All categories

3 years ago

Someone pls help me with this question pls it will help me so much thank you !:)

Mathematics

1 answer:

sasho [114]3 years ago

4 0

Answer:

50%

Step-by-step explanation:

Percent change is (final - initial) / initial

(120 - 80)/80 = 40/80 = 0.5 = 50%

You might be interested in

From delta math: Subtract -2x^2 + 3x - 9 from 8x^2 + 10x - 10

Leto [7]

Answer:

$10x^2 + 7x - 1$

Step-by-step explanation:

Step 1: Build the expression in numerical form.

$(8x^2 +10x - 10) - (-2x^2 + 3x - 9)$

Step 2: Distribute the negative sign.

$8x^2 +10x -10 + (-1)(-2x^2) + (-1)(3x) + (-1)(-9)$
$8x^2 + 10x - 10 + 2x^2 + (-3x) + 9$

Step 3: Combine like terms.

$(8x^2 +2x^2) + (10x -3x) + (-10+9)$
$10x^2 +7x -1$

Therefore, the answer is $10x^2 + 7x -1$ .

4 0

3 years ago

Helpppppppppp please somebody

marissa [1.9K]

Would for more points

4 0

4 years ago

Read 2 more answers

Solve 3^2x =30 a- log3 (30)/2 b- log3 15 c- 2(log 3 30) d- log 3 60

noname [10]

(A) is the answer yes is A

6 0

3 years ago

6. Why is it helpful to have both lines on the same graph? (2 points)

Eva8 [605]

Answer:Line graphs can give a quick analysis of data. You're able to quickly tell the range, minimum/maximum, as well as if there are any gaps or clusters. This also means that it can easily observe changes over a certain period of time. When drawing them, you're able to use exact values from your data.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What is the radius for the circle given by the equation x^2+(y -3)^2 = 21

MatroZZZ [7]

$\bf\textit{equation of a circle}\\\\(x- h)^2+(y- k)^2= r^2\qquadcenter~~(\stackrel{}{ h},\stackrel{}{ k})\qquad \qquadradius=\stackrel{}{ r}\\\\[-0.35em]\rule{34em}{0.25pt}\\\\x^2+(y-3)^2=21\implies (x-0)^2+(y-3)^2=(\sqrt{21})^2\qquad \begin{cases}center~(0,3)\\r=\sqrt{21}\end{cases}\\\\\\r\approx 4.58257569495584000659\implies r = \stackrel{\textit{rounded up}}{4.583}$

3 0

3 years ago

Read 2 more answers