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3 years ago

7

98 - 5q for q = 7 help

2 answers:

ruslelena [56]3 years ago

6 0

63.

98-5q
plug 7 in and take out q
98- 5×7
follow pemdas. multiplication and division go before adding and subtracting, m and d are before a and s in pemdas.

5×7= 35

98-35=
63

Molodets [167]3 years ago

3 0

you have to multiply the 5 and the 7 and you get 35 then subtract 98 and 35 and you get 63

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liraira [26]

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3 years ago

Which number line represents all of the values of x for the equation x2 = 16? A number line is shown from negative 10 to 0 to po

Svetllana [295]

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3 years ago

What is the factored form of the expression?<br><br> 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

3 years ago

Anyone know the answer??

marissa [1.9K]

The answer should be C.

5 0

3 years ago

Read 2 more answers

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Feliz [49]

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3 years ago