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3 years ago

Identify the angles of rotational symmetry for the figure.

Mathematics

1 answer:

miss Akunina [59]3 years ago

3 0

I saw 180, 90, 45. That’s only because 360/8=45 so it’s symmetrical when rotated by a multiple of 45. Hope that helps

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Find an equation of the line that goes through the points (-9,-20) and (-8,-17). Write your answer in the form y = m x + b .

Oliga [24]

Answer:

y = 3x + 7

Step-by-step explanation:

First, we will solve for the slope (m).

The formula for slope is: m = $\frac{y2 - y1}{x2 - x1}$

m = $\frac{-17 - -20}{-8 - -9}$ --- enter the points into the formula

m = $\frac{3}{1}$ --- simplify

m = 3 --- simplify

Now we will solve for the y-intercept (b).

y = mx + b

y = 3x + b --- substitute the slope into the equation

-20 = 3(-9) + b --- substitute the x and y of either point into the equation

-20 = -27 + b --- simplify

7 = b --- add 27 to both sides

b = 7

Done.

y = 3x + 7

4 0

3 years ago

House contents insurance is charged at the rate of $4.50 per thousand dollars worth of the contents. How much is the insurance i

Makovka662 [10]

Answer:

188.5

Step-by-step explanation:

13 times 4.50 is 188.5 and theres 13,000

8 0

3 years ago

-(-3 / -2)= ???? I need help pleasee

icang [17]

Answer: -(-3 / -2)= ?

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

For every 5 apples that Sean picks, Ashley picks 9. Yesterday, they picked a combined total of 168 apples. How many apples did A

tia_tia [17]

Answer:

The number of apples that Ashley picks was $108\ apples$

Step-by-step explanation:

Let

x------> number of apples that Sean picks

y-----> number of apples that Ashley picks

we know that

$\frac{x}{y}=\frac{5}{9}$

$x=\frac{5}{9}y$ ------> equation A

$x+y=168$ -----> equation B

substitute equation A in equation B and solve for y

$\frac{5}{9}y+y=168$

$\frac{14}{9}y=168$

$y=168*9/14=108\ apples$

3 0

4 years ago

Misha and her cousin Darius made muffins for the Clark family reunion. Misha made 17 more muffins than Darius. Dark is made 56 m

VMariaS [17]

Answer:

Number of muffins per plate.

Step-by-step explanation:

We are given the following in the question:

Let x be the number of muffins made by Dark

Then, number of muffins made by Misha =

$x + 17$

For x = 56

Muffins made by Dark = x = 56

Muffins made by Misha =

$x + 17 = 56 + 17 = 73$

Total number of muffins =

$56 + 73 = 129$

Total number of plates = 12

Number of muffins on each plate =

$=\dfrac{\text{Total number of muffins}}{\text{Total number of plates}}=\dfrac{129}{12} = 10.75\approx 11$

Thus, there were approximately 11 muffins on each plate.

Thus, the unit of this problem is number of muffins per plate.

6 0

3 years ago