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Burka [1]
3 years ago
11

A school purchases boxes of candy bars each box contains 50 candy bars. each box costs $30.

Mathematics
1 answer:
mr_godi [17]3 years ago
4 0
The school have to charge each candy bar for $0.80 cents to make a profit of $10 per box.
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Which of the following graphs is described by the function given below? <br>y = x2 - 6x-7 ​
Zanzabum

Answer:

A

Step-by-step explanation:

We are given the function:

\displaystyle y = x^2 - 6x - 7

And we want to determine its graph.

One of the most important features of a quadratic is its vertex. So, we can start by finding the vertex using the formulas:

\displaystyle \text{Vertex} = \left(-\frac{b}{2a}, f\left(-\frac{b}{2a}\right)\right)

In this case, <em>a</em> = 1, <em>b</em> = -6, and <em>c</em> = -7.

Find the <em>x-</em>coordinate of the vertex:

\displaystyle x = -\frac{(-6)}{2(1)} = 3

Substitute this back into the equation to find the <em>y-</em>coordinate:

\displaystyle y(3) = -16

Therefore, our vertex is at (3, -16).

The only graph whose quadratic's vertex is at (3, -16) is Graph A. Thus, our answer is A.

5 0
3 years ago
the temperture dropped 6 c every hour for 8 hours. what was the total number of degrees the temperature changed in the 8 hours.
maksim [4K]

Answer:

48 c

Step-by-step explanation:

if each hour it goes up by 6 c then all u need to do is add 6, 8 times (aka 6 times 8)

7 0
3 years ago
Read 2 more answers
Through (2,-2) parallel to y= -1/2x+5
Rzqust [24]

The equation of line passing through (2, -2) and parallel to y = \frac{-1}{2}x+5 is y = \frac{-x}{2}-1

<em><u>Solution:</u></em>

We have to find the equation of line passing through (2, -2) and parallel to y = \frac{-1}{2}x+5

<em><u>The equation of line in slope intercept form is given as:</u></em>

y = mx + c  ------- eqn 1

Where "m" is the slope of line and "c" is the y-intercept

On comparing the given equation of line y = \frac{-1}{2}x+5 with eqn 1,

m = \frac{-1}{2}

We know that slope of a line and slope of line parallel to it is always equal

Therefore, slope of line parallel to given line is also m = \frac{-1}{2}

Substitute (x, y) = (2, -2) and m = \frac{-1}{2} in eqn 1

-2=\frac{-1}{2}(2)+c\\\\-2 = -1+c\\\\c = -2+1\\\\c = -1

Substitute c = -1 and m = \frac{-1}{2} in eqn 1

y = \frac{-1}{2}x -1\\\\y = \frac{-x}{2}-1

Thus equation of line parallel to given line is found

8 0
3 years ago
Andre is working from home to a festival that is 1 5/8 km away. He takes a quick rest after walking 1/3 km what fraction of the
Anton [14]

Answer:

The fraction of trip completed by Andre is  \frac{31}{24} km

Step-by-step explanation:

Given as :

The Total distance between the home to a festival = 1 \frac{5}{8} km

I.e The total distance between the home to a festival =  \frac{13}{8} km

The distance cover by Andre before taking rest =  \frac{1}{3} km

Let The fraction of trip completed by Andre = x km

So, <u>According to question</u>

The fraction of trip completed by Andre = The Total distance between the home to a festival - The distance cover by Andre before taking rest

or, x =  \frac{13}{8} km - \frac{1}{3} km

or, x =  \frac{39 - 8}{24} km

∴ x = \frac{31}{24} km

Or, The fraction of trip completed by Andre = x = \frac{31}{24} km

Hence , The fraction of trip completed by Andre is  \frac{31}{24} km Answer

8 0
4 years ago
Read 2 more answers
Help me to do this question of math ​plz plz I will mark as brainlist plz plz plz plz
natulia [17]

Answer:

Alternate Angles are equal

8 0
3 years ago
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