# What is 9 and 10? What's the CORECT answer?

QUESTION POSTED AT 10/10/2019 - 07:34 PM

QUESTION POSTED AT 10/10/2019 - 07:34 PM

9. C, because subtracting a negative number "changes" the sign to +

10. C, for the same reason. The equation could be rewritten as -4.2+6.9, which equals 2.7

10. C, for the same reason. The equation could be rewritten as -4.2+6.9, which equals 2.7

**Answer:**

**pH = 2**

**Step-by-step explanation:**

To graph the pH function :

The range of the pH function varies from 1 to 14

And the concentration of hydrogen ion goes from 0 to 1

Taking pH value on y-axis and concentration of hydrogen ion on x-axis, The resultant graph is attached below :

Given : Concentration of hydrogen ion = 0.01

Now, pH = -log(0.01)

ANSWERED AT 17/10/2019 - 09:23 AM

QUESTION POSTED AT 17/10/2019 - 09:23 AM

The answer to this question is 8

ANSWERED AT 17/10/2019 - 09:21 AM

QUESTION POSTED AT 17/10/2019 - 09:21 AM

The correct answer is 'B' (x - 3)^2 + (y + 2)^2 = 9

ANSWERED AT 17/10/2019 - 09:17 AM

QUESTION POSTED AT 17/10/2019 - 09:17 AM

The population in Cuba is expected to grow at a rate of 4% each year . Now is

1.3million .

This means that after 1 year the population in Cuba would be: 1.3 million+ 4%*1.3million=1.300.000+52.000=1.352.000

After the second year the population would be: 1.352.000 + 4% of 1.352.000=...

After n years the population would be: population in the n-1 th year + 4% (population in the year n-1)

In 10 years the population in Cuba would be: population in the 9-th year +4% from the population in the 9-th year

1.3million .

This means that after 1 year the population in Cuba would be: 1.3 million+ 4%*1.3million=1.300.000+52.000=1.352.000

After the second year the population would be: 1.352.000 + 4% of 1.352.000=...

After n years the population would be: population in the n-1 th year + 4% (population in the year n-1)

In 10 years the population in Cuba would be: population in the 9-th year +4% from the population in the 9-th year

ANSWERED AT 17/10/2019 - 09:16 AM

QUESTION POSTED AT 17/10/2019 - 09:16 AM

Wouldn't it be 24? Because the range is the max-minimum=range. So the equation is x-16=8, which is x=24

ANSWERED AT 17/10/2019 - 09:16 AM

QUESTION POSTED AT 17/10/2019 - 09:16 AM

ANSWERED AT 17/10/2019 - 09:15 AM

QUESTION POSTED AT 17/10/2019 - 09:15 AM

I'm assuming the answer is 'B' 12 degrees. I have a protractor, but I can't find where it is.

ANSWERED AT 17/10/2019 - 09:14 AM

QUESTION POSTED AT 17/10/2019 - 09:14 AM

10×8 is that what you mean

ANSWERED AT 17/10/2019 - 09:14 AM

QUESTION POSTED AT 17/10/2019 - 09:14 AM

Increased price = $10 + $10×15% = $11.50

decreased price = $11.50 - $11.5×25% = 8.625

decreased price = $11.50 - $11.5×25% = 8.625

ANSWERED AT 17/10/2019 - 09:14 AM

QUESTION POSTED AT 17/10/2019 - 09:14 AM

I believe your answer is 71 96 175

ANSWERED AT 17/10/2019 - 09:13 AM

QUESTION POSTED AT 17/10/2019 - 09:13 AM

Number 13, B

Number 14: D

Number 15: B

Number 14: D

Number 15: B

ANSWERED AT 17/10/2019 - 09:10 AM

QUESTION POSTED AT 17/10/2019 - 09:10 AM

Volume formulas:

rectangle prism: l×w×h

cube: s^3

cylinder:(pi)r^2×h

triangle prism: (a×b/2)×h

cylinder:(pi)r^2×h

box:l×w×h

40) 5m×3m×4m =15m×4m= 60m^3

41) 6 ft × 6 ft ×6 ft = 36 ft × 6 ft = 216 ft^3

42) d=2r 10/2=5 r=5

3.14×5^2×14=78.5×14= 1099cm^3

43) 15=a×b/2 (area of trianlge)

15×12= 180in^3

44) c=2 (pi)r 8pi=2r (pi)

r=4

3.14×4^2×7=50.24×7=351.68

45) 24 ft^3 =2 ft × 3 ft × height

24=6×h

÷6 both sides

h=4ft

rectangle prism: l×w×h

cube: s^3

cylinder:(pi)r^2×h

triangle prism: (a×b/2)×h

cylinder:(pi)r^2×h

box:l×w×h

40) 5m×3m×4m =15m×4m= 60m^3

41) 6 ft × 6 ft ×6 ft = 36 ft × 6 ft = 216 ft^3

42) d=2r 10/2=5 r=5

3.14×5^2×14=78.5×14= 1099cm^3

43) 15=a×b/2 (area of trianlge)

15×12= 180in^3

44) c=2 (pi)r 8pi=2r (pi)

r=4

3.14×4^2×7=50.24×7=351.68

45) 24 ft^3 =2 ft × 3 ft × height

24=6×h

÷6 both sides

h=4ft

ANSWERED AT 17/10/2019 - 09:06 AM

QUESTION POSTED AT 17/10/2019 - 09:06 AM

5/12 basically you've got to square root the 6 which is 6×2=12 and the numerator remains the same. hope this helps

