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Murrr4er [49]
3 years ago
14

Help me solve this problem please

Mathematics
1 answer:
Travka [436]3 years ago
3 0

Answer:

The second one .......

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Solve 6x + 6 = 2x + 13
azamat

Answer:

x=1.75

Step-by-step explanation:

6x+6=2x+13

-6

6x=2x+7

-2x

4x=7/4

7 0
3 years ago
What is the area of a triangle<br> A=77mm<br> B=5.9mm<br> C=9.7mm
USPshnik [31]
Area = 1/2 base multiplied by height. I don't think you have the right dimensions. :(
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4 years ago
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If 25 cm' of a quantity of marbles has a mass of 45 g, calculate the density of the marble in kg/m​
Elena-2011 [213]

The density of the marble will be "0.18 kg/m³".

According to the question,

Volume of marbles,

  • V = 25 cm³

By converting it into m, we get

  • 0.25 m³

Mass,

  • M = 45 g

By converting it into kg, we get

  • 0.045 kg

As we know, the formula:

→ Density = \frac{Mass}{Volume}

By substituting the values, we get

→               = \frac{0.045}{0.25}

→               = 0.18 \ kg/m^3  

Thus the answer above is correct.

Learn more about density here:

brainly.com/question/15553857

7 0
3 years ago
If y varies jointly as x and z and y = 12 when x = -2 and z=3, find y when x is 4 and z is -1
jeka57 [31]

Answer:

D. 8​

Step-by-step explanation:

y varies jointly as x and z

y = k(xz)

-------------------------

Find k, the constant of variation

y = 12 when x = -2 and z=3

12 = k(-2 * 3)

12 = k(-6)

k = -2

-------------------------

find y when x is 4 and z is -1

using k = -2

y = -2(4 * -1)

y = -2(-4)

y = 8

8 0
3 years ago
What is 77,543 rounded to the nearest ten?
Montano1993 [528]
77,543 rounded to the nearest ten is 77,540
6 0
3 years ago
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