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3 years ago

Number one and number two

Mathematics

1 answer:

luda_lava [24]3 years ago

6 0

The sum of the angles of an n-sided polygon is (n-2)×180°

For a 30-gon, it would be 28x180 = 5040, answer B

Second question is more of a trick question. Exterior angles always add up to 360. So answer H.

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Is y=-9x proportional

icang [17]

Yes, y=-9x is proportional

3 0

3 years ago

Read 2 more answers

Jenna found three solution to a linear equation she graphed them, but they don't lie in a straight line. What errors could jenna

steposvetlana [31]

Answer:

A system of linear equation could only have 1 solution. This is because the straight lines will only have to meet, cross, or intersect each other once.

There are many different methods in arriving to the final answer. However, errors cannot be perfectly avoided. One of these errors to mistakenly identify equations as linear. It is important that we know that the equations we are dealing with are of exact or correct characteristics.

Also, if she had used substitution method, she might have mistakenly taken the value of one variable for the other.

5 0

3 years ago

(-3,600,000,000)x(0.00000824)

Nadusha1986 [10]

-29664 is the correct answer. This mostly deals with the zeros and crossing them off

8 0

3 years ago

Need help ASAP!!!!!!!!!!!!

eimsori [14]

Answer:

8 small tables

Step-by-step explanation:

they told you they have 5 large tables that seat 10 guests and 98 guests are coming. You need to subtract 50 from 98 because after you multiple how many guests can sit at each large table by how many large tables they have it equals 50 so 98-50=48 then you need to divide 48 by six because each small table sits six people so 48/6=8 so you need 8 small tables.

6 0

3 years ago

Find the area of the shaded figure below. Use 3.14 for pi. NO LINKS OR IMPROPER ANSWERS

Lapatulllka [165]

Answer:

The area of the shaded region is about 58.9 square inches.

Step-by-step explanation:

To solve this question, let's recall some facts.

We know that the area of a circle can be defined as the following:

$A = \pi r^2$

where r is the radius of the circle.

We too know that circles have a diameter and a radius. The diameter of a circle is the distance a line that connects two points on a circle with its center, and the radius is half of the diameter.

We also know that figures can touch each other, or be in tangent with each other. For the sake of simplicity, we're going to assume that the shaded circles are in tangent with each other, or touch each other. Because they touch each other, these three circles can share 5 in. of the 15 in. rectangle. This means that the circles are 5 in. in diameter, or 2.5 in in radius.

Now, we can solve the problem.

Because we have 3 circles, each with 2.5 in. radii, we can have the following expression which represents the total area of these circles:

$3*\pi (2.5)^2$

$= 3*3.14(2.5)^2$

$= 3 *3.14 *6.25$

$= 58.875$

After approximation, I can conclude that the area of the shaded region is 58.9 square inches.

6 0

2 years ago