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3 years ago

Solve and get brainliest!!

Mathematics

2 answers:

Oksi-84 [34.3K]3 years ago

7 0

Answer:

$477

Step-by-step explanation:

Net Price:$ 450.00

+ Sales Tax (6%):$ 27.00

Total Price:$ 477.00

SCORPION-xisa [38]3 years ago

3 0

Answer:

642 right??

Step-by-step explanation:

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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

HELP PLEASE ASAP !!! ON THE LAST QUESTION NEED IT AS SOON AS POSSIBLE !! 10 points

Pavlova-9 [17]

First blank: not random Because he sent it to the top 5 students. Not random students throughout the grade.

second blank: I would guess not valid because it was not a random sample.

6 0

3 years ago

784.5 78.45 7.845 describe the pattern

ICE Princess25 [194]

Answer:

The pattern is being divided by 10 each time.

Step-by-step explanation:

784.5/10=78.45, and so on

8 0

3 years ago

Read 2 more answers

A coffee stand sells cups of coffee for $6 and cups of tea for $3 . Tuesday, a total of 75 cups were sold, and the total money c

gtnhenbr [62]

C + t = 75......c = 75 - t
6c + 3t = 312

6(75 - t) + 3t = 312
450 - 6t + 3t = 312
-6t + 3t = 312 - 450
-3t = - 138
t = -138/-3
t = 46 <=== 46 cups of tea were sold

c = 75 - t
c = 75 - 46
c = 29 <=== 29 cups of coffee

5 0

4 years ago

Find the volume of the pyramid.

xz_007 [3.2K]

I think it is 432.sorry if it is wrong though. My bad calculation error.

3 0

3 years ago

Solve and get brainliest!!​

Solve and get brainliest!!