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olchik [2.2K]
4 years ago
11

a recipe serving 8 people calls for 5 pounds of apples and 2 cups of flour. you want to prepare the recipe for 24 people

Mathematics
2 answers:
k0ka [10]4 years ago
7 0

A recipe serves 8 people, and calls for 5 lbs of apples and 2 cups of flour. You want to prepare it for 24 people. Divide 24 by 8 to get 3, and then multiply your ingredients by 3.

So for 24 people, you'll need 15 lbs of apples, and 6 cups of flour.

Cloud [144]4 years ago
6 0

15 pounds of apples and 6 cups of flour

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What is the equation of a line that is perpendicular to −x+3y=9 and passes through the point (−3, 2) ?
vekshin1

The equation of line that is perpendicular to the line -x+3y =9  and passes through the point \left({-3,2}\right)  is \boxed{{\mathbf{y=-3x-7}}} .

Further explanation:

It is given that the equation of line is -x+3y =9  and passes through point \left({-3,2}\right) .

Rewrite the given equation -x+3y =9  as follows:

\begin{aligned}-x+3y&=9\\3y&=9+x\\y&=\frac{9}{3}+\frac{1}{3}x\\y&=\frac{1}{3}x+3\\\end{aligned}

Now, compare the obtained equation of line y=\frac{1}{3}x+3  with the standard equation of line y=mx+b .

\begin{aligned}m&=\frac{1}{3}\\b&=3\\\end{aligned}

Therefore, the slope is \frac{1}{3} .

It is given that both lines are perpendicular to each other so the product of slope must be equal to -1 .

{m_1}\cdot {m_2}=-1                                                          …… (1)

Substitute \frac{1}{3}  for {m_1}  in equation (1) to obtain the value of slope {m_2} .

\begin{aligned}\frac{1}{3}\cdot{m_2}&=-1\\{m_2}&=-3\\\end{aligned}

Therefore, the slope is -3 .

It is given that the line passes through point \left({-3,2}\right) .

The point-slope form of the equation of a line with slope m  passes through point \left({{x_1},{y_1}}\right) is represented as follows:

y-{y_1}=m\left({x-{x_1}}\right)                                      …… (2)

Substitute -3  for {x_1} , 2  for {y_1}  and -3  for m  in equation (2) to obtain the equation of line.

\begin{aligned}y-2&=-3\left({x-\left({-3}\right)}\right)\\y-2&=-3\left({x+3}\right)\\y&=-3x-9+2\\y&=-3x-7\\\end{aligned}

Therefore, the equation of line is y=-3x-7 .

Thus, the equation of line that is perpendicular to the line -x+3y=9  and passes through the point \left({-3,2}\right)  is \boxed{{\mathbf{y=-3x-7}}} .

Learn more:

1. Which classification best describes the following system of equations? <u>brainly.com/question/9045597 </u>

2. What is the value of x  in the equation x-y=30  when y=15 ? <u>brainly.com/question/3965451 </u>

3. What are the values of x? <u>brainly.com/question/2093003</u>

Answer Details:

Grade: Junior High School

Subject: Mathematics

Chapter: Coordinate Geometry

Keywords: Coordinate Geometry, linear equation, system of linear equations in two variables, variables, mathematics, equation of line, line, passes through point.

6 0
4 years ago
Read 2 more answers
For what values of m does the graph of y = 3x^2 + 7x + m have two x-intercepts? a) m&gt;12/49 b) m&lt;12/49 c) m&lt;49/12 d) m&g
den301095 [7]

The quadratic formula, has a part we call the "discriminant" defined by the variables that are inside the square root, and is denotated by "delta":

<span>Δ=<span>b2</span>−4ac</span> Whenever we solve a quadratic equation that is complete and we analyze the discriminant, we can get 3 scenarios: <span>if→Δ>0<span>=></span>∃<span>x1</span>,<span>x2</span>/a<span>x2</span>+bx+c=0</span> This just means: "if the discriminant is greater than zero, there will exist two x-intercepts" And for the second scenario: <span>if→Δ=0→∃<span>xo</span>/a<span>x2</span>+bx+c=0</span> This means: "if the discriminant is equal to zero, there will be one and only one x-intercept" And for the last scenario: <span>if→Δ<0→∃x∉R/a<span>x2</span>+bx+c=0</span> This means that :"if the discriminant is less than zero, there will be no x-intercepts" So, if we take your excercise and analyze the the discriminant: <span>3<span>x2</span>+7x+m=y</span> we will find the values that satisfy y=0 : <span>3<span>x2</span>+7x+m=0</span> And we'll analyze the discriminant: <span>Δ=<span>72</span>−4(3)(m)</span> And we are only interested in the values that make the discriminant equal zero: <span><span>72</span>−4(3)(m)=0</span> All you have to do is solve for "m".

6 0
3 years ago
6x+2y=12 solve for y,state the m and b,and graph
kramer
Move 6x to the right side:  2y=12-6x
Divide both sides by 2:      y=6-3x
m is the slope which in this case is -3
To see a graph plug y=6-3x into the website wolfram alpha!
Hope this helps!!

6 0
4 years ago
Read 2 more answers
REDUCE THIS FRACTION 14/7(X+2)<br> WILL GIVE THANKS IF CORRECT
zheka24 [161]

2x + 4

Step-by-step explanation:

14/7(x+2)

14 / 7 = 2

SO;

2(x + 2)

Expand the brackets;

2x + 4

6 0
3 years ago
Substitution method please
JulijaS [17]

Answer:

x = 3, y = -2

Step-by-step explanation:

Solving the bottom equation for y, we have y = 4 - 2x. Substitute that into the top equation, and solve for x.

4x - 3(4 -2x) = 18

4x - 12 + 6x = 18

10x - 12 = 18

10x = 30

x = 3

From this, we have y = 4 - 2(3) = 4 - 6 = -2

5 0
3 years ago
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