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Alex787 [66]
3 years ago
13

PLEASE ANSWER I WILL GIVE BRAINLIEST PLEASE ANSWER BOTH!!

Mathematics
1 answer:
garri49 [273]3 years ago
7 0

Answer:

t = 130s

Step-by-step explanation:

s = 3.9 * 10^{7} km

v = 3 * 10^{5} km/s

t = ?

t = \frac{s}{v}

t = \frac{3.9 * 10^{7} km}{3 * 10^{5}km/s }

t = 130 s

If the speed signal sent was actually less, meaning that it would take more time to signal arrives from Earth to Mars. The lower the speed, the higher the time.

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Nat2105 [25]
Free points rights anyways can someone help me with this answer

A 85-kg is clown is fired from rest out of 480-kg cannon. If the clowns speed is 18 meters per second after the firing, then what is the recoil speed of the cannon? (Round your answer to the nearest tenth)
8 0
3 years ago
I need help Pleaseeeee WILL GIVE BRAINLIEST
IrinaK [193]

Answer:

C.540 square cm

Step-by-step explanation:

The object is 6 times as big as the scale drawing. The area of the scaled object , to find the area of the object.. you have to multiply the area of the scaled object by the scale factor squared

15×6^2=15×36=540

The area of the object ia 540 square centimeters

5 0
3 years ago
if your teacher tells you to do questions 28 through 41 in your math book for homework, how many questions is that
katrin2010 [14]

Its 14.
30-40 is 11, 28-29 is 2, and 41 is 1.

5 0
3 years ago
Mary bought these art supplies: 4 paint brushes @ $1.29 each, 6 dowel rods @ $1.49 each, a jar of paste @ $1.25, and 2 canvases
Sophie [7]

Answer:

Option (1) is correct

The amount she receives back from $40 is  $12.65

Step-by-step explanation:

Given: Mary bought the art supplies.

4 paint brushes @ $1.29 each, 6 dowel rods @ $1.49 each, a jar of paste @ $1.25, and 2 canvases @ $6.00 each.

We have to find the change she get from $40.

We first find the total cost of the art supplies.

Since, she brought 4 paint brushes @ $1.29 each,

Thus, cost of 4 paint brush is  1.29 × 4 = $5.16

Also, 6 dowel rods @ $1.49 each,

Thus, cost of 6 dowel rods is  1.49 × 6 = $8.94

Thus, cost of 1 jar of paste  is $1.25

and 2 canvases @ $6.00 each

Thus, cost of 2 canvases  is $12.00

Thus, total cost of art supplies = 5.16 + 8.94 + 1.25 + 12 =$27.35

Thus, amount she receives back from $40 is $40 - $12.35 = $12.65

4 0
3 years ago
Read 2 more answers
Write 3.554 as a percent
tatiyna

Step-by-step explanation:

0.03554%.............

6 0
3 years ago
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