3 years ago

1.5x10^8 divided by 5x10^4 = 3x10^?

Mathematics

1 answer:

Brilliant_brown [7]3 years ago

8 0

Need to explain more as this doesn’t make sense on a calculator.

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You buy a shirt that costs $9.95. With tax, you pay $10.65. Write and solve an equation to find the amount of tax x you paid.

OleMash [197]

The simplest way to do an equation like this is to take the number 10.65 and subtract 9.95 equaling 0.70 cents.
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3 years ago

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Grace [21]

Answer:

(-11,-8)

Step-by-step explanation:

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3 years ago

What value of g makes the equation tue (x+7)(x-4)=x^ 2+gx-28

Pie

Answer:

$\huge\boxed{g=3}$

Step-by-step explanation:

$(x+7)(x-4)=x^2+gx-28\\\\\text{Use}\ FOIL:\ (a+b)(c+d)=ac+ad+bc+bd\\\\(x+7)(x-4)=(x)(x)+(x)(-4)+(7)(x)+(7)(-4)\\\\=x^2-4x+7x-28=x^2+3x-28\\\\x^2+3x-28=x^2+gx-28\\\\\begin{array}{ccc}x^2&3x&-28\\\downarrow&\downarrow&\downarrow\\x^2&gx&-28\end{array}\Rightarrow g=3$