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spayn [35]
3 years ago
7

Homework (5)

Mathematics
1 answer:
adelina 88 [10]3 years ago
7 0

Answer:

28

Step-by-step explanation:

Let's set the ratio as

7x : 9x

If you add all the states that border an ocean and do not, you will get 48 states (because Alaska and Hawaii are not part of the continental US, as they do not touch the "main" part of the country)

So, we can write this equation.

7x + 9x = 48

Simplify.

16x = 48

Divide both sides by 16.

x = 4

Now, find how many states border an ocean. In our ratio, the number of states that border an ocean was 7x. Substitute x = 4 into 7x

7 * x = 7 * 4 = 28

The number of states that border an ocean is 28.

I hope this helps! Feel free to ask any questions!

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A retailer who sells backpacks estimates that by selling them for x dollars each, she will be able to sell 100−x backpacks each
zvonat [6]

Answer:

x = 50

R = $2500

Step-by-step explanation:

Given in the question a quadratic equation,

−x² + 100x

To find the selling price, x, which will give highest revenue, y, we will find maximum value of parabola curve −x² + 100x

The value of -b/2a tells you the value x of the vertex of the function

−x² + 100x

here a = -1

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Selling price = -(100)/2(-1)

                    =   50

 

R = −(50)² + 100(50)

  = 2500

8 0
3 years ago
The coordinates of the preimage of polygon ABCD and the image ofA'B'C'D' are given below. What rule describes the transformation
I am Lyosha [343]

The coordinates of polygon ABCD are:

A(4,3) B(4,0) C(-1, 1) D(-1, 4)

and

The coordinates of the transformed polygon A'B'C'D' are:

A'(1, 1) B'(1, -2) C'(-4,-1) D'(-4, 2)

To understand the transformed rule, just remove the coordinates of the actual polygon from the transformed polygon.

A' - A = (1, 1) - (4, 3) = (1 - 4, 1 - 3) = (-3, -2)

Similarly,

B' - B = (1, -2) - (4, 0) = (1 - 4, -2 - 0) = (-3, 2)

The same result will be obtained from other points (C and D). Therefore, the first option (-3, 2) is correct.

3 0
1 year ago
25 POINTS PLZ ANSWER FAST!!!!!!!!!!!!!!!!!!
andrew-mc [135]

Answer:

V = 1/3 ( 35)*12

Step-by-step explanation:

The volume is given by

V = 1/3 Bh

Where B is the area of the base

V = 1/3 ( 35)*12

8 0
3 years ago
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ANEK [815]

Answer: 64

Step-by-step explanation: 4 to the 3rd means 4 times itself three times.

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What is the given point on the line of this equation y +2 = 5/3(x-3)
8_murik_8 [283]

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6

Step-by-step explanation:

Solve x then y after..

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