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4 years ago

Question is on the picture.

Mathematics

2 answers:

serg [7]4 years ago

7 0

So for percent incerease and decrease you could use N-O/O *100
(NEW-OLD, DIVIDED BY OLD TIMES BY 100.

450 IS OLD AND 360 IS NEW SO,,,,,,,,,,,,,,,,,,,,,,,,,, 360-450/450 *100
THAN YOU GET -20... BUT YOU CAN'T SAY -2O SO YOU SAY 20% DECREASE

20% DECRASE IS YOU ANSWER(YOU ALWAYS HAVE TO PUT INCREASE OR DECREASE)

HOPE IT HELPS :P

Dafna1 [17]4 years ago

5 0

So first subtract.....as 450-360=90.....and then find ℅ so.....90/450×100=20 ℅ .....so 20℅ answee

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Some please help!! I will give brainliest

True [87]

Answer:

$f(x) = 3(x - 1)^{2}$

Step-by-step explanation:

This function should have a form similar to

$f(x) = ax^{2} +bx+c$

The function that reminds me the most of the function that is drawn on the grid is the following function......

$f(x) = 3(x - 1)^{2}$

3 0

3 years ago

Can someone help me with these 5 question I have attached?

Contact [7]

Example 2: x=10

Example 3: x=-1

Example 4: x=35

Example 5: a-b+c=9

Example 6: x=1, x=1/2

Further explanation:

Example 2:

$\sqrt{4x-4} =6$

Taking Square on both sides

$(\sqrt{4x-4})^2 =(6)^2\\4x-4=36\\4x=36+4\\4x=40\\\frac{4x}{4}=\frac{40}{4}\\x=10$

Example 3:

$9+\sqrt{4x+8}=11$

Subtracting 9 from both sides

$9-9+\sqrt{4x+8}=11-9\\\sqrt{4x+8}=2\\$

Taking Square on both sides

$(\sqrt{4x+8})^2=(2)^2\\4x+8=4\\4x=4-8\\4x=-4\\\frac{4x}{4}=-\frac{4}{4}\\x=-1$

Example 4:

$8+\sqrt{x+1}=2$

subtracting 8 from both sides

$8-8+\sqrt{x+1}=2-8\\\sqrt{x+1}=-6$

Taking Square on both sides

$(\sqrt{x+1})^2=(-6)^2\\x+1=36\\$

Subtracting 1 from both sides

$x+1-1=36-1\\x=35$

Example 5:

$\sqrt{a-b+c}=3$

Taking Square on both sides

$(\sqrt{a-b+c})^2=(3)^2\\a-b+c=9\\$

Example 6:

$2\sqrt{2x-1}=4x-2$

Taking square on both sides

$(2\sqrt{2x-1})^2=(4x-2)^2\\4(2x-1)=16x^2+4-16x\\8x-4=16x^2-16x+4\\8x=16x^2-16x+4+4\\8x=16x^2-16x+8\\16x^2-16x-8x+8=0\\16x^2-24x+8=0$

dividng whole equation by 8

$2x^2-3x+1=0\\2x^2-2x-x+1=\\2x(x-1)-1(x-1)=0\\(2x-1)(x-1)=0\\2x-1=0 => x=\frac{1}{2}\\x-1=0 => x=1$

Keywords: Radical Expressions, Examples

Learn more about radical expressions at:

#LearnwithBrainly

3 0

3 years ago

Is 18 / 17 improper proper or mixed

Sonbull [250]

18/17 is improper fraction

1 1/17 is mixed

6 0

3 years ago

sandy is upgrading her internet service.fast internet charges 60$ for installation and $50.45 per month.

DedPeter [7]

110.45 if you add but what is the question.oh, and for fast internet I highly request Xfinity.

8 0

3 years ago

The students at Southern Junior High School are divided into four homerooms. Benjamin just moved into the school district and wi

brilliants [131]

Answer: A 4 side dice.

Step-by-step explanation:

Benjamin has 4 possible homerooms with the same probability. This means that every homeroom has a 1/4 = 0.25 (or 25%) probability of getting chosen.

You could emulate this situation with a 4 sided dice (are like little pyramids) where each side of the dice would represent the selection of one of the homerooms.

6 0

3 years ago