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4 years ago

Which undefined terms are needed to define parallel lines? A. Point, line B. Point, coplanar C. Line, plane D. Coplanar, line

Mathematics

2 answers:

Margarita [4]4 years ago

7 0

Answer:

Try coplanar, line

Step-by-step explanation:

Two lines are parallel lines if they are coplanar and do not intersect. Lines that are not coplanar and do not intersect are called skew lines. Two planes that do not intersect are called parallel planes.

SVETLANKA909090 [29]4 years ago

5 0

Answer:

The answer should be A). point and line

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the formula for the nth term of a sequence of numbers is 1/2n(n+1) the first term of this sequence is 1. Use the formula to writ

Afina-wow [57]

1/2 * 1 * (1 + 1) = 1
1/2 * 2 * (2 + 1) = 3
1/2 * 3 * (3 + 1) = 6
1/2 * 4 * (4 + 1) = 10
Best answer me please!

5 0

3 years ago

Determina la suma de las siguientes progresiones los primeros 18 términos de la progresión aritmética: an = -{4, 12, 20, 28, 36,

Anuta_ua [19.1K]

Hello,
let
t=(-4)+(-12)+(-20)+(-28)+(-36)+....=-(4+12+20+28+36+...)=-s

$a_{1}=4=-4+1*8$
$a_{2}=12=-4+2*8$
$a_{3}=20=-4+3*8$
$a_{4}=28=-4+4*8$

...
$a_{18}=?=-4+18*8=140$

$a_{i}=-4+i*8$

$s=\sum_{i=1}^{18} (-4+i*8)=\sum_{i=1}^{18} (-4)+\ 8*\sum_{i=1}^{18}(i)\\\\=(-4)*18+8*(1+2+3+4...+18)\\\\=-72+\frac{(1+18)*18}{2}\\\\=-72+171=99$

$\boxed{\ t=-99}$

6 0

3 years ago

Find the area of the composite figure

yuradex [85]

Answer:

The area is 189 square meter.

Step-by-step explanation:

In this figure we have one square of 7 meter sides and one rectangle of 20 meter length and 7 meter of width.

Area of a square = side²

area of a rectangle = Length × width

Area of the square = 7² = 7 × 7 = 49 meter²

Area of the rectangle = 20 × 7 = 140 meter²

Area of the composite figure = 49 + 140

= 189 meter²

The area is 189 square meter.

6 0

3 years ago

Read 2 more answers

I can’t tell if 3 is a dilation or not!

S_A_V [24]

Answer:

No, its not

Step-by-step explanation:

The points of the image are not moved away from the center of dilation proportionally. I don't think anyway.

3 0

3 years ago

Convert the equation into standard form.<br> 25x^2 - 9y^2 + 200x + 18y + 166 = 0

SashulF [63]

Answer:

the answer is d (x+4)^2/9 - (y-1)^2/25

Step-by-step explanation:

its correct on edge

8 0

3 years ago