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Karo-lina-s [1.5K]
3 years ago
13

8.21 Divided by 7.8=19.1

Mathematics
1 answer:
Mumz [18]3 years ago
7 0

Answer: Not true

Step-by-step explanation:

8.21 /7.8

8.21 × 100 divided by 7.8 ×100

821/780

= 1.05

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How many times as much does each item cost in 2010 as in 1960 is the movie tix it tickets in 1960 costed $.75 in in 2010 cost 9.
Harrizon [31]
13 times i think
You just divide 9.75 by .75 and you get 13
8 0
3 years ago
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An ant travels at speed of 3 inches per second. How many feet will the ant travel in 2 hours?
GarryVolchara [31]

64,800 inches in 2 hours I think

6 0
3 years ago
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NEED HELP NOW I have 31 stamps total. I have 4 more 1-cent stamps than 8-cent stamps and twice as many one cent stamps as 12 cen
krek1111 [17]

x = number of 1-cent stamps

y = number of 8-cent stamps

z = number of 12-cent stamps

We have 31 stamps all together, so x+y+z = 31.

"I have 4 more 1-cent stamps than 8-cent stamps" means we have the equation x = y+8. Whatever y is, add 8 to it to get x. Solve for y to get y = x-8.

You also have "twice as many one cent stamps as 12 cent stamps", so x = 2z. Solving for z gets you z = 0.5x

-------------

x+y+z = 31

x+x-8+z = 31 ... y replaced with x-8

x+x-8+0.5x = 31 ... plug in z = 0.5x

2.5x-8 = 31

2.5x = 31+8

2.5x = 39

x = 39/2.5

x = 15.6

Your teacher made a typo somewhere because we should get a positive whole number result for x (since x is a count of how many 1-cent stamps we have).

8 0
3 years ago
WILL MARK YOU BRAINLIEST HELP ASAP
Marat540 [252]

Answer:

I believe it is c> 34

Step-by-step explanation:

Correct me if i'm wrong

6 0
2 years ago
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What is the area of the regular pentagon below?
wolverine [178]

Answer:

<em><u>2</u></em><em><u>1</u></em><em><u>y</u></em><em><u>d</u></em><em><u>^</u></em><em><u>2</u></em>

Step-by-step explanation:

join the centre to all the vertex,

since this figure is of regular pentagon, it's will form 5 equal triangle of equal area!

now area of one such triangle is

1/2 ×base ×height

=1/2 ×3.5x2.4 (yd^2)

=4.2 yd^2

now the pentagon is sum of 5 such equal triangle,so it's are will be

5×4.2 (yd^2)

=21 yd^2

✌️:)

7 0
3 years ago
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