ANSWERED AT 17/10/2019 - 09:05 AM

QUESTION POSTED AT 17/10/2019 - 09:05 AM

Q1) Amanda's container

Amanda's container: 13.5 x 10 x 10 = 1350

Mary's container: 20 x 8 x 8 = 1280

1350 > 1280 so answer is Amanda

Q2) 70 cm^3

1350 - 1280 = 70

You should not be needing help for these questions because all you need to know how to do is multiplication and subtraction. Please try the questions yourself next time because practice is important for doing your exams fast enough (-_-")

Amanda's container: 13.5 x 10 x 10 = 1350

Mary's container: 20 x 8 x 8 = 1280

1350 > 1280 so answer is Amanda

Q2) 70 cm^3

1350 - 1280 = 70

You should not be needing help for these questions because all you need to know how to do is multiplication and subtraction. Please try the questions yourself next time because practice is important for doing your exams fast enough (-_-")

ANSWERED AT 17/10/2019 - 09:04 AM

QUESTION POSTED AT 17/10/2019 - 09:04 AM

The answer is B because A+B = your new set of numbers

ANSWERED AT 17/10/2019 - 09:03 AM

QUESTION POSTED AT 17/10/2019 - 09:03 AM

B is the correct answer

ANSWERED AT 17/10/2019 - 09:03 AM

QUESTION POSTED AT 17/10/2019 - 09:03 AM

This one is B for the answer

ANSWERED AT 17/10/2019 - 09:03 AM

QUESTION POSTED AT 17/10/2019 - 09:03 AM

Answer is D because you Do 37*5

ANSWERED AT 17/10/2019 - 09:02 AM

QUESTION POSTED AT 17/10/2019 - 09:02 AM

17 because 100 divided by 5 is 20 but you take away 3 because 5, 10, and 100 won't be accepted.

ANSWERED AT 17/10/2019 - 09:02 AM

QUESTION POSTED AT 17/10/2019 - 09:02 AM

**Answer:**

45

**Step-by-step explanation:**

ANSWERED AT 17/10/2019 - 09:02 AM

QUESTION POSTED AT 17/10/2019 - 09:02 AM

40% u get that by doing 2 fractions 10/25 and x/100 u cross multiply and get 1000 and 25x u divide 1000 by 25 to get 40 which is ur %

ANSWERED AT 17/10/2019 - 09:01 AM

QUESTION POSTED AT 17/10/2019 - 09:01 AM

A. X=2

Combine like terms 9=-7+8x

Add 7 to both sides 16=8x

Divide 8 from both sides x=2

Combine like terms 9=-7+8x

Add 7 to both sides 16=8x

Divide 8 from both sides x=2

ANSWERED AT 17/10/2019 - 09:00 AM

QUESTION POSTED AT 17/10/2019 - 09:00 AM

.333 translated to a fraction would be one-third or 1/3

ANSWERED AT 17/10/2019 - 08:59 AM

QUESTION POSTED AT 17/10/2019 - 08:59 AM

There are six different options

ANSWERED AT 17/10/2019 - 08:58 AM

QUESTION POSTED AT 17/10/2019 - 08:58 AM

ANSWERED AT 17/10/2019 - 08:57 AM

QUESTION POSTED AT 17/10/2019 - 08:57 AM

10,000 of the endangered birds would be left

ANSWERED AT 17/10/2019 - 08:56 AM

QUESTION POSTED AT 17/10/2019 - 08:56 AM

Basically I do not know and I hope you find someone who knows, cool story and peace on the streets

ANSWERED AT 17/10/2019 - 08:55 AM

QUESTION POSTED AT 17/10/2019 - 08:55 AM

ANSWERED AT 17/10/2019 - 08:54 AM

QUESTION POSTED AT 17/10/2019 - 08:54 AM

There are **792 different ways** of choosing 5 books from a shelf containing 12 books. This problem can be solved using the combination formula of mathematics. The combination formula of mathematics is a number of way of selecting thing from a collection and the formula stated as n(n-1)...(n-k+1)/k(k-1)...1 (Calculation: 12*11*10*9*8/5*4*3*2*1 = 95040/120 = 792).

ANSWERED AT 17/10/2019 - 08:53 AM

QUESTION POSTED AT 17/10/2019 - 08:53 AM

We will use subtraction to solve this. We will subtract 5 3/4 from 8 3/8, because we must take away the amount she used.

8 3/8 - 5 3/4

The easiest way to solve this is to convert to fractions.

67/8 - 23/4

We must create common denominators to solve this. We will multiply both 23 and 4 from the second fraction by 2 to get to a common denominator of 8.

67/8 - 46/8 = 21/8

We will then convert this fraction back to a mixed number.

21/8 = 2 5/8

2 5/8 liters is our final answer

8 3/8 - 5 3/4

The easiest way to solve this is to convert to fractions.

67/8 - 23/4

We must create common denominators to solve this. We will multiply both 23 and 4 from the second fraction by 2 to get to a common denominator of 8.

67/8 - 46/8 = 21/8

We will then convert this fraction back to a mixed number.

21/8 = 2 5/8

2 5/8 liters is our final answer

ANSWERED AT 17/10/2019 - 08:52 AM

QUESTION POSTED AT 17/10/2019 - 08:52 AM