ABCD is a rectangle. C has coordinates (5, 3) and D has coordinates (-3, -1).AB has equation x- 2y + 6 = 0 work out the coordinates of points A and B.

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The sum of the measures of the interior angles of a polygon is 2880°. How many sides does the polygon have?14
16
18
20

Answers

Let

S------> The sum of the measures of the interior angles of a polygon

n-------> number of sides of a polygon

we know that

The formula to find the sum of the measures of the interior angles of a polygon is equal to

$S=(n-2)*180$ °

in this problem

$S=2880$ °

Solve for n

$S=(n-2)*180\n \n n=(S)/(180)+2\n \n n=(2880)/(180)+2\n \n n=16+2\n \n n=18\ sides$

therefore

the answer is

$18\ sides$

there are 18 sides.....

A student has earned scores of 87, 81, and 88 on the first 3 of 4 tests. If the student wants an average (arithmetic mean) of exactly 87, what score must she earn on the fourth test?

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to find an average you take the numbers to be averaged and add them together then You take the number and divide it by the number of numbers, in this case 4, and that gives you the average.
on this problem you want to do the opposite. you know the average she wants, an 87, so you multiply it by 4. 87*4=348. then you add the three numbers you have (88,81 and 87) and you get 256.
then you subtract 256 from 348 and you get 92. 92 is your answer to check just add 87+81+88+92=348
348/4=87
87 was the average she wanted.
Hope this helped! good luck :)

Can you please help me with this question and i will give you a Brainiest

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The paperclip is a typical example of something with a mass of about a gram. The other items are significantly more massive. I'm in the US so I remember there are 28 grams in an ounce and 454 grams in a pound.

Answer: paperclip

What does m and b stand for in y=mx+b?

Answers

B is where the line crosses the y axis

its called slope-intercept form. m is the slope where the lines cross and b is the y- coordinate of the y-intercept.

I’ll give brainliest , 7th grade work .

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Answer:

In order to properly answer this, we need to know the measurement of the pool in meters

Step-by-step explanation:

Answer: what are the numbers?

Step-by-step explanation:

Find an explicit rule for the nth term of a geometric sequence where the second and fifth terms are -6 and 162, respectively.

Answers

Hello,

a(2)=-6
a(3)=-6*r
a(4)=-6*r²
a(5)=-6*r^3=162
a(5)/a(2)=r^3=162/(-6)=-27==>r=-3

a(1)=-6/(-3)=2
a(2)=2*(-3)
a(3)=2*(-3)²
a(4)=2*(-3)^3
a(5)=2*(-3)^4

a(n)=2*(-3)^(n-1)

Answer

Answer:

an = 2 • (-3)^n - 1

Step-by-step explanation:

I have taken the test and this is the correct option :)

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Which statement is true about a line and a point? A point and a line have length as a dimension to measure. A point is a location and a line has many points located on it. A line and a point cannot lie on the same plane. A line and a point cannot be collinear. 2. Trisha drew a pair of line segments starting from a vertex. Which of these statements best compares the pair of line segments with the vertex? The line segments and the vertex have length as a dimension of measurement and there are three collinear points on each. Line segments and the vertex have two endpoints each and the distance between the end points is their dimension. Line segments have two endpoints and a vertex is a common endpoint where two line segments meet. The line segments and the vertex have their lines extending in one direction only and the lengths of both are infinite.

Write 5.1 x 10^-3 as an ordinary number.

In the equation 4x^3=60 , what is the value of x ?