I need an answer for "−12x+y=10"

Answer:

If it is using pi as 3.14, it is 56.52.

If it is just the pi symbol, it is 18π.

Step-by-step explanation:

We do 9 x 3.14 = 28.26 and then you multiply that by 2 to get 56.52.

We do 9 x π = 9π. Then multiply by 2 to get 18π.

Perimeter = side 1 + side 2 ´+ side 3.

Triangle 1

Perimeter = 6 + 8 + 10

= 24

Triangle 2

Perimeter = 9 + 12 + 15

= 36

Ratio

24/36 = 2/3

The ratio of the perimeters is also 2/3

Answer:

yes I can help you. the answer to the problem is 4/35.

Step-by-step explanation:

1. convert any mixed number into fractions.

your equation becomes 4/7÷5/1. this equals 4×1 over 7×5. multiply normally and your result is 4/35

Step-by-step explanation:

\(area \: ofa \: circle = \pi {r}^{2} \)

\(\pi {r}^{2} = \frac{22}{7} \times {r}^{2} \\ 153.86 = \frac{22}{7 } \times {r}^{2} \: \: \: \: \: \: \\ {r}^{2} = \frac{153.86 \times 7}{22} \\ {r}^{2} = \frac{1,077.02}{22}\\ r = \sqrt{48.95} \\ = 6.99\)

So let's take r as 7

\(circumference \: of \: a \: circle = 2\pi r\)

\(2\pi r = 2 \times \frac{22}{7} \)

= 2× 22/7 × 7

= 44

"If n is not odd and n is not 2, then n is not prime." "If n is even and n is not 2, then n is not prime."

Using the logical equivalences, we can rewrite the sentence "If n is prime, then n is odd or n is 2" in two different ways:

"If n is not odd and n is not 2, then n is not prime."

This is the contrapositive of the original statement. It states that if n is not odd and n is not 2, then n cannot be prime.

"If n is even and n is not 2, then n is not prime."

This is another equivalent form of the original statement. It states that if n is even and n is not 2, then n cannot be prime.

By using logical equivalences, we can rephrase the original statement to provide alternative perspectives and logical relationships between the variables involved.

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Answer:

I think C

Step-by-step explanation:

a. Subtracted from the actual physical units to arrive at weighted physical units is -49.6

b. Added to the actual physical units to arrive at weighted physical units is 82.1

The weighted average approach is what?

Explanation:

w= x1w1+x2w2+x3w3

Quizzes                 82     0.2        16.4

Exam                     90     0.35      31.5

Term paper           76     0.65      34.5

a) Weighted average = 16.4 + 31.5 + 34.5  = 82.1

b) Weighted average = 16.4 - 31.5 - 34.5  = -49.6

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The measure of the angles are: K, L, C, N, O G = -3/4, 65, 8 40.4, 89 and 44 respectively

To determine K

9x + 2 = 23 + 5x -1

9x -5x = -1 +2

4x = -3Making x the subject we have

x= -3/4

To find the value of L

Let angle L be x

x + 65 = 130

x=130-65

That is x = 65

To find the m<C

4x + 7 = 3x + 15

Collecting like terms

4x - 3x = 15-7

Making x the subject of the relation we have

x=8

To find the m<N

7x + 6x - 1 = 90

13x = 89

x=89/13

x= 6.9

Substitute x = 6.9 in 6x -1

6(6.9) -1

m<L = 40.4

To find the m<O

5x - 11 = 4x +9

5x-4x = 9 +11

x=20

By substitution in 4x +9 we have

4(20) +9

80+9

m<S = 89

To find the value of the angle G

6x - 4 = 5x +4

6x - 5x = 4+4

x = 8

Therefore the m<G is

5x +4

5(8) +4

40+4 = 44 digress

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Since the sum of the numbers selected must exceed 1, we know that n must be at least 1. Therefore, the expected value of X is finite and is equal to 2.

The expected value of the count of numbers that are selected can be found using the geometric distribution, since it models the number of trials until a success occurs.

Let X be the number of numbers that are selected until the sum of all numbers exceeds 1. Then X has a geometric distribution with parameter p, where p is the probability of success on each trial, i.e. the probability that the sum of all numbers selected does not exceed 1.

Since the numbers are selected uniformly over [0, 1], the probability of success on each trial is given by the area under the curve between 0 and 1 after the first number is selected.

On the first trial, the probability of success is 1. On the second trial, the probability of success is the area under the curve between 0 and (1 - the first number selected).

On the third trial, the probability of success is the area under the curve between 0 and (1 - the sum of the first two numbers selected), and so on.

