3 years ago

Rotation 180 degrees about the origin.

Mathematics

1 answer:

Shalnov [3]3 years ago

6 0

Answer:

Take the picture you uploaded.

Click the rotate button twice.

Done

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1 ) During his morning commute to work in rush hour traffic, Justin's average speed was 30 mi/h. During his afternoon commute ba

Hitman42 [59]

Answer:45 mi/h

Step-by-step explanation:

Recall: Speed = distance / time

Let the time taken for the morning journey be $t_{1}$ and the time taken for the afternoon journey be $t_{1}$ ,and the distance covered be d

that means for the first journey,

30 = $\frac{d}{t_{1}}$

d = 30 $t_{1}$

Also for the afternoon journey,

d = 60 $t_{2}$

Equating the two , since the same distance is being covered , we have

30 $t_{1}$ = 60 $t_{2}$

that is

$t_{1}$ = $\frac{60t_{2}}{30}$

$t_{1}$ = 2 $t_{2}$

Also ,

total distance covered = 30 $t_{1}$ + 60 $t_{2}$

Average speed = total distance / total time

= 30 $t_{1}$ + 60 $t_{2}$ / $t_{1}$ + $t_{2}$

Recall that $t_{1}$ = 2 $t_{2}$ , substitute this into the formula for average speed , then we have

Average speed = 30(2 $t_{2}$ ) +60 $t_{2}$ / 3 $t_{2}$

Average speed = 120 $t_{2}$ / 3 $t_{2}$

Therefore :

Average speed = 40 mi/hr

4 0

3 years ago

At a garage sale books cost $1.50 each and musical

Novosadov [1.4K]

Answer:

$16

Step-by-step explanation:

4 books would cost $6 and 5 tapes would be $10. Add them to get 16.

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4 years ago

Read 2 more answers

Which type of line of symmetry does the figure have? <br>

9966 [12]

Answer:vertical

Step-by-step explanation:

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3 years ago

a ladder is 25ft long the ladder needs to reach to a window that is 24ft above the ground how far away from the building should

Wewaii [24]

By the Pythagorean Theorem:

24^2+d^2=25^2

576+d^2=625

d^2=49

d=√49

d=7 ft

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3 years ago

Mr. Samson deposited $80 into his checking account. Then after writing a $23 check for gas and a $90 check for his child’s dayca

Kaylis [27]

$100?
100+80=180
180-23=157
157-90=67
Hope this helps !

6 0

3 years ago

Rotation 180 degrees about the origin.​

Rotation 180 degrees about the origin.