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3 years ago

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? y = x2 - 6x-7

Zanzabum

Answer:

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, a = 1, b = -6, and c = -7.

Find the x-coordinate of the vertex:

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

Substitute this back into the equation to find the y-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 $y = \frac{-x}{2}-1$

Solution:

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

The equation of line in slope intercept form is given as:

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, According to question

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