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3 years ago

6

Charlotte started soccer practice at 5:30 pm. Practice lasted for 1 hour and 45 minutes. What time was practice over?

2 answers:

andreyandreev [35.5K]3 years ago

4 0

It ended at 7:15 PM

gregori [183]3 years ago

3 0

Answer:

7: 15

Step-by-step explanation:

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Help help me plzzzzzzz

7nadin3 [17]

Answer:

1). 25% percentage increase

2). 75% percentage decrease

Step-by-step explanation:

1.

$Percent \: of \: change = \frac{amount \: of \: change}{original \: amount} \times 100\%$

Amount of change =30-24=6

Original amount = 24

$Percent \: of \: change = \frac{6}{24} \times 100\%$

$Percent \: of \: change = \frac{1}{4} \times 100\% = 25\%$

This means there is a percentage increase of 25%

2.

Amount of change =4-16=-12

Original amount=16

$Percent \: of \: change = \frac{ - 12}{16} \times 100\%$

$Percent \: of \: change = - \frac{3}{4} \times 100\% = - 75\%$

This means there is a percentage decrease of 75%

5 0

3 years ago

Can anyone please help me to do this with steps

qwelly [4]

Answer:

x = 58°

Step-by-step explanation:

ABCD is a cyclic quadrilateral and opposite angles are supplementary , so

∠ DAB = 180° - 121° = 59°

The angle between a tangent and a chord is equal to the angle in the alternate segment, then

∠ ABD = 63° , thus

x = 180° - (59 + 63)° = 180° - 122° = 58°

5 0

3 years ago

Forty is what percent of 50?<br><br> worth 11 pts.

RoseWind [281]

The answer is 40 is 80% of 50 ☺

3 0

3 years ago

Read 2 more answers

This line has a slope<br> of -3 and passes<br> through the point<br> (4, -10)

ANEK [815]

Answer:

Step-by-step explanation:

y= mx+c

-10= -3 x 4 +c

-10= -12 +c

c= 2

then, y= -3x+2 would be the answer, if you were wanting the equation of the line.

8 0

3 years ago

Read 2 more answers

Pam has 90 m of fencing to enclose an area in a petting zoo with two dividers to separate three types of young animals. The thre

andrew-mc [135]

Answer:

The area function is

$A=\frac{135}{2}x-\frac{9}{2}x^2$ .

The domain and range of A is $(0,15m)$ and $(0, 253.125 m^2]$ .

Step-by-step explanation:

The given length of fencing is $90 m$ .

Let the length and width of each pen be $x$ and $y$ respectively as shown in the figure.

As there are 3 pens, so, the total area,

$A= 3 xy \;\cdots (i)$

From the figure the total length of fencing is $6x+4y$ .

Here, for a significant area for the animals, $x>0$ as well as $y>0$ as $x$ and $y$ are the sides of ben.

From the given value:

$6x+4y=90\;\cdots (ii)$

$\Rightarrow y=\frac {45}{2}-\frac{3x}{2}$

Now, from equation (i)

$A=3x\left(\frac {45}{2}-\frac{3x}{2}\right)$

$\Rightarrow A=\frac{135}{2}x-\frac{9}{2}x^2\;\cdots (iii)$

This is the required area function in the terms of variable $x$ .

For the domain of area function, from equation (ii)

$x=15-\frac{2y}{3}$

$\Rightarrow x$ [as y>0]

So, the domain of area function is $(0,15m)$ .

For the range of area function:

As $x \rightarrow 0$ or $y\rightarrow 0$ , then $A\rightarrow 0$ [from equation (i)]

$\Rightarrow A>0$

Now, differentiate the area function with respect to $x$ .

$\frac {dA}{dx}=\frac{135}{2}-9x$

Equate $\frac {dA}{dx}$ to zero to get the extremum point.

$\frac {dA}{dx}=0$

$\Rightarrow \frac{135}{2}-9x=0$

$\Rightarrow x=\frac{15}{2}$

Check this point by double differentiation

$\frac {d^2A}{dx^2}=-9$

As, $\frac {d^2A}{dx^2}$ , so, point $x=\frac{15}{2}$ is corresponding to maxima.

Put this value back to equation (iii) to get the maximum value of area function. We have

$A=\frac{135}{2}\times \frac {15}{2}-\frac{9}{2}\times \left(\frac {15}{2}\right)^2$

$\Rightarrow A=253.125 m^2$

Hence, the range of area function is $(0, 253.125 m^2]$ .

4 0

4 years ago