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saul85 [17]
2 years ago
8

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

Mathematics
1 answer:
defon2 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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Please answer number 10 I’ll give brainliest thank you!
monitta
I think it's 7 hope its right sorry if not
5 0
2 years ago
Which of the following represents the sum of the series? 6 8 10 12 14 16 18 20 22 24 26
stira [4]

The sum of the arithmetic series 6 8 10 12 14 16 18 20 22 24 26 is 176

<h3>How to determine the sum of the series?</h3>

The series is given as:

6 8 10 12 14 16 18 20 22 24 26

The above series is an arithmetic series with the following parameters:

First term, a = 6

Last term, L = 26

Number of terms, n = 11

The sum of the series is calculated using:

S_n= \frac{n}{2} *(a + L)

This gives

S_n= \frac{11}{2} *(6 + 26)

Evaluate

S_{11} = 176

Hence, the sum of the arithmetic series 6 8 10 12 14 16 18 20 22 24 26 is 176

Read more about arithmetic series at:

brainly.com/question/6561461

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7 0
2 years ago
EASY MATH PLEASE HELP!<br><br> I WILL GIVE BRAINLIEST!<br><br> QUESTION: Find the area.
Verdich [7]

Answer:

14yd^2

Step-by-step explanation:

6 0
3 years ago
What is the product (9t-4)(-9-4)
Scrat [10]

Answer:

-81t^2 +16

Step-by-step explanation:

(9t-4)(-9t-4)

FOIL

first: -9t*9t = -81t^2

outer : -4*9t = -36t

inner : -4 *-9t = 46t

last = -4*-4 = 16

Add them together

-81t^2 -36t+36t+16

-81t^2 +16

6 0
2 years ago
Which of the following number sentences is an example of the associative property of multiplication?
sertanlavr [38]

Answer:

Option C and D are examples of associative property of multiplication.

Option A is examples of commutative property of multiplication.

Option B is normal multiplication.

Hope this helps!

:)

3 0
3 years ago
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