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xenn [34]
2 years ago
15

HELP ASAP I DONT WANNA FAIL

Mathematics
2 answers:
PtichkaEL [24]2 years ago
7 0

Answer: the third one

Step-by-step explanation:

vitfil [10]2 years ago
6 0

Answer:

2 x 10^16

Step-by-step explanation:

1.3 x 10^-4 x n = 2.6 x 10^12

(1.3 x 10^-4 /1.3 x 10^-4) x n = 2.6 x 10^12/1.3 x 10^-4

n = 2 x 10^16

When dividing, subtract your exponents.

12 - (-4) = 16

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Answer question 8,9 and 10 with full details.
Lelechka [254]

Answer:

See Explanation

Step-by-step explanation:

8. (1)

Area of trapezoid = 1/2(sum of || sides) *perpendicular distance

36 =1/2(x+ y) * 6

36 = ((x + y)*3

36/3 = x + y

12 = x + y

x + y = 12.... (1)

8(2)

It is given that:

x = 2y....(2)

From equations (1) & (2)

2y + y = 12

3y = 12

y = 12/3

y = 4

From equation (2)

x = 2y = 2*4

x = 8

9.

Area of square = 1 square m

Side of square = 1 m

Area of circle = 1 square m

\pi {r}^{2}  = 1 \\  {r}^{2}  =  \frac{1}{\pi}  \\ r =  \frac{1}{ \sqrt{\pi} }  \\ c = 2\pi \: r \\ c = 2\pi \times  \frac{1}{ \sqrt{\pi} }  \\ c = 2 \sqrt{\pi}  \\ c = 2 \sqrt{3.14}  \\ c = 2 \times 1.77200451 \\ c = 3.54400902 \\ c = 3.544 \\ difference = 3.544 - 1 = 2.544  \\difference \approx \: 2.54

4 0
3 years ago
Plz help! (due tonight!)
Vilka [71]

Answer:

There will be 9 couples, and 3 lonely girls

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3 years ago
David was trying to sleep one night but there was too much noise around him? His clock ticked every 5 seconds , a tap was drippi
Monica [59]

Answer:

A) 420 seconds = 7 minutes

B) 8 times

Step-by-step explanation:

A) After how many second would all three things happen together again?

Solution:

His clock ticked every 5 seconds , a tap was dripping every 7 seconds and     his pet dog snored every 12 seconds. It all happens simultaneously = 5*7*12=420 seconds

B) How many times would all three things happen together again between    midnight and one o'clock

Since all these events happen together after every 420 sec = 7 mins and there are 60 mins between midnight and 1 o'çlock , thus 60/7 = 8 times ....

7 0
3 years ago
The Bowman family has $215,322 in assets and $182,009 in liabilities. What
drek231 [11]
397,331 is how much they are worth
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3 years ago
A conference planner has put together 280 binders for attendees and another 31 binders for presenters.how many total binders did
Ede4ka [16]

Answer:

311

Step-by-step explanation:

280 + 31 = 311

3 0
3 years ago
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