Why is y=-2x considered a function?

Given m | n, find the value of x.<br> m<br> n<br> 68<br> (6x+8)

BARSIC [14]

Answer:

As 6x+8 = 68

=> x = 10

Hope it helps

4 0

2 years ago

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Can someone please help me please

qwelly [4]

Answer:

$1) \dfrac{12+\sqrt{-16}}{4}=\dfrac{12+\sqrt{16i^{2}}}{4}\\\\\\=\dfrac{12+4i}{4}=\dfrac{12}{4}+\dfrac{4i}{4}\\\\\\= 3 + i$

Real part = 3 & imaginary part = 1

2) 4 + 7i - 8 = 4 -8 + 7i

= -4 + 7i

Real part = -4 & imaginary part = 7

$3)\dfrac{\sqrt{9}+\sqrt{-4}}{5}=\dfrac{3+\sqrt{4i^{2}}}{5}\\\\\\=\dfrac{3}{5}+\dfrac{2i}{5}\\\\\\Real \ part = \dfrac{3}{5} \ & \ imaginary \ part = \dfrac{2}{5}$

$4) -2-\sqrt{-25}=-2-\sqrt{25i^{2}}=-2-5i$

Real part = -2 & imaginary part = -5

$5)\dfrac{15-13i}{3}=\dfrac{15}{3}-\dfrac{13i}{3}\\\\\\Real \ part = \dfrac{15}{3} \ & \ imaginary \ part = \dfrac{-13}{3}$

b) 1) 6 + 4i

2) -12+ 5i

3) 5-14i

4 0

2 years ago

I NEED HELP PLEASE ANYONE

kolezko [41]

Answer:

The answer should be B, 3.4 because that is the closest answer

Step-by-step explanation:

a2+b2=c2

4 0

2 years ago

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.12 people go to a meeting. How many hands will they shake if they all shake each other's hands

Fed [463]

Well if each person shakes someone else’s hand 12 times and there’s 12 people, the 12 people x 12 hands = 144 hands shook

5 0

3 years ago

At the end of the day, February 14th, a florist had 120 roses left in his shop, all of which were red, white or pink in color an

Jet001 [13]

Answer:

25%.

Step-by-step explanation:

We have been given that at the end of the day, February 14th, a florist had 120 roses left in his shop, all of which were red, white or pink in color and either long or short-stemmed.

We are also told that 1/3 of the roses were short-stemmed.

$\text{Short-stemmed roses}=120\times \frac{1}{3}=40$

Since 20 of those were white and 15 of which were pink, so short stemmed red roses would be $40-(20+15)=40-35=5$ .

Now, we will find number of long-stemmed roses by subtracting number of short-stemmed roses from total roses as:

$\text{Long-stemmed roses}=120-40=80$

We are also told that none of the long-stemmed roses were white, so total number of white roses would be $20+0=20$ .

Let p represent the number of total pink roses.

Now, total number of red roses would be total roses (120) minus total pink roses (p) minus total white roses (20).

$\text{Total red roses}=120-p-20$

$\text{Total red roses}=100-p$

We have been given that the percentage of pink roses that were short-stemmed equaled the percentage of red roses that were short-stemmed. We can represent this information in an equation as:

$\frac{\text{Short-stemmed pink roses}}{\text{Total pink roses}}=\frac{\text{Short-stemmed red roses}}{\text{Total red roses}}$

$\frac{15}{p}=\frac{5}{100-p}$

Let us solve for p by cross-multiplication:

$1500-15p=5p$

$1500-15p+15p=5p+15p$

$1500=20p$

$20p=1500$

$\frac{20p}{20}=\frac{1500}{20}$

$p=75$

Since total number of pink roses is 75, so total number of red roses would be $100-75=25$ .

We already figured it out that 5 roses are short-stemmed, so long-stemmed roses would be $25-5=20$ .

Now, we have long stemmed roses is equal to 20 and total long-stemmed roses is equal to 80.

Let us find 20 is what percent of 80.

$\text{Percentage of the long-stemmed roses that were red}=\frac{20}{80}\times 100$

$\text{Percentage of the long-stemmed roses that were red}=\frac{1}{4}\times 100$

$\text{Percentage of the long-stemmed roses that were red}=25$

Therefore, 25% of the long-stemmed roses were red.

4 0

3 years ago