

The given function is $f(x)=\frac{1}{4}x^2+bx+10$ .

When we compare to $ax^2+bx+=0$ , we have

$a=\frac{1}{4}$ and c=10

The equation of the axis of symmetry of a vertical parabola is:

$x=-\frac{b}{2a}$

Also from the question the axis of symmetry is x=6

We substitute the values to get:

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7 0

2 years ago

Read 2 more answers

Nutka1998 [239]

Answer: Picking the first option and constantly adding on and on you will eventually make way more than what the second option proposes, therefore picking the first option is the obvious choice.

Step-by-step explanation:

Well let’s see it starts off slow for instance 1, 2, 4, 8, 16 and so on adding that on for a month will eventually leave you with more.

4 0

2 years ago

Please solve find perimeter

babunello [35]

Answer:

12???

Step-by-step explanation:

5 0

2 years ago

The perimeter of a rectangular metal plate is 15 cm. Find the length of the rectangular plate (in decimals) whose width is 228 c

scoray [572]

The Solution.

Representing the problem in a diagram, we have

By formula,

$P=2(L+W)$

In this case,

$P=15\operatorname{cm},L=?,W=\frac{22}{8}cm$

Substituting these values in the formula above, we get

$15=2(L+\frac{22}{8})$

Clearing the bracket, we get

$15=2L+(2\times\frac{22}{8})$ $\begin{gathered} 15=2L+\frac{11}{2} \\ \\ 15=2L+5.5 \end{gathered}$ $\begin{gathered} 15-5.5=2L \\ 9.5=2L \end{gathered}$

Dividing both sides by 2, we get

$L=\frac{9.5}{2}=4.75\approx4.8\operatorname{cm}$

Therefore, the correct answer is option C.

6 0

5 months ago