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Neporo4naja [7]
3 years ago
15

7(square root 14) divided by (square root 7)

Mathematics
1 answer:
Blababa [14]3 years ago
4 0

The question given above will require a good understanding of surd operation in order to arrive at the best answer

\frac{7\sqrt{14} }{\sqrt{7}} = 7\sqrt{2}

To solve this problem, we shall simply rationalise the denominator. This can be obtained as illustrated below:

\frac{7\sqrt{14}}{\sqrt{7}}\\\\Rationalise\\\\\frac{7\sqrt{14}}{\sqrt{7}} * \frac{\sqrt{7} }{\sqrt{7}}\\\\\frac{7\sqrt{14*7}}{\sqrt{7*7}}\\\\\frac{7\sqrt{98}}{\sqrt{49}}\\\\\frac{7\sqrt{98}}{7}\\\\\sqrt{98}\\\\\sqrt{98} = \sqrt{49*2} \\\sqrt{98} = \sqrt{49} * \sqrt{2} \\\sqrt{98} = 7\sqrt{2} \\\\Thus, \\\\\frac{7\sqrt{14}}{\sqrt{7}} = 7\sqrt{2}

Therefore, from the calculations made above, the solution to the question is  7√2

Learn more: brainly.com/question/11225829

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Answer:

a) £11.46

b) £8.54

Step-by-step explanation:

a) Ffion's Bill = £2.49 + 2(£3.99) + £0.99

= £2.49 + £7.98 + £0.99

= £11.46

b) Change Received = £20 - £11.46

= £8.54

5 0
4 years ago
Please solve step-by-step<br><br> 6c + 7 = 13 + 7c
RUDIKE [14]
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Read 2 more answers
The cost of cleaning up pollution in a stream is given by
anastassius [24]

Answer:

p must be less than 100

Step-by-step explanation:

Let

c ----> the cost in dollars to clean the stream

p ----> percent of the stream

we have

c=\frac{370,000}{100-p}

Remember that the cost cannot be a negative number

and

the denominator cannot be a zero

so

100-p > 0

Solve for p

Multiply by -1

-100+p < 0

Adds 100 both sides

p < 100

therefore

p must be less than 100

8 0
4 years ago
S
lorasvet [3.4K]

Answer:

A. 3:30 pm

Step-by-step explanation:

45 + 25 = 70 --> 1 hour 10 minutes

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7 0
3 years ago
a rectangle field has an anrea of 40cm^2. if one side of the field is 3m longer than the other side, find the new area of the fi
oksian1 [2.3K]

The area of the field where the length of each side is increased by 10% is 48.4 cm^{2}.

Step-by-step explanation:

The given is,

               A rectangle field has an area of 40 cm^{2}

               If one side of the field is 3 cm longer than the other side

               The length of new area in each side is increased by 10%

Step:1

          Let,

                          b - One side of rectangle

                          l - Other side of rectangle

          From given.

                         l -  b +3

           Formula for area of rectangle,

                   Area, a = lb      

                          40 = ( b+3) × b

                         40 = b^{2} + 3b

           Solving the above the equation,

                          b = 5 cm

                            l = 8 cm

Step:2

          If the area of rectangle increased by 10%,

                            l = 8 + ( 8 × \frac{10}{100} )

                              = 8.8

                           b = 5 + ( 5 × \frac{10}{100} )

                              = 5.5

         Area of rectangle is,

                      a = ( 8.8 × 5.5 )

                        = 48.4 square centimeters

Result:

        The area of the field where the length of each side is increased by 10% is 48.4 cm^{2}, if a rectangle field has an area of 40 square centimeters and one side of the field is 3 cm longer than the other side.

             

5 0
3 years ago
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