The expected value of X can be found using the formula for the expected value of a geometric distribution:

E(X) = 1/p

Since the expected value of the sum of n independent and identically distributed uniform [0, 1] random variables is n/2, we can use this to find p:

E(X_1 + X_2 + ... + X_n) = n/2

where X_1, X_2, ..., X_n are the n numbers selected.

So, p = 1 / (1 + n/2).

Finally, we can substitute this into the formula for E(X) to find the expected value of X:

E(X) = 1 / (1 - n/2) = 2 / (2 - n)

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Answer: 5/8

\(m=\frac{-1-4}{-8-0}=\frac{-5}{-8}=\frac{5}{8}\)

Step-by-step explanation:

Answer:5/8

Step-by-step explanation:

In linear equation , A tree that is 50m tall and is transpiring roughly 90liters of water each day. So  0 calorie will the tree use to transpire this quantity of water .

What is linear equation explain with example?

What makes an equation linear?

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The rate of decay for carbon-14 is approximately 0.0001239 per year. Using this, the tree was felled and burned approximately 21,362 years ago.



1. The rate of decay (constant) for carbon-14 can be calculated using the formula:
decay constant (λ) = ln(2) / half-life
where ln denotes the natural logarithm. Substituting the given half-life of carbon-14 (5600 years) into the formula:
λ = ln(2) / 5600 ≈ 0.0001239 per year.

2. To calculate when the tree was felled and burned, we can use the concept of radioactive decay. Since the burnt wood contains approximately 10% of the original carbon-14, we can set up the following equation:
Remaining amount of carbon-14 = Original amount of carbon-14 × (1 - 10%)
Mathematically, this can be expressed as:
A = A₀ × e^(-λt)

where A is the remaining amount of carbon-14, A₀ is the original amount of carbon-14, e is the base of the natural logarithm, λ is the decay constant, and t is the time in years.

Solving for t in the equation above, we can rearrange it as follows:
t = -ln(A/A₀) / λ

Substituting the given values into the equation:
t = -ln(0.10) / 0.0001239 ≈ 21,362 years.

Therefore, the tree was felled and burned approximately 21,362 years ago.

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Answer:

the answer is b on plato

Step-by-step explanation

:

The age of the male sea turtle will be 215 years old.

The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.

You meet two talking sea turtles. The sum of their ages is 388. The male turtle is 42 years older than the female.

Let x be the age of a male and y be the age of a female. Then the equations will be

x + y = 388       ...1

x = y + 42         ...2

From equations 1 and 2, then we have

y + 42 + y = 388

2y = 346

y = 173 years old

Then the value of x will be

x = 173 + 42

x = 215 years old

The age of the male sea turtle will be 215 years old.

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Answer:

its 10

Step-by-step explanation:

10 times 1 is 10

The new coordinates of C and E are (6, - 3) and (1, 4) respectively.

What is Coordinates?

A pair of numbers which describe the exact position of a point on a cartesian plane by using the horizontal and vertical lines is called the coordinates.

Given that;

The coordinates are;

A(0,3), B(-4,-1), C(-3,-6), D(3.-6), E(4,-1)

Now,

Since, we know that;

The rule of the rotating about the origin 90 counterclockwise is,

(x, y) ⇒ (- y, x)

So, The coordinate of C after the rotating about the origin 90 counterclockwise is,

C (- 3, - 6) ⇒ (- (-6), - 3)

               ⇒ (6, - 3)

And, The coordinate of E after the rotating about the origin 90 counterclockwise is,

E (4, - 1) ⇒ (- (-1), 4)

               ⇒ (1, 4)

Thus, The new coordinates of C and E are (6, - 3) and (1, 4) respectively.

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Answer:

A is correct

Step-by-step explanation:

Answer:

A and B

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

the answer is B.the equation of the line

The mean temperature in Cleveland, OH, was 64°F. The accumulated degree days for Cleveland on 6-7 September 2022 were 1. The rest of Ohio accumulated degree days during the same period.

Based on the given information, the maximum temperature in Cleveland was 70°F and the minimum temperature was 58°F. To find the mean temperature, we add the maximum and minimum temperatures and divide by 2: (70°F + 58°F) / 2 = 128°F / 2 = 64°F.

Degree days are a measure of heating or cooling requirements. In this case, since the mean temperature in Cleveland was lower than a certain base temperature, degree days were accumulated. The base temperature is typically set at 65°F for cooling and 55°F for heating. Since the mean temperature in Cleveland was below the base temperature, the accumulated degree days are heating degree days (HDD).

For the specific date of 6-7 September 2022, Cleveland accumulated 1 heating degree day (HDD). This means that the average temperature for that period was 1 degree below the base temperature of 55°F.

The remaining stations in Ohio also accumulated heating degree days (HDD) on 6-7 September 2022. This indicates that the temperatures across the rest of Ohio were below the base temperature during that period.

