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Ber [7]
3 years ago
7

How do I do these 2 questions

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
3 0

Q10/

6 m/s = 21.6 km/h

6m/s =3.6 × 6 = 21.6 km/h

** 1m/s = 3.6 km /h

1 \frac{m}{s}  =  \frac{1}{1000} km \times  \frac{60s}{1 \: min}  \times  \frac{60 \: min}{ 1\: h}  \\  \\  =  \frac{1}{1000} \times  \frac{3600}{1}  \\  \\   = \frac{3600}{1000}  = 3. 6\: km/h

Q14/

7x -1 =3x+7

7x - 3x = 7 +1

4x =8

x = 8/4

x =2

I hope I helped you^_^

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Answer:

-1,3,5,9is a required answer.

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3 years ago
Simplify t^12/t^6 help!
meriva

t^{12}/t^6=t^{12-6}=t^6

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A dog breeder plans to mix two types of food to make a mix of low cost
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Answer:

  • 3.75 bags of ChowChow
  • 0.75 bags of Kibble

Step-by-step explanation:

The constraints on protein, minerals, and vitamins give rise to the inequalities ...

  40c +30k ≥ 150 . . . . . . required protein

  20c +20k ≥ 90 . . . . . . required minerals

  10c +30k ≥ 60 . . . . . . . required vitamins

And we want to minimize 10c +12k.

The graph shows the vertices of the feasible region in (c, k) coordinates. The one that minimizes cost is (c, k) = (3.75, 0.75).

To minimize cost, the daily feed should be ...

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5 0
3 years ago
Georgia is 7 years younger than 5 times the age of her daughter, Veronica. Veronica will be 14 in 6 years. Part A
kobusy [5.1K]

Answer:

Veronica's age now =8 years

Step-by-step explanation:

Veronica's age now = x years

Georgia's age now = 5x  - 7

Veronica age after 6 year = 14

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4 0
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Answer:

The minimum number of letters John has to send to be sure that Peter receives his letter is 127 letters

Step-by-step explanation:

The four digit numbers that are multiples of 5 and 7 with the last digit = 0 is found as follows  

Since the last digit of the house number = 10, then the house number is divisible by 10 which also meets the condition that the house number is divisible by 5

We have the four digit numbers from 1000 to 9999

Hence the numbers divisible by both 7 and 10 are from (1000/70 (Which is 14 + 2/7) - 2/7)×70 + 70 = 1050 to (9999/70 (Which is 142 + 59/70)- 59/70)×70= 9940

Which gives 142 - 15 =  127 numbers which are four digit number multiples of 5 and 7 with the last digit = 0

Hence the minimum number of letters John has to send to be sure that Peter receives his letter = 127 letters.

5 0
3 years ago
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