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3 years ago

Alexis washes 10 1/2 windows in 3/4 hours. At this rate, how many windows can she wash in an hour

Mathematics

1 answer:

torisob [31]3 years ago

6 0

Answer:

13 windows

Step-by-step explanation:

10 1/2 divided by 3/4=13.6666666667

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Nadia is investigating rotations about the center of regular polygons that carry the regular polygon onto itself. She claims tha

GalinKa [24]

Answer:

$\theta_1 \ n\ \theta_2 = 120, 240$

Step-by-step explanation:

The question is incomplete, as the angles of rotation are not stated.

However, I will list the angles less than 360 degrees that will carry the hexagon and the nonagon onto itself

We have:

$Nonagon = 9\ sides$

$Hexagon = 6\ sides$

Divide 360 degrees by the number of sides in each angle, then find the multiples.

Nonagon

$\theta = \frac{360}{9} =40$

List the multiples of 40

$\theta_1 = 40, 80, 120, 160, 200, 240, 280, 320$

Hexagon

$\theta = \frac{360}{6} =60$

List the multiples of 60

$\theta_2 = 60, 120, 180, 240, 300$

List out the common angles

$\theta_1 = 40, 80, 120, 160, 200, 240, 280, 320$

$\theta_2 = 60, 120, 180, 240, 300$

$\theta_1 \ n\ \theta_2 = 120, 240$

This means that, only a rotation of $120, 240$ will lift both shapes onto themselves, when applied to both shapes.

The other angles will only work on one of the shapes, but not both at the same time.

7 0

2 years ago

In these number grids, two numbers are added to give the number below.

lilavasa [31]

Answer:

11, 15, 20

Step-by-step explanation:

$there \: would \: be \: 11 \: between \: 4 \: and \: 9 \\ 4 + 11 = 15 \\ 11 + 9 = 20 \\ 20 + 15 = 35 \\ \: please \: rate \: brainliest$

5 0

1 year ago

Read 2 more answers

Express the product as a whole number. 312×28=

Monica [59]

The answer would be 8736

Hope this helps :)

3 0

2 years ago

Need help and make sure u explain ur answer

ArbitrLikvidat [17]

I think it is b because of the negative 2 so it have to go down

5 0

3 years ago

The final cost of a sale item is determined by multiplying the price on the tag by 75%. Which best describes the function that r

REY [17]

Answer:

It is linear because the ratio of the change in the final cost compared to the rate of change in the price tag is constant.

5 0

2 years ago

Read 2 more answers