MATHEMATICS HIGH SCHOOL

Eighty percent of seniors at the local high school graduate each year. If there are 750 seniors this year, how many will graduate?670
650
600
500

Answers

Answer 1
Answer: What you need to find is 80% of 750

There are many ways to figure that out but the way that I did it is to divide 750 by 100. The answer (7.5). Is 1% of 750
In all I had to do was multiply 7.5 x 80. Giving us the answer which is 600
Answer 2
Answer:

Answer:

600

Step-by-step explanation:

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Find the GCF of the given polynomial. 8x^6y^5 - 3x^8y^3
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On the xy-plane, the graph of function f has x-intercepts at -3, -1, and 1. which of the following could define f?A) f(x)= (x-3)(x-1)(x+1) B) f(x)=(x-3)(x-1)^2 C) f(x)=(x-1)(x+1)(x+3) D) f(x)=(x+1)^2(x+3)
2(2+3)+4x=2(2x+2)+6 how many solutions?
Find the range and domain of the following function

What is the solution for x?

Answers

3 - x = 5

Add x on both sides.

3 - x + x = 5 + x

3 = 5 + x

Subtract 5 on both sides

3 - 5 = 5 - 5 + x

3 - 5 = x

x = 3 - 5

x = -2

Which permanent teeth eruption usually occurs first? A. Central incisors. B. Lateral incisors. C. Cuspids (canines). D. First premolars (Bicuspids).

Answers

Answer: Letter A

Step-by-step explanation: because it is located at the front of the jaw and is the closest to the dental lamina, the source of tooth development in the jawbone

6 to the 2nd power ÷ 2(3) + 4

Answers

For this case we have the following expression:
 "6 to the 2nd power ÷ 2(3) + 4"
 Rewriting the expression in algebraic form we have:
 (6^2)/(2(3)+4)
 Rewriting the numerator we have:
 (36)/(2(3)+4)
 Rewriting the denominator we have:
 (36)/(6+4)
 (36)/(10)
 (18)/(5)
 Dividing both numbers we have:
 (18)/(5) = 3.6
 Answer:
 The result of the given expression is: 
 (6^2)/(2(3)+4)=3.6
6 to the second power means 6²

So,

6² ÷ 2 ( 3 ) + 4
 
=36/2(3)+4

=(18)(3)+4

=54+4

=58

Adam is going to cook a turkey for 14 people and wants to allow ¾ lb of turkey for each person. 1lb = 450 g

How much would a turkey cost for 14 people?

Turkey sizes -
Small: 2kg - 3.9kg
Medium: 4kg - 5.4kg
Large: 5.5kg - 7.2kg
Extra Large: 7.3kg - 9.2kg

Turkey prices -
Small/Medium: £5.99 per Kg
Large/Extra large: £4.99 per Kg

Answers

I did (450*3/4=337.5) to get how much each person would eat, then I did (337.5*14=4725g) to see how big the turkey should be. I then converted grams to kilos (4725*0.001=4.725 kg), and I got how big the turkey would be. It turns out the appropriate size of the turkey would be medium, so then what I did was that I looked for the medium price of the turkey per kg, and found that it was £5.99 per kg. I did (4.725*5.99) and I got about £28.30.It would cost £28.30 for 14 people.

These problem can be solved using conversion fractions. A conversion fraction is a unitary fraction that we use to convert units; the idea is multiply the unit we want to convert by a fraction with the same unit as denominator and the target unit as numerator.

First, we are going to find how many grams are (3)/(4) lb. Since we know that 1lb = 450g, we just need to multiply (3)/(4)lb by the conversion fraction (450g)/(1lb):

Grams per person = ((3)/(4)lb)((450g)/(1lb) )=(0.75lb)((450g)/(1lb) )=337.5g

Next, we are going to find the total amount of grams Adam will need. Since there are 14 persons, we just need to multiply the grams per person by 14:

Total grams = 14(337.5g)=4725g

Since the cost of the turkey is expressed in kilograms, we need to convert the total grams to kilograms. We know that 1 kg = 1000 g, so we need to multiply the total grams by the conversion factor (1kg)/(1000g):

Total kg = (4725g)((1kg)/(1000g) )=4.725kg

Now we know know that Adam will need to buy 4.725 kg of medium size turkey, so the only thing left is multiply the price of the medium size turkey by the total kg:

Total cost = (4.725kg)((5.99)/(kg) )=28.30

We can conclude that a turkey for 14 people will cost£28.30.

