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3 years ago

When 4(0.5x+2.5y-0.7-1.3y+4) is simplified, what is the resulting expression?

Mathematics

1 answer:

snow_lady [41]3 years ago

7 0

Answer:

2x + 4.8y +13.2

Step-by-step explanation:

1. (4)(0.5x+2.5y+−0.7+−1.3y+4)

2. (4)(0.5x)+(4)(2.5y)+(4)(−0.7)+(4)(−1.3y)+(4)(4)

3. 2x+10y−2.8−5.2y+16

4. 2x + 4.8y +13.2

I hope this helped, please mark Brainliest, thank you!!

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What is the vertex form of y=2x^2-8x+1

bezimeni [28]

Answer:

$2(x-2)^2-7$

Step-by-step explanation:

$y=2x^2-8x+1$

When comparing to standard form of a parabola: $ax^2+bx+c$

$a=2$
$b=-8$
$c=1$

Vertex form of a parabola is: $a(x-h)^2+k$ , which is what we are trying to convert this quadratic equation into.

To do so, we can start by finding "h" in the original vertex form of a parabola. This can be found by using: $\frac{-b}{2a}$ .

Substitute in -8 for b and 2 for a.

$\frac{-(-8)}{2(2)}$

Simplify this fraction.

$\frac{8}{4} \rightarrow2$

$\boxed{h=2}$

The "h" value is 2. Now we can find the "k" value by substituting in 2 for x into the given quadratic equation.

$y=2(2)^2-8(2)+1$

Simplify.

$y=-7$

$\boxed{k=-7}$

We have the values of h and k for the original vertex form, so now we can plug these into the original vertex form. We already know a from the beginning (it is 2).

$a(x-h)^2+k\\ \\ 2(x-2)^2-7$

6 0

3 years ago

If 7 times a number is decreased by 5 and this difference is doubled the result is 14 less than twice the number. What is the nu

andrey2020 [161]

2(7n-5)=2n-14

14n-10=2n-14

12n=-4

n=-1/3

6 0

4 years ago

Write an equation for the translation of y = |x| and the translation is up 4 right 2.

Darya [45]

<span> y = |x-2|+4

it is a negative 2 because you do the inverse</span>

8 0

4 years ago

K=6<br> c=2 <br> 5 • k - 10c + 8

Arlecino [84]

Answer:

22-10c

Step-by-step explanation:

3 0

4 years ago

Someone help me please

Darya [45]

M<1 = 180°-66°-84°
= 30°
m<3 = 180°-84°
= 96°
m<2 = 180°-96°-43°
= 41°

3 0

3 years ago