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3 years ago

A square has a side of 6.25 feet. What is the area in square feet? Round to the correct significant digits.

1 answer:

4 0

The answer for this question, to the correct significant digits, would be 39 feet squared. This can be worked out in the following way: S=a*a ft^2S=6.25*6.25S=39.0625?39.1 9and then round this up to find the answer of 39 square feet)

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2.) What value for c will make the expression a perfect square trinomial?

andre [41]

Answer : $\frac{49}{4}$

Given expression is $x^2 - 7x + c$

To make perfect square trinominal we use completing the square method

In completing the square method we add and subtract the half of square of coefficient of middle term

Here coefficient of middle term is -7

Half of -7 is $\frac{-7}{2}$

Square of $\frac{-7}{2}$ is $(\frac{-7}{2})^2$ = $\frac{49}{4}$

So the expression becomes $x^2 - 7x + [tex] \frac{49}{4}$ that gives perfect square trinomial

Hence , the value of 'c' is $\frac{49}{4}$

6 0

3 years ago

Read 2 more answers

What is a like term for 6x

Helen [10]

Answer:

ANY NUMBER THAT HAS A X BEHIND IT..

Examples

15803x

104762836297x

8 0

3 years ago

Factor completely x2 - 16y2

Y_Kistochka [10]

Answer:

(x+4y)(x-4y)

Step-by-step explanation:

Since

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

we can see that

$\large x^2-16y^2=(x+4y)(x-4y)$

3 0

3 years ago

3x^2-5=43 how do i solve this using the square root property

slava [35]

Answer:

x = 4

x = -4

Step-by-step explanation:

bro i dont know but i hope this help a little, sorry

4 0

3 years ago

Increase 14187.13 by 4.5%

Ksivusya [100]

If you increase a number by 4.5%, then you're adding 4.5% of that number to 100% of that number. So essentially you just multiply 14187.13 by 104.5%, or 1.045 to find the answer, which is 14,825.55.

7 0

3 years ago