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OLEGan [10]
2 years ago
14

David and Mark are marking exam papers. Each set takes David 61 minutes and Mark 1 hour. Express the times David and Mark take a

s a ratio in its simplest form.
Mathematics
1 answer:
Mamont248 [21]2 years ago
5 0
Do you know how to change the 1 hour to minutes
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Two jets leave an air base at the same time and travel in opposite directions. One jet travels 94 mi/h slower than the other. If
maw [93]

Answer:

1478 mi/h  

Step-by-step explanation:

The rate of change is the distance divided by the time.

\text{Rate of change} = \dfrac{\text{distance}}{\text{time}} = \dfrac{\text{2956 mi}}{\text{2 h}} = \textbf{1478 mi/h}

4 0
3 years ago
Find the amount of the annuity.
Montano1993 [528]
The formula of the future value of annuity ordinary is
Fv=pmt [(1+r/k)^(kn)-1)÷(r/k)]
Fv future value?
PMT payment 6200
r interest rate 0.06
K compounded semiannual 2
N time 5 years
Fv=6,200×(((1+0.06÷2)^(2×5)) ÷(0.06÷2))=277,742.72

Hope it helps
5 0
3 years ago
A solid cylinder of radius 7cm is 10cm long.find it's total surface area
Anton [14]

Answer:

C.  238π  cm^3.

Step-by-step explanation:

Surface area = 2 * area of the circular ends + area of the curved length

= 2π r^2 + 2π r* l

= 2 π 7^2 + 2π 7 * 10

= 98π + 140π

= 238π  cm^3.

7 0
3 years ago
Read 2 more answers
Find the value of n. 4 × 62 = (4 x n) + (4 × 2)
tino4ka555 [31]
The answer is 1000 because 62x4= 248 and then you take 248 and multiply it by 4 and you get 992 then you have to multiply 4x2 which is 8 and then when you add 992+8, you would get 100 ;)
7 0
3 years ago
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4/6x - 2/3 = 4 - 8/7x solve
Butoxors [25]

X=49/19


good luck aaa!!!

5 0
3 years ago
Read 2 more answers
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