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The half-life (in days) of this substance is 573. 79 days and it take 909. 43 days the sample to decay to one-third of its original amount

Let the original amount of the substance is A

Let the amount of substance after "t " days is given by

y(t) = Ae^kt

We are given ,

y (t ) = 69.6 %. of A when t= 300

0 .696 A = Ae^k( 300 )

In (0. 696 ) = 300 k

K = In (0.696 )/300

( a ) Half - Life t = ? when y(t)= A/2

A/2 = Ae^kt

1/2 = \(e^{In (0.696 )/300t}\)

300 *In ( 1/2 )/In (0 . 696) = t

t= 573.7884

t= 573 . 788 days ~ 573. 79 days

(b)

t = ? when  y(t)=A/3

A/3= Ae ^In (0 . 696 ) t/300

1/3 = e ^In (0 . 696 ) t/300

ln(1/3) = In (0 . 696 ) t/300

By Solving,

t= 909 . 4331 = 909. 43 days

Hence, This substance has a half-life of 573.79 days, and it takes a sample 909.43 days to decompose to one-third of its initial amount.

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Answer:

The answer is though, 8

Step-by-step explanation:

10/ x Is equal to 15/12

so it’s 8

hope this helps :))

Step-by-step explanation:

Let the number be \(\overline{abc}=100a+10b+c\).

\(100a+10b+c=34a+34b+34c \\ \\ 66a-24b-33c=0 \\ \\ 22a-8b-11c=0\)

Taking the equation mod \(11\) yields \(-8b \equiv \pmod{11}\), meaning \(b=0\).

So, \(22a-11c=0 \implies c=2a\).

So, the only possibilites are \((a,c)=(1,2), (2,4),(3,6), (4,8)\).

Therefore, there are \(4\) such numbers.

6. C. Given

7. C. L is the midpoint of EM

8. .D . Definition of midpoint

9. B . < FLE= <ALM

10. C .ASA Postulate

Answer:

2128

Step-by-step explanation:

T=wma T=76 X 7 X 4=2128

Answer:

T = 2128

Step-by-step explanation:

Step 1: Define equation

T = wma

w = 76

m = 7

a = 4

Step 2: Substitute

T = 76(7)(4)

Step 3: Evaluate

T = 2128

The amount that the investment earned at the end of 9 months to Mrs. Lani Garcia, given the amount put into it, was, $ 1, 162.50

The investment that Mrs. Lani Garcia would have earned on the investment and simple interest, in a year was :

= Amount invested x Simple interest rate

= 15, 500 x 10 %

= Php 1, 550

In 9 months therefore, the amount earned would be:

= Earnings per year / Number of months per year x Number of months invested

= 1, 550 / 12 x 9

= $ 1, 162.50

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Answer:

5/1

Step-by-step explanation:

because the multiplicative invers is the number that makes it equal to zero

Answer:

39.37 in

Step-by-step explanation:

The probability that a particular bulb will last from 1767 to 2579 hours is 2.7827

The term average in math is referred as the mean value which is equal to the ratio of the sum of the number of a given set of values to the total number of values present in the set.

Here we have given that suppose that a brand of lightbulb lasts on average 1792 hours with a standard deviation of 283 hours. assume the life of the lightbulb is normally distributed and we need to find the  probability that a particular bulb will last from 1767 to 2579 hours.

According to the given problem, we know that the value of the following are defined as follows:

Average = 1792

Standard deviation = 283

Now, based on the z score concept, the value of the required probability is calculated as,

=> z = (x-mean)/ sd

=> z lower = (1792 - 2579)/283 = - 2.7810

=> z upper = (1792 - 1797)/283 = -0.0017

Therefore, the probability is calculated as,

=> z upper - z lower

=> -0.0017 - (-2.7810)

=> 2.7827

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Given:

Price of  gold in 2001 = (0.5x+300)

Its price tripled in 2008 and then doubled in 2011. In 2016, its price dropped to \(\dfrac{2}{3}\) of the price in 2011.

To find:

An expression for the price of gold per ounce in 2016.

Solution:

We have,

Price of  gold in 2001 \(= (0.5x+300)\)

Its price tripled in 2008.

Price of  gold in 2008 \(= 3(0.5x+300)\)

Then doubled in 2011.

Price of  gold in 2011 \(= 2\times 3(0.5x+300)\)

In 2016, its price dropped to \(\dfrac{2}{3}\) of the price in 2011.

Price of  gold in 2016 \(=\dfrac{2}{3}\times 2\times 3(0.5x+300)\)

                                    \(=2\times 2(0.5x+300)\)

                                    \(=4(0.5x+300)\)

                                    \(=4(0.5x)+4(300)\)

                                    \(=2x+1200\)

Therefore, the required expression for the price of gold per ounce is (2x+1200).