If the cells continue to double every 5 minutes, how long will it take to fill 3 additional bottles of the same size? minutes

Answers

Answer: 10 minutes.


Step-by-step explanation: Since the cells get double in every 5 minutes, so the number of bottles that will be filled in 5 minutes= 2. After another 5 minutes, these 2 bottles of cells will fill another two bottles. Now, out of these 4 bottles, one is old which was already filled with cells. So, no. of new bottles filled=3 in 10 minutes.

So, it will take 10 minutes to fill another 3 bottles of the same size.

The answer is 10 minutes

Simplify. (Polynomials) 1. (2cd^3)(-2c)(3c^d) =

2. (2x^2)(3x^6) - (4x^4)(2x^4) =

3. (6x^2)(3x^6) + (4x^4)(2x^4) =

4. (2ab^2)^2(-3a^2b^2) =

5. -6a^3(a^2-2a+1) =

6. -2xy(x^2-3xy+y^2) =

7. (a+b) (2a^2-ab+3b^2) =

(Please help asap!)

Answers

1. (2cd^(3))(-2c)(3c^(d))=\n-12c^(d+2)d^(3)

2. (2x^(2))(3x^(6))-(4x^(4))(2x^(4))=\n6x^(8)-8x^(8)=\n-2x^(8)

3. (6x^(2))(3x^(6))+(4x^(4))(2x^(4))=\n18^(8)+8x^(8)=\n26x^(8)

4. (2ab^(2))^(2)(-3a^{2b^(2)})=\n4a^(2)b^(4)(-3a^{2b^(2)})=\n-12a^{2b^(2)+2}b^(4)

5. -6a^(3)(a^(2)-2a+1)=\n-6a^(5)+12a^(4)-6a^(3)

6. -2xy(x^(2)-3xy+y^(2))=\n-2x^(3)y+6x^(2)y^(2)-2xy^(3)

7. (a+b)(2a^(2)-ab+3b^(2))=\n2a^(3)-a^(2)b+3ab^(2)+2a^(2)b-ab^(2)+3b^(3)=\n2a^(3)+3b^(3)+a^(2)b+2ab^(2)
1.(2cd^(3))(-2c)(3cd)
   -12c^(3)d^(4)

2.(2x^(2))(3x^(6)) - (4x^(4))(2x^(4))
   6x^(8) - 8x^(8)
   -2x^(8)

3.(6x^(2))(3x^(6)) + (4x^(4))(2x^(4))
   18x^(8) + 8x^(8)
   26x^(8)

4.(2ab^(2))^(2)(-3a^(2)b^(2))
   ((2ab^(2))(2ab^(2)))(-3a^(2)b^(2))
   (4a^(2)b^(4))(-3a^(2)b^(2))
   -12a^(4)b^(6)

5.-6a^(3)(a^(2) - 2a + 1)
   -6a^(3)(a^(2)) + 6a^(3)(2a) - 6a^(3)(1)
   -6a^(5) + 12a^(4) - 6a^(3)

6.-2xy(x^(2) - 3xy + y^(2))
   -2xy(x^(2)) + 2xy(3xy) - 2xy(y^(2))
   -2x^(3)y + 6x^(2)y^(2) - 2xy^(3)

7.(a + b)(2a^(2) - ab + 3b^(2))
   (2a^(3) - a^(2)b + 3ab^(2) + 2a^(2)b - ab^(2) + 3b^(3))
   (2a^(3) - a^(2)b + 2a^(2)b + 3ab^(2) - ab^(2) + 3b^(3))
   2a^(3) + a^(2)b + 2ab^(2) + 3b^(3)
  
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