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3 years ago

Answer Yes or No and explain why in one sentence.(click the picture)

Mathematics

2 answers:

Lilit [14]3 years ago

8 0

Yes, because there are common factors in the equation. therefore showing you can group

ycow [4]3 years ago

3 0

To add or subtract with exponents, the variables and the exponents of the variables must be the same, therefore you cannot group them. However, if you were multiplying the numbers, you'd be able to group them.

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What is the factored form of the expression? d^2 = 36d + 324

Veseljchak [2.6K]

Answer:

$(x-43.45)(x+7.45)=0$

Step-by-step explanation:

We have the quadratic equation $d^{2}=36d+324$ i.e. $d^{2}-36d-324=0$

As, the roots of the quadratic equation $ax^{2}+bx+c=0$ are given by $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$ .

So, from the given equation, we have,

a = 1, b = -36 , c = -324.

Substituting the values in $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$ , we get,

$x=\frac{36\pm \sqrt{(-36)^{2}-4\times 1\times (-324)}}{2\times 1}$

i.e. $x=\frac{36\pm \sqrt{1296+1296}}{2}$

i.e. $x=\frac{36\pm \sqrt{2592}}{2}$

i.e. $x=\frac{36\pm 50.9}{2}$

i.e. $x=\frac{36+50.9}{2}$ and $x=\frac{36-50.9}{2}$

i.e. $x=\frac{86.9}{2}$ and $x=\frac{-14.9}{2}$

i.e. x = 43.45 and x = -7.45

Thus, the roots of the equation are 43.45 and -7.45.

Hence, the factored form of the given expression will be $(x-43.45)(x+7.45)=0$

3 0

2 years ago

Willis bought a gallon of paint.He painted a wall that is 9 feet high and 10 feet wide.Then he used he rest of the paint to pain

Otrada [13]

First you need to find the surface area of the wall that was painted, and then add the additional area in the hallway that was painted.

The wall that was painted was 9 feet by 10 feet, or 90 square feet. 90 square feet plus the additional 46 square feet in the hallway is 136 square feet, which is the total area that the paint covered.

Therefore the solution is 136 square feet.

7 0

2 years ago

Read 2 more answers

How to make this y=21x-7 into standard form

Galina-37 [17]

The standard form is 21x-y-7=0

6 0

3 years ago

Help please! Thanks

SSSSS [86.1K]

Answer:

E. 0

Step-by-step explanation:

There isn't any guarantee that there are any people that have their birthdays in the same month based on what you're given, so your answer would be 0.

8 0

2 years ago

If b = 3, then b ^-2 is equivalent to 9 09 -6 01

Anni [7]

Answer:

1/9 = 0.11111111 ( infinite )

Step-by-step explanation:

4 0

2 years ago