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notka56 [123]
3 years ago
9

Here is a five-sided polygon. Describe or show the strategy you would use to find its area. Mark up and label the diagram to sho

w your reasoning so that it can be followed by others. (It is not necessary to actually calculate the area.)
Mathematics
1 answer:
Julli [10]3 years ago
5 0

Answer:

Step-by-step explanation:

1. Here are two five-pointed stars. A student said, “Both figures A and B are polygons. They are both composed of line segments and are two-dimensional. Neither have curves.” Do you agree with the statement? Explain your reasoning.

Two five-pointed stars, labeled A and B. Star A is composed of a pentagon surrounded by five small triangles. Star B is a single shape with one continuous perimeter.

2. Here is a five-sided polygon. Describe or show the strategy you would use to find its area. Mark up and label the diagram to show your reasoning so that it can be followed by others. (It is not necessary to actually calculate the area.)

A grid.

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Cable company A charges $45 a month for cable plus a $18 installation fee. Cable B charges $39 a month for cable plus a $30 fee
blagie [28]

Question

Cable company A charges $45 a month for cable plus a $18 installation fee. Cable B charges $39 a month for cable plus a $30 fee for installation. Which inequality can be used to find out when the monthly cost for Cable company A is less than Cable company B?

a)39x+30<45x+18

b) 45x+18>39x+30

c) 45x+18<39x+30

d)39x+18<45x+30

Answer:

c) 45x+18<39x+30

Step-by-step explanation:

Step 1

We have to find the Algebraic expressions for the cable companies

Cable company A charges $45 a month for cable plus a $18 installation fee.

Let the number of months be represented as x

Hence, this is represented as:

$45 × x + $18

= 45x + 18

Cable B charges $39 a month for cable plus a $30 fee for installation.

Let the number of months be represented as x

Hence, this is represented as:

$39 × x + $30

= 39x + 30

The inequality that can be used to find out when the monthly cost for Cable company A is less than Cable company B?

= Cable company A < Cable company B

= 45x + 18 < 39x + 30

Therefore option c is correct

8 0
3 years ago
Check the picture plzzzz
pentagon [3]

Answer:(2 1/2, -9)

Step-by-step explanation:

8 0
3 years ago
Which statements are true about the X intercepts of quadratic functions
Molodets [167]

Answer: There can be more than one zero

An x-intercept is located at the point on the function where the value of x is 0.

theres a lot lol. can you be more specific if these are wrong?

Step-by-step explanation:

8 0
4 years ago
write an equation in slope intercept form for the line that passes through the points (3,2) and(-9,6)
netineya [11]

Answer:

y = - \frac{1}{3} x + 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (3, 2) and (x₂, y₂ ) = (- 9, 6)

m = \frac{6-2}{-9-3} = \frac{4}{-12} = - \frac{1}{3}, hence

y = - \frac{1}{3} x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 9, 6), then

6 = 3 + c ⇒ c = 6 - 3 = 3

y = - \frac{1}{3} x + 3 ← in slope- intercept form

4 0
3 years ago
Match each percent amount to its correct value. Tiles 15% of 30 30% of 45 60% of 7 23% of 20
Naddik [55]
15% of 30 = 4.5
30% of 45= 13.5
60% of 7= 4.2
23% of 20= 4.6
8 0
3 years ago
Read 2 more answers
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