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alina1380 [7]
3 years ago
7

The total length of wires A,B and C is 445cm. Wire A is 45cm longer then wire B,and wire B is half as long as wire C. How long i

s wire A?
Mathematics
1 answer:
dolphi86 [110]3 years ago
5 0

Answer:

A = 145cm

Step-by-step explanation:

A+B+C = 445cm  

b = 1/2c

a = b+45  =  1/2c + 45

445 = c + (0.5c) + (0.5c + 45)

445 = 2c + 45

445 - 45 = 2c

400/2 = c

c = 200cm

a = 1/2c + 45 = 1/2*200 + 45 = 100 + 45 = 145cm

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Kenya has 2 hours to make a 104 mile trip. What rate must she average to make the trip in 2 hours? A) 50 mph B) 51 mph C) 52 mph
sattari [20]
C. 52 mph.
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3 years ago
It takes 1 hour (t) to fill the water tank of volume (V) 750 m3. Identify the dependent and the independent variables.
Natalija [7]

Answer:

The time t is the independent variable while the volume V is the dependent variable

Step-by-step explanation:

A variable is a parameter that changes.

We have two types namely dependent and independent variables.

A dependent variable is a variable which its value needs to be determined based on the value of another variable while and independent variable is a variable which its value independent of other parameters.

In our question, It takes 1 hour (t) to fill the water tank of volume (V) 750 m3.

The volume of the tank V changes as time changes. So the volume of the tank V is dependent on time, t.  

So V is proportional to t

Since the volume of the tank is the variable that needs to be determined based on another variable-which is time,t- it is the dependent variable, while the time,t is the independent variable since its value is not determined based on other parameters.

4 0
3 years ago
Solve the equation. Check your solutions.<br> |4b+4|=|2b+8|
anzhelika [568]

Answer:

<h2><u>b = 2 or b = -2</u></h2>

Explanation:

|4b + 4| = |2b + 8|

<em>Solve absolute value</em>

|4b + 4| = |2b + 8|

Either 4b + 4 = 2b + 8 or 4b + 4 = −(2b + 8)

4b + 4 = 2b + 8 <em>(Possibility 1)</em>

4b + 4 − 2b = 2b + 8 − 2b <em>(Subtract 2b from both sides)</em>

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2b = 4

2b / 2 = 4 / 2 <em>(Divide both sides by 2)</em>

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4b + 4 + 2b = −2b − 8 + 2b <em>(Add 2b to both sides)</em>

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6b + 4 − 4 = −8 − 4 <em>(Subtract 4 from both sides)</em>

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6b / 6 = -12 / 6 <em>(Divide both sides by 6)</em>

b = -2

<h2><u>b = 2 or b = -2</u></h2>
6 0
3 years ago
Avg these<br> 190258.50<br> 152698.00<br> 122753.00<br> 220523.00<br> 231951.00
Andre45 [30]
To get an average, you must do the following steps.

step 1:add all the numbers together.
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6 0
3 years ago
E - 867 = 108; E = need help
lina2011 [118]
To solve for E you'll add 867 to 108.

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Hope this helps :)

7 0
3 years ago
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