All categories

3 years ago

Is this a proportional relationship c=7n+2

Mathematics

1 answer:

just olya [345]3 years ago

8 0

Answer:

Step-by-step explanation:

A proportional relationship must go through (0,0)

c=7n+2

0 = 7(0) +2

0 = 2

This is not true so it is not a proportional relationship

You might be interested in

Which are steps that could be used to solve 0 = 9(x2 + 6x) – 18 by completing the square? Check all that apply.

Fiesta28 [93]

Answer:

$18+81=9(x^{2}+6x+9)$

$11=(x+3)^{2}$

Step-by-step explanation:

we have

$0=9(x^{2} +6x)-18$

Adds 18 both sides

$18=9(x^{2} +6x)$

Complete the square

$18+81=9(x^{2}+6x+9)$

$99=9(x^{2}+6x+9)$

Divide by 9 both sides

$11=(x^{2}+6x+9)$

Rewrite as perfect squares

$11=(x+3)^{2}$

5 0

4 years ago

OABC is a tetrahedron and OA=a, OB=b, and OC=c. The point P and Q are such that OA =AP and 2OB = BQ. The point M is a midpoint o

kondaur [170]

Given

.OABC is a tetrahedron

OA=a, OB=b, and OC=c.

point P and Q are such that OA =AP and 2OB = BQ

point M is a midpoint of PQ.

Find AB ,PQ, CQ ,QM ,MB ,OM in terms of a, b, and c.

To proof

we proof this by using the Triangle law of vector addition

when two vectors are represented by two sides of a triangle in magnitude and direction taken in same order then third side of the third side of that triangle represents in magnitude and direction the resultant of the vectors.

by using the diagram as shown below

$\vec{OA}=\vec{a}, \vec{OB}=\vec{b}\\\vec{OP}=2\vec{a},\vec{OQ}=3\vec{b}$

$\vec{OA}+\vec{AB}=\vec{OB}\\\vec{AB}=\vec{b}-\vec{a}$

$\vec{OP}+\vec{PQ}=\vec{OQ}\\\vec{PQ}=3\vec{b}-2\vec{a}$

$\vec{OC}+\vec{CQ}=\vec{OQ}\\\vec{CQ}=3\vec{b}-2\vec{c}\\\vec{QM}=-\frac{1}{2}\vec{PQ}\\$

$\vec{QM}=\vec{a}-\frac{3}{2}\vec{b}\\\vec{OM}=\vec{OQ}+\vec{QM}$

$\vec{OM}=\vec{a}+\frac{3}{2}\vec{b}\\\vec{MB}=-\vec{a}-\frac{1}{2}\vec{b}$

hence proved

6 0

3 years ago

What is the best estimate of 49.13 + 0.58?<br><br> A: 80<br> B: 40<br> C: 25<br> D: 50

nirvana33 [79]

I believe the answer is D

7 0

4 years ago

Read 2 more answers

Find the distance between the two points in simplest radical form.<br> (7,2) and (-1, -3)

Paul [167]

Answer:

The answer is

<h2> $\sqrt{89} \: \: \: \: units \\$ </h2>

Step-by-step explanation:

The distance between two points can be found by using the formula

$d = \sqrt{ ({x_1 - x_2})^{2} + ({y_1 - y_2})^{2} } \\$

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(7,2) and (-1, -3)

The distance between them is

$d = \sqrt{( {7 + 1})^{2} + ({2 + 3})^{2} } \\ = \sqrt{ {8}^{2} + {5}^{2} } \\ = \sqrt{64 + 25} \\ = \sqrt{89} \: \: \: \: \: \: \: \: \: \:$

We have the final answer as

$\sqrt{89} \: \: \: \: units \\$

Hope this helps you

8 0

4 years ago

SOMEONE PLZ HELP ! I am stuck on this and I don’t know how to do it someone please help, thank you !

ruslelena [56]

Answer:

| 10 -10 1 |

| 1 -2 -4 |

| -8 13 -24|

Step-by-step explanation:

First multiply each element in matrix A, this gives:

| -6 - 2 -3 |

| 1 -6 -4 |

| -4 5 0 |

Now we multiply each element in matrix B by 4, this gives:

| -16 8 -4 |

| 0 -4 0 |

| 4 -8 24 |

Finally subtract this from the first matrix ( subtracting element by element) gives:

| 10 -10 1 |

| 1 -2 -4|

| -8 13- 24|

5 0

4 years ago