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3 years ago

HELP PLEASEEE I NEED HELP QUICK

Mathematics

2 answers:

goldfiish [28.3K]3 years ago

8 0

Answer:

Step-by-step explanation:

The Perfect Squares are the squares of the integers

Perfect square trinominal is: a² ± 2ab + b² {which is (a±b)²}

So:

The first and third terms must be perfect squares and neither of the perfect squares can have a minus sign and If the perfect square terms are A2 and B2 then the other term must be 2AB or -2AB

madam [21]3 years ago

7 0

Answer:

C) If the perfect square terms are A^2 and B^2 and other terms must be 2 AB and -2AB

Step-by-step explanation:

As,

$(a^2+2ab+b^2)=(a+b)^2\\(a^2-2ab+b^2)=(a-b)^2$

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Which statement is correct?

boyakko [2]

Answer:

The A option is correct.

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4 years ago

Here is a retangle ABCD the length of the rectangle is incresed by 10% the width increased by 5%

gladu [14]

Answer:

the ans:

Step-by-step explanation:

The percentage increase in the perimeter of the rectangle is 6.67 %.

Percentage :

A percentage is a number or ratio that can be expressed as a fraction of 100.

The length of the rectangle is increased by 10% ,

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If initial length of rectangle is 10 then new length of rectangle will be 11 unit.

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If initial width of rectangle is 20 then new width of rectangle will be 21 unit.

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4 0

3 years ago

1.The school library had a used book sale. Paperback books were 25 cents each, and hardcover books were $1.25 each. There were 5

KatRina [158]

.25x54=13.5 163x1.25=203.75 13.5+203.75=217.25

4 0

4 years ago

If f(x) = 25 -x^2 and g(x) = x + 5, what is (f/g)(x)? <br>Write your answer in the simplest form.

nikdorinn [45]

Answer:

Step-by-step explanation:

We are asked to divide the first equation f(x) by the second equation g(x) and then multiply the division by x

We will be using the difference of two squares to solve this question somewhere in the process

(f/g) * x

(25-x^2) / (x+5) * x

Check the attachment for detailed solution

4 0

4 years ago

Matt is canoeing on Lake opeongo fighting a headwind. it takes him 2 hours to get to the lake 4km away. on the way back it takes

Mariana [72]

So Matt is canoeing on a Lake.

It took him 2 hours to get to the lake 4 kilometers away.

On the way back it takes him 90 minutes.

Now, lets say that he is canoeing at 'u' miles per hour and lets assume that the speed of the wind is 'v' miles per hour.

While he sails in opposite to the wind net speed is given by $u-v$ .

Using the relation between distance, time, and speed we get:

$u-v=\frac{4}{2} =2$ kilometers per hour so we get,

$u-v=2$ ..............(equation 1)

Now when he sails along the wind, the net speed is given by $u+v$

Now, again use the same relation as stated above we get:

$u+v=\frac{4}{1.5} =2.6$ (here we have converted 90 minutes into hours $\frac{90}{60} =1.5$ )

$u+v=2.6$ ..............(equation 2)

Solving equation 1 and 2 we get:

$u=2.3$ , putting the value of 'u' in equation 1 we get $v=2.6-2.3=0.3$ .

So the speed at which Matt is canoeing is 'u' that is 2.3 kilometers per hour and the wind is flowing at 0.3 kilometers per hour.

So Matt can canoe at 2.3 kilometers per hour without wind. And wind is slowing him down by 0.3 kilometer per hour.

3 0

3 years ago