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3 years ago

How can you use a rate to compare the costs of two boxes of cereal that are different sizes

Mathematics

2 answers:

liraira [26]3 years ago

7 0

By normally dividing it (the two different size of the boxes

Sloan [31]3 years ago

3 0

By dividing it! Hope this helps :)

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Find the coordinates of the maximum point of the graphs of each of the following

katovenus [111]

The answer I think it’s Y=(3-x)(x+8)

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3 years ago

2. US$ 1.7135

Brrunno [24]

Answer:

1577.8 US dollars are received for 1127 UK pounds.

5669.5 UK pounds are received for US$7937.3.

Step-by-step explanation:

The questions are solved by proportions, using a rule of three.

How many US dollars are received for 1127 UK pounds?

1 UK pound = 1.4 US dollars

1127 UK pounds - x US dollars

Applying cross multiplication:

$x = 1127*1.4 = 1577.8$

1577.8 US dollars are received for 1127 UK pounds.

How many UK pounds are received for US$7937.3?

1 UK pound = 1.4 US dollars

x UK pounds - 7937.3 US dollars

$1.4x = 7937.3$

$x = \frac{7937.3}{1.4}$

$x = 5669.5
$

5669.5 UK pounds are received for US$7937.3.

4 0

3 years ago

Solve. 15(20−10x)−8x>−6x−16

patriot [66]

Answer: x < 79/38

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

An airplane has begun its descent for a landing. When the airplane is 150 miles west of its destination, its altitude is 25,000

Rufina [12.5K]

We have two points on a plane p1(150, 25000), p2(90, 19000) and we can find a linear equation from them, lets calculate the slope:
m = (y2 - y1)/(x2 - x1)
where x1, y1 and x2, y2 are the point's coordinates:
m = (19000 - 25000)/(90 - 150)
m = -6000/-60
m = 100
so we have the slope now, and we can use the equation of the line for a point and having the slope, that equation is:
y - y1 = m(x - x1)
so we substitute:
y - 25000 = 100(x - 150)
y = 100x + 25000 - 15000
y = 100x + 10000
so this is the linear equation that models the airplane descent, when the airplane hits the ground, then y = 0, and we need to find the x, that is the position in relation to the runway:
<span>0 = 100x + 10000
</span>-100x = 10000
x = -100

3 0

3 years ago

For what value or values of x = 7 < 3x + 2?

Sindrei [870]

The anwer is 5>3x

Your welcome

3 0

3 years ago