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3 years ago

6

Explain how you know whether to add or subtract when you use the Distributive Property to multiply.

1 answer:

kaheart [24]3 years ago

4 0

Ex.

(4 x 4) + (4 x 2) = 24
16 + 8

So, how did I know how to add these two? Well, using PEMDAS (Parenthesis, Exponent, Multiplication, Division, Addition, Subtraction) we know whatever's in the parenthesis is what we do first. Since we have to sets of multiplication problems in parenthesis, we can solve either one first, but still regarding the rule of PEMDAS. Make notice of the + sign (bold) in between the two parenthesis. This tell me I will add the two products and get my final answer. But let's say it were the be subtraction oppose to addition.

Ex.

(4 x 4) - (4 x 2) = 8
16 - 8

Using PEMDAS, I did the parenthesis first. I knew to subtract because of the - sign in the equation, leading to my difference.

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4 years ago

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Mariana [72]

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3 years ago

Which statement is true about the extreme value of the given quadratic equation? y = -3x2 + 12x − 33

Zina [86]

Answer:

The equation has a maximum value with a y-coordinate of -21.

Step-by-step explanation:

Given

$y =-3x^2 + 12x - 33$

Required

The true statement about the extreme value

First, write out the leading coefficient

$Leading = -3$

$-3 < 0$ means that the function would be a downward parabola;

Downward parabola always have their vertex on top of the parabola and as such, the function has a maximum value.

The maximum value is:

$x = -\frac{b}{2a}$

Where:

$a= -3; b =12; c =-33$

So, we have:

$x = -\frac{12}{2 * -3}$

$x = -\frac{12}{-6}$

$x =2$

Substitute $x =2$ in $y =-3x^2 + 12x - 33$

$y = -3*2^2 + 12 * 2 - 33$

$y = -21$

<em>Hence, the maximum is -21.</em>

8 0

3 years ago

:D What is 10/200 x 3,000? <br><br>( ten to the power of 200)

kotegsom [21]

Answer:

$3\cdot10^{203}$

<em />

<em>That's literally it- it won't show me the actual number xD</em>

<em />

<em>Hope this helps :]</em>

<em />

6 0

2 years ago

Read 2 more answers

What is 1 + 1 x 0 - 1

strojnjashka [21]

Answer:

-1

Step-by-step explanation:

1+1=2 then times that by 0 which gives you 0 then -1 the one gives you minus 1

3 0

3 years ago