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hjlf
4 years ago
13

Help me with question8 plz aSAP ASAP

Mathematics
1 answer:
olga_2 [115]4 years ago
6 0
A) the slope of distance vs time is speed:

i) from 09:00 to 09:11 it is increasing velocity positively and steadily by going away from the origin.

ii)  the car speeds up by going away from the origin with constant velocity.

iii) the car does not have any movement stationary in 9m.

iv) it car is dropping speed, going toward the origin.

b) distance= 9m+6m=15m

c) i) slope= velocity= (9-0)/(24)= 3/8 km/h

ii) velocity = (6-4)/(19)=2/19 km/h


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Two airplanes are carrying food and medical supplies to a country in need. One airplane is carrying 63 meals and 57 medical kits
Tju [1.3M]

Answer:

63m + 57k = 714 ____________ (1)

78m + 57k = 789 ____________(2)

The price of one meal is $5

Step-by-step explanation:

Let the price of one meal be m.

Let the price of one medical kit be k.

One airplane is carrying 63 meals and 57 medical kits and the total cost for those supplies on that airplane is $714.

This means that:

63m + 57k = 714 ____________ (1)

The other airplane is carrying 78 meals and 57 medical kits and the total cost for the supplies on that airplane is $789.

This means that:

78m + 57k = 789 ____________(2)

We now a system containing two linear equations that can be used to solve to problem:

63m + 57k = 714 ____________ (1)

78m + 57k = 789 ____________(2)

To find the price of one meal, we subtract equation (1) from (2) and simplify:

 78m + 57k = 789

<u>- 63m + 57k = 714 </u>_

  15m  = 75

=> m = 75 / 15 = $5

The price of one meal is $5

6 0
3 years ago
What is x+8y=-15 7x+8y=-19
lisabon 2012 [21]
You would subtract the x and move it over to the other side so your equation would be
8y= -15 + x
you would then divide everything by 8 so you can have y on its own so it would be
y= -15/8 + x/8
so your final equation is
y=-15/8 +8x

for the second equation it’s the same thing, you subtract 7x
8y= -19 + 7x
divide by 8
y= -19/8 +7/8x
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3 years ago
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3 years ago
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Vika [28.1K]
38 is 10 more than 1/3 of 21
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3 years ago
Which statement is true? The product of 8/3 and 6/5 is greater than 8/3
3241004551 [841]

Answer:

The product of 8/3 and 6/5/is greater than 8/3.

Step-by-step explanation:

(8/3)*(6/5) = (8*6)/(3*5) = 48/15

16/5. = 3.2 and 8/3 = 2.7

5 0
3 years ago
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