MATHEMATICS HIGH SCHOOL

If sqrt x=-7 then x=-49
true or false

Answers

Answer 1
Answer:

False.


IF √x = -7.


Square both sides


(√x)² = (-7)²


x = (-7)(-7)


x = 49


x will equal 49


False is your answer



hope this helps

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A two digit number is 4 times the sum of its digits and twice the product of its digit.FIND THE NUMBER

Answers

x - tenths digit
y - units digit

10x+y=4(x+y)\n 10x+y=2xy\n\n 10x+y=4x+4y\n 10x+y=2xy\n\n 6x=3y\n 10x+y=2xy\n\n 3x=y\n 10x+y=2xy\n\n 10x+3x=2x\cdot3x\n 13x=6x^2\n 6x^2-12x=0\n 6x(x-2)=0\n x=0 \vee x=2\n\n y=3\cdot2\n y=6\n\n 10\cdot2+6=\boxed{26}

12(y+6)=36y What value of y makes the equation true?

Answers

Answer:

y=3

Step-by-step explanation:

12(y+6)=36y

12y+72=36y

72=24y

y=3

Hope this helps! :)

Answer:

To find the value of y that makes the equation 12(y+6)=36y true, we need to solve for y. Let's break down the steps:

1. Distribute the 12 to both terms inside the parentheses:

12y + 72 = 36y

2. Next, we want to isolate the variable y. To do this, we'll move the 12y term to the other side of the equation by subtracting 12y from both sides:

72 = 24y

3. Now we have 24y on one side. To solve for y, we divide both sides of the equation by 24:

72/24 = y

4. Simplifying the left side gives us:

3 = y

Therefore, the value of y that makes the equation true is y = 3.

<3

Hamid has gained weightHe now weighs 88kg, which is 10% higher than his normal weight.

What is Hamid's normal weight?

Answers

If we let x be Hamid's normal weight, 10% of the normal weight can be expressed as 0.10x. The equation that would let us better visualize the problem,                                 
(1.10)x = 88

The value of x from the equation is 80. 

Therefore, the answer is 80 kg. 

The normal weight of Hamid is 80 kg.

Step-by-step explanation:

Given information:

The current weight of Hamid is 88 kg.

Let , W is the normal weight of hamid.

Now , if he is having 10% extra weight

So,

The value 88 is sum of normal weight and 10% of the normal weight

So,

W+0.10* W=88\n1.10* W=88\nW=80

Hence, the normal weight of Hamid is 80 kg.

For more information visit:

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Can someone please help me with this? Thank you!

Answers

Answer: $20.44

Hope this helps you!

Order the periods of time from least to greatest.1% of an hour 2/3 of a minute 0.0004 of a day

Answers

The order from least to greatest would be 2/3 of a minute .0004 of a day and one percent of an hour.

Jeremy opens a chocolate shop in the city. He pays $1,500 a month for rent and maintenance of the shop. The price of raw materials and manufacturing the chocolates is $6,000 a month. He sells the chocolates individually and in boxes of a dozen. Jeremy understands that his business needs a little time to become a success and decides that he wants to build a customer base initially. He is happy to break even for the first year. If Jeremy sells 2,400 individual chocolates and 50 boxes a month, how should he price his chocolates to break even, given the costs? (Assume that the price of a box is the same as the price of 12 individual chocolates.)

Answers

Amount of money paid by Jeremy as rent and maintenance of shop per month = $1500
Cost of raw materials and manufacturing per month = $6000
Total cost that Jeremy has to spend per month = (1500 + 6000) dollars
                                                                            = 7500 dollars
Number of individual chocolates sold = 2400
Number of chocolates sold in boxes = 50 boxes
                                                           = (12 * 50) chocolates
                                                           = 600 chocolates
Then
Total number of chocolates sold by Jeremy = 2400 + 600
                                                                       = 3000
Now
Price of each chocolate = 7500/3000 dollars
                                       = 75/30 dollars
                                       = 5/2 dollars
                                       = 2.5 dollars
Price of 600 chocolates = 600 * (5/2) dollars
                                       = 300 * 5 dollars
                                       = 1500 dollars
Price of 12 chocolates = (1500/600) * 12
                                     = 15 * 2
                                     = 30 dollars
Then
We can say that each box of chocolate should be sold at $30. All the loose chocolates should be sold at $2.5 each.

Answer:

For those on Plato and it ask about how many boxes

Step-by-step explanation:

D) 232 boxes

#PlatoLivesMatter
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