All categories

4 years ago

Can some one help please?!! I’m struggling

Mathematics

1 answer:

aliina [53]4 years ago

4 0

Answer:

7x + 4y

Step-by-step explanation:

We have to write an equivalent expression of the given expression in standard form.

The expression is - 5(x - 4y) + 2(6x - 8y)

= -5(x) - 5(- 4y) + 2(6x) + 2(- 8y)

{Applying the distributive property of multiplication}

= - 5x + 20y + 12x - 16y

= (-5x + 12x) + (20y - 16y)

{Separating the x and y terms}

= 7x + 4y (Answer)

You might be interested in

What is the difference in the place value between the 2 in 324 and the 2 in 0.324?

irina1246 [14]

324
2 = Tens

0.324
0.02 = Hundredths

20 - 0.02 = 19.98

i am a mathematics teacher. if anything to ask please pm me

8 0

3 years ago

Tell whether x and y show direct variation y=x+1

konstantin123 [22]

9514 1404 393

Answer:

variation is NOT direct

Step-by-step explanation:

The +1 tells you the variation is not direct. The equation of direct variation is of the form ...

y = kx

with nothing added.

7 0

3 years ago

A national study found that 44% of college students engage in binge drinking. Using the 68-95-99.7 rule to describe the sampling

WARRIOR [948]

Answer:

$\bf \sigma = 0.0351$

Step-by-step explanation:

68–95–99.7 Rule : It also known as the empirical rule and it is a shorthand used to calculate the percentage of values that lie within a range around the mean in a normal distribution with the width of several standard deviation

μ = π = sample proportion

= 44 %

= 0.44

Population standard deviation proportion,

$\sigma = \sqrt{\frac{\pi \times (1 - \pi)}{n}}\\\\\implies \sigma= \sqrt{\frac{0.44 \times (1 - 0.44)}{200}}\\\\\implies\bf \sigma = 0.0351$

4 0

3 years ago

The length of a rectangle is represented by the polynomial 2x^3-5x^2+8 and the width is represented by the polynomial x+3 . Find

kozerog [31]

X^2+8x+15 is the area

because x+5 = length
and x +3 = width

(x+5)(x+3) =
x^2+3x+5x+15 =
x^2+8x+15 (area)

3 0

3 years ago

A cable company charges $32.50 a month for basic cable TV. Each premium channel selected costs an additional $4.95 per month. Wr

Whitepunk [10]

The equation is charge = $4.95x + $32.50

8 0

3 years ago