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4 years ago

9

the average orbital distance from the sun to mercury is 0.39 astronomical units. the average orbital distance from the sun to Ve

nus is 0.72 au what is the average distance between the orbits of mercury and Venus in astronomical units

1 answer:

leonid [27]4 years ago

4 0

Uhhh, if you guys are doing means(or averages) in class, then add .39+.72 to get 1.11. Then divide by two.

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URGENT PLEASE HELP 98 POINTS Find the direction angle of vector v to the nearest tenth of a degree.

zlopas [31]

Answer:

The direction angle of vector v is equal to $9.5\°$

Step-by-step explanation:

Let

$A(-5,0),B(7,2)$

The vector v is given by

$v=B-A$

$v=(7, 2) - (-5, 0)$

$v=((7 - (- 5)), (2-0))$

$v=(12, 2)$

Remember that

The direction angle of the vector is equal to

$tan (\theta) =\frac{y}{x}$

substitute the values

$tan (\theta) =\frac{2}{12}$

$\theta=arctan(\frac{2}{12})=9.5\°$

5 0

3 years ago

Read 2 more answers

Find the cardinal number for the given set.

zzz [600]

Answer:

4

Step-by-step explanation:

The cardinality of a set is the number of members in the set. So besides the numbers in between the 18 and 58 you currently have 4.

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3 years ago

17 calculators for 340$ or 200 calculators for 3,600.

solong [7]

The better deal is the 200 calculators

3 0

3 years ago

14. Michelle simplified an expression for the perimeter of the rectangle below and got X + 35.

Zigmanuir [339]

Answer:

The correct expression for the perimeter is $P=(\frac{5}{3}x+70)\ units$

see the explanation

Step-by-step explanation:

The complete question in the attached figure

Let

L ----> the length of rectangle

W ---> the width of rectangle

we know that

The perimeter of rectangle is equal to

$P=2(L+W)$

In this problem we have

$L=(\frac{5}{6}x+23)\ units$

$W=12\ units$

substitute the values

$P=2(\frac{5}{6}x+23+12)$

$P=2(\frac{5}{6}x+35)$

$P=(\frac{10}{6}x+70)\ units$

Simplify

$P=(\frac{5}{3}x+70)\ units$

so

Michelle didn't multiply the sum of length and width by 2

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3 years ago

In 2–4, write Yes or No to indicate whether the expressions are equivalent. 2. 10x - 3 + 2x - 5 and 4(3x - 2) 3. 3y + 3 and 9(y

Dmitry [639]

Step-by-step explanation:

2. 10x - 3 + 2x - 5 and 4(3x - 2)

10x - 3 + 2x - 5

Upon simplifying;

10x + 2x - 3 - 5

12x - 8

4(3x - 2)

12x - 8

Both expressions are equivalent - Yes!

3. 3y + 3 and 9(y + 1/3)

9(y + 1/3)

upon simplifying;

9y + 9 (1/3)

9y + 3

3y + 3

Both expressions are not equivalent - No!

4. 6(3x + 1) and 9x + 6 + 9x

6(3x + 1)

upon simplifying;

6(3x) + 6 (1)

18x + 6

9x + 6 + 9x

Upon simplifying;

9x + 9x + 6

18x + 6

Both expressions are equivalent - Yes!

3 0

3 years ago