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saul85 [17]
3 years ago
8

a submarine travels 90 kilometers in 4 hours find the submarines rate of speed in kilometers per hour

Mathematics
1 answer:
defon3 years ago
6 0

Answer:

22.5

Step-by-step explanation:

To find the rate of speed per hour, you need to divide the kilometer (90) by the hours (4).

90/4=

22.5

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Consider the following triangle side lengths and determine if the triangle could exist. Justify your answer. Part A: 21,18,17 Pa
Misha Larkins [42]

Answer:

A yes, B no

Step-by-step explanation:

The triangle inequality states that the sum of any 2 sides of the triangle must be greater than the third side.

A Given 21, 18, 17 , then

21 + 18 = 39 > 17

21 + 17 = 38 > 18

18 + 17 = 35 > 21

Thus the triangle could exist

B Given 3, 12, 8 , then

3 + 12 = 9 > 8

3 + 8 = 11 < 12 ← fails the test

Thus the triangle does not exist

7 0
3 years ago
Luke buys a certain brand of cereal that costs $11 per box. Luke changes to a super-saving brand of the same size. The equation
Mkey [24]

Answer:

Part A:

Luke's original box of cereal costs $2 more than the super-saving brand.

y=9(1) 

y=9

11-9=2

Part B:

y=9(6)

y=54

11x6=66

66-54=12

Luke saves $12 each month if he buys 6 boxes of the super-saving brand. 

pls mark brainliest

8 0
3 years ago
Please help me <br><br> (3x^7-5x^5+10x^3-4x^2+1) divided by (x^2-18) is
bagirrra123 [75]

Answer: (3x^7-5x^5+10x^3-4x^2+1)÷(x^2-18)= 5x^1÷-9

4 0
3 years ago
Find the value of the expression.<br>b2 − a <br>for a = 4 and b = 5​
motikmotik
If a = 4 & b = 5 then we plug this in the expression; (5) • 2 - (4)
using PEMDAS we solve the 5• 2 first
10 - 4
6 is the answer!
hope this helps :)
8 0
3 years ago
Julio says, "If you subtract 14 from my number and multiply the difference by
marusya05 [52]

Answer:

20

Step-by-step explanation:

20 - 14= 6

6 * -3= -18

4 0
3 years ago
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