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podryga
1 month ago
8

The graph shows the rate at which the depth of the water in a pond is changing over time. On a coordinate plane, a graph titled

Depth of Pond Water has Minutes on the x-axis and Feet on the y-axis. A line goes through points (2, 4) and (4, 8). The depth of the water is increasing by feet each minute.
Mathematics
1 answer:
Inessa [12.5K]1 month ago
4 0
To find the distance between the two provided points, which is essential for the problem, we use the formula: distance = (y2 - y1) / (x2 - x1). Given points (2, 4) and (4, 8), we can replace values accordingly: distance = (8 - 4) / (4 - 2) resulting in 4 / 2 = 2. Thus, the rate of increase in water depth is 2 feet per minute.
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The side length, s, of a cube is x – 2y. If V = s3, what is the volume of the cube? x3 – 6x2y + 12xy2 – 8y3 x3 + 6x2y + 12xy2 +
Leona [12618]

V = x³ - 6x²y + 12xy² - 8y³

V = (x - 2y)³

   = (x - 2y)(x - 2y)(x - 2y) ( start by expanding the first pair of factors )

   = (x² - 4xy + 4y²)(x - 2y) ( multiply the terms from the first group with those in the second )

   = x³ - 4x²y + 4xy² - 2x²y + 8xy² - 8y³ ( combine similar terms )

  = x³ - 6x²y + 12xy² - 8y³




8 0
1 month ago
Read 2 more answers
Which of the following are true statements about a 30-60-90 triangle? Check all that apply.
Inessa [12570]

Answer:

C. The hypotenuse measures twice the distance of the shorter leg.

B. The longer leg is √3 times the length of the shorter leg.

Step-by-step explanation:

A 30-60-90 triangle is considered a right triangle. Triangles containing a right angle are classified as right triangles. Only one right angle can exist in such a triangle. The representation of this case is illustrated below. Let’s clarify why the proposed statements are valid:

The hypotenuse of a right triangle is always opposite to the right angle. If we designate a as the shorter leg, the sine law affirms that the hypotenuse is:

\frac{H}{sin90}=\frac{a}{sin30} \\ \\ \frac{H}{1}=\frac{a}{0.5} \\ \\ \boxed{H=2a}

This indicates that the hypotenuse is double the length of the shorter leg

The longer leg, which we can call x, can be determined with the Pythagorean Theorem:

H^2=x^2+a^2 \\ \\ x=\sqrt{H^2-a^2} \\ \\ x=\sqrt{(2a)^2-a^2} \\ \\ x=\sqrt{4a^2-a^2} \\ \\ x=\sqrt{3a^2}=\sqrt{3}a

Thus, it is accurate that the longer leg is √3 times longer than the shorter leg.

3 0
1 month ago
Read 2 more answers
Ivan and Tanya share £150 in the ratio 4:1 how much more Ivan has then tanya
Zina [12379]

Hello!

--------------------------------------------------------

Solution:

The ratio is expressed as 4 to 1.

Add these parts together.

4 + 1 equals 5.

Now divide.

150 divided by 5 results in 30.

Next, multiply to find Ivan's share.

30 multiplied by 4 gives us 120.

30 multiplied by 1 equals 30 for Tanya.

Verify.

120 plus 30 totals 150.

Then subtract.

120 minus 30 equals 90.

--------------------------------------------------------

Answer:

Ivan possesses £90 more than Tanya!

--------------------------------------------------------

I hope this has been helpful! Best of luck!

3 0
2 months ago
Read 2 more answers
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