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3 years ago

Write an equivalent expression for 5(2x + y - 3z) by modeling and using the distributive property.

Mathematics

2 answers:

docker41 [41]3 years ago

7 0

Answer:

$10x + 5y - 15z$

Step-by-step explanation:

$5(2x + y - 3z)$

To get the equivalent expression we apply distributive property

a(x+b)= ax+ab

Using distributive property we distribute the number inside the parenthesis Distribute 5 inside the parenthesis

5 times 2x becomes 10x

5 times y becomes 5y

5 times -3z becomes -15z

$5(2x + y - 3z)$

$10x + 5y - 15z$

soldi70 [24.7K]3 years ago

5 0

The answer is 10x + 5y - 15z

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Whoops i forgot to read the lesson :P 30 points

andriy [413]

Step-by-step explanation:

I'll do 2.

Alright,Alex let say we have factored a quadratic into two binomial, for example

$(5x + 3)(6x - 4)$

If we set both of those equal to zero

$(5x + 3)(6x + 4) = 0$

We can used the zero product property in this case to find the roots of the quadratic equation.

This means that

$if \: ab = 0 \: then \: a = 0 \: and \: b = 0$

This means we set each binomal equal to zero to find it root.

$5x + 3 = 0$

$5x = - 3$

$x = - \frac{3}{5}$

$6x + 4 = 0$

$6x = - 4$

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

So our roots are negative 3/5 and negative 2/3 using zero product property

6 0

3 years ago

42 is 6 times as many as

egoroff_w [7]

Wouldnt it be 7 bc 7*6 is 42

5 0

3 years ago

Read 2 more answers

What is the vertex of the function (X) = -x + 71 - 4?

4vir4ik [10]

Answer:

Step-by-step explanation:

f(x) = -x + 71 - 4 is a straight line. It does not have a vertex.

7 0

3 years ago

Last week, the price of cherries at the corner deli was $4.99 per pound. This week, cherries at the same deli are on sale at a 1

sergij07 [2.7K]

Answer:

The price for 3.75 pounds of cherries is $17.775.

Step-by-step explanation:

The price las week was $ 4.99 and it got a discount of 15% for this week, this means that the price for this week is 100% of the one prior minus 15%, therefore it is 85% of the last price. We need to calculate the price per pound with this discount as shown below:

$\text{this week} = \text{last week}*\frac{95}{100}\\\\\text{this week} = 4.99*0.95 = 4.74 \text{ per pound}\\$