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olga55 [171]
2 years ago
11

A submarine is only allowed to change its depth by rising toward the surface in 60-meter stages. It starts off at -340 meters. A

t what depth is it after 1 stage?
Mathematics
1 answer:
balu736 [363]2 years ago
3 0
-340 + 60 = -280 meters
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Choose one <br> Help me please
AfilCa [17]

Answer:

A

Step-by-step explanation:

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4 0
2 years ago
If 3 is added to a number and multiplied the result by 5 gives 55 what is the number​
MakcuM [25]

Answer:24

Step-by-step explanation:Let the number we seek be X.

We are Given:

1). (5X+3 ) x (2) = 30

Expand and Rearrange.

(10X +6 ) = 30.

10X = 24.

2). X equals 2.4 . This is the answer for the number we seek.

Always check the answer.

This is Good Working Practice ALWAYS.

For Exams or similar remember:

Presentation (Neat & Tidy), Method & Layout (Show you understand), Accuracy.

All these count in most exams.

The first two points help greatly if your Answer is in error, but your METHOD Is CLEAR & CORECT.

Similarly, if the Check is wrong, mention this, but also, if the case, mention e.g. time ran out .. You may be credited as AWARE if your presentation and Method show you understood what to do and why.

CHECK: Substitute the answer for X into the original equation 1).

Equn. 1). (5X +3)*2 = 30.

Put in the value for X. Expand & Re-arrange.

(( 5 ).( 2.4 ) + ( 3 ).( 2 ) = 30.

( 12 + 6 ) = 30.

24 = 24. Checked & Agreed.

That’s about it.

6 0
2 years ago
4 mm
Schach [20]

Answer:

Area  =  40mm

Example:

The below-solved example problem may be useful to understand how the values are being used in the mathematical formulas to find the trapezoid area.

Example Problem :

Find the area of a trapezoid having the bottom length a = 15 cm, top length b = 12 & height h = 9 cm?

Solution :

The given values

bottom length a = 15 cm

top length b = 12 cm

height h = 10 cm

Step by step calculation

formula to find area = ((a + b)/2) h

substitute the values

= ((15 + 12)/2) x 9

= 121.5 cm2

7 0
3 years ago
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mylen [45]
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8 0
3 years ago
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Nikitich [7]

7.25 until 8.00 = 35 minutes

8.00 until 3.00 PM =  7 hours

3.00 until 3.15 = 15 minutes

Answer is 7 hours 50 minutes

7 0
3 years ago
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