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3 years ago

I need help with this geometry

Mathematics

1 answer:

Marizza181 [45]3 years ago

6 0

I knew there was a formula for this, but did not remember it and so had to look it up. The formula is:

A = pi*r*(r + sqrt(h^2+r^2) )

Here, A = 3.14(4 ft)(4 ft + sqrt(36 + 16) = 140.9 square feet.

When in doubt about a formula, look it up!

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Two numbers have a difference of 4 and -8. What is their product?

Wittaler [7]

Difference means - so 4-(-8)

which also the same as 4+8 so ur answer is 12

7 0

3 years ago

Find the distance from point A(−1, 7) to the line y=3x. Round your answer to the nearest tenth.

bearhunter [10]

Answer:

The distance from the point to the line is approximately 3.2 units

Step-by-step explanation:

Distance From a Point to a Line

Is the shortest distance from a given point to any point on an infinite straight line. The shortest distance occurs when the segment from the point and the line are perpendiculars.

If the line is given by the equation ax + by + c = 0, where a, b and c are real constants, the distance from the line to a point (x0,y0) is

$\displaystyle d= \frac{|ax_0+by_0+c|}{\sqrt{a^2+b^2}}$

The line is given by the equation:

y=3x. We need to transform it into the specified form.

Subtracting 3x:

y - 3x = 0

Comparing with the general form of the line, we have

a=-3, b=1, c=0

The point (xo,yo) is (-1,7), thus:

$\displaystyle d= \frac{|-3\cdot (-1)+1\cdot 7+0|}{\sqrt{(-3)^2+1^2}}$

$\displaystyle d= \frac{|3+7|}{\sqrt{9+1}}$

$\displaystyle d= \frac{|10|}{\sqrt{10}}$

$\displaystyle d= \frac{10}{\sqrt{10}}$

$d\approx 3.2$

The distance from the point to the line is approximately 3.2 units

4 0

3 years ago

When making cookies, Avery needs 15 minutes to prepare the dough and an additional 12 minutes of baking time for each batch of c

Tresset [83]

Answer: 1 27

2. 54

9 243

10. 270

Step-by-step explanation: for one batch, the total minutes will be 15 + 12, so 27. Multiply 27 times b, the number of batches.

There may be another solution IF he is starting to prepare the next batch while the preceding is in the oven. Since this is not stated, I won't offer that solution here.

5 0

3 years ago

Lee filled up his gas tank before starting a road trip. If he used 5.8 gallons two hours into the trip, and has 12.4 gallons rem

Cloud [144]

The answer would be 18.2 gallons because they used up 5.8 gallons, they still have 12.4 gallons that they did not use and in order to get the original amount of gas they had before the trip, you would add up 12.4 and 5.8 to get the Original amount. Hope this helps.

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4 years ago

Please help me with my 7.12 Unit Assessment: Geometry Basics, Part 1.

DIA [1.3K]

1. DEF
2. 3rd option
3. Angles 3 and 5 are alternate interior angles, as are angles 2 and 8. Alternate interior angles are congruent.
5. 94

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3 years ago