3x - 4y = -18
-4x + 8y = 32

Someone help on this solve this by elimination and show all steps please

Answer: 3.5"

64:80::2.8":x

\(\frac{64}{80}\)\(\frac{2.8}{x}\)    

2.8x80=224

224/64=3.5"

Answer:

3.5

Step-by-step explanation:

that's what the other dude said

The whole race is 12 3/4 kilometers.

The correct equations that represent this question are:

(8 1/2) ÷ 2/3 = ?

2/3 × ? = 8 1/2

(8 1/2) × 3/2 = ?

In this question we have been given Diego has run 2/3 of a race""s distance. He has run 8 1/2 kilometers.

We need to find the  length of the whole race.

Let the whole race be x.

Since Diego has run 2/3 of a race's distance which is 8 1/2 kilometers. The length of the whole race will be given by an equation:

2/3 × x = 8 1/2

x = (8 1/2) ÷ 2/3

x = (8 1/2) × 3/2

x = 17/2 × 3/2

x = 51/4

x = 12 3/4 kilometers.

Therefore, the length of the whole race= 12 3/4 kilometers.

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The choices for given question are given below.

Answer:

the answer is 5

Step-by-step explanation:

Answer

y = f(x) = 3x - 1

Explanation

The general form of the equation in point-slope form is

y - y₁ = m (x - x₁)

where

y = y-coordinate of a point on the line.

y₁ = This refers to the y-coordinate of a given point on the line

m = slope of the line.

x = x-coordinate of the point on the line whose y-coordinate is y.

x₁ = x-coordinate of the given point on the line

Two lines that are parallel to each other have the same slope.

If the equation of a straight line is written in the form of y = 3x - 6,

,The slope and y-intercept form of the equation of a straight line is given as

y = mx + c

where

y = y-coordinate of a point on the line.

m = slope of the line.

x = x-coordinate of the point on the line whose y-coordinate is y.

c = y-intercept of the line.

So, in y = 3x - 6, the slope = m = 3

So, using the point-slope form,

y - y₁ = m (x - x₁)

m = 3

(x₁, y₁) = (2, 5)

x₁ = 2, y₁ = 5

y - y₁ = m (x - x₁)

y - 5 = 3 (x - 2)

y - 5 = 3x - 6

y = 3x - 6 + 5

y = 3x - 1

In function notation, y = f(x)

So, the equation of the line required is

y = f(x) = 3x - 1

Hope this Helps!!!

Answer:

(squareroot2^2) times 27 (1/2)

Step-by-step explanation:

Answer:3z^2/9

Step-by-step explanation:

Answer:

$8700

Step-by-step explanation:

Associates cost $800 each, you have 9 associates, so multiply 800 by 9 which gives you: $800x 9= $7200.

Partners cost $1500 each, you have 4 partners, so multiply 1500 by 4 which gives you: $1500x 4=$6000.

Then add the two together like this: $7200+$1500= $8700.

Answer:8000

Associates cost $800 each, you have 9 associates, so multiply 800 by 9 which gives you: $800x 9= $7200.

Partners cost $1500 each, you have 4 partners, so multiply 1500 by 4 which gives you: $1500x 4=$6000.

Then add the two together like this: $7200+$1500= $8700.

Answer:

y=45x-540

Step-by-step explanation:

Answer:

13 and 14

Step-by-step explanation:

Method I - use calculator to find the square root

√193 = 13.892443989449805

Two closest integers

13 and 14

Method II - figure the squares closest to 193

13² = 169

14² = 196

Answer:

5624 divided by 5 is 1124.8

7792 divided by 4 is 1948

9015 divided by 8 is 1138.125

8064 divided by 6 is 1344

Hope this helps :D

Answer:

$1.2 is shipping and handling.

Step-by-step explanation:

If shipping is 1/5(20%) of the price 6 divided by 5 = $1.2

Answer:

4: 45pm

Step-by-step explanation:

First Film = 50 minutes

Second Film = 30 minutes

Cinema start screening time = 2:45 pm

- Both Film start screening

At 3: 15 pm

- Second film ends

- First film is till screening ( 20 minutes left)

- Break Commences

3: 25

- First film is till screening ( 10 minutes left)

- Break Ends

- Second film starts screening

3 : 35 pm

- First film ends

- Break Commences

- Second film is till screening ( 20 minutes left)

3 : 45

- Second film is till screening ( 10 minutes left)

- Break Ends

- First film starts screening

3 : 55 pm

- Second film ends

- First film is till screening ( 40 minutes left)

- Break Commences

4 : 05 pm

- Break Ends

- First Film is till screening ( 30 minutes left)

- Second film starts screening

4: 35 pm

- Both Film ends

- Break Commences

4: 45pm

- Break Ends

- Both Films start screening

Answer:

the equation has infinitely amny solutions

x is greater than eleven thirds.

Inequality are expression that have <, > , ≤ and ≥ .

Therefore,

1 / 5 (5x) + 10 + 5x > 32

Hence,

1 / 5 × 5x + 10 + 5x > 32

x + 10 + 5x >32

combine like terms

x + 10 + 5x >32

x + 5x + 10 > 32

Therefore,

x + 5x + 10 > 32

6x + 10 > 32

subtract 10 from both sides

6x + 10 - 10 > 32 - 10

6x > 22

divide both sides by 6

x > 22 / 6

x > 11 / 3

Therefore, x is greater than eleven thirds.

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Answer:

4 yards saved

Step-by-step explanation:

two adjacent sides: 6 + 8 = 14

diagonal: √(6² + 8²) = √100 = 10

14 - 10 = 4

Answer:

x = 20

Step-by-step explanation:

c^2 = a^2 + b^2

a = 12

b = 16

c = ?

c^2 = 12^2 + 16^2

c^2 = 144 + 256

c^2 = 400

sqrt(c^2) = sqrt(400)

c = 20

Answer:

C is correct

Step-by-step explanation:

6x^7+12x^6+3x^5

Answer:

Answer:

C is correct

Step-by-step explanation:

6x^7+12x^6+3x^5

Answer:

115$

Step-by-step explanation:

B) Yes. There is enough evidence to support the claim that the proportion of open or unlocked window or door burglaries differs from 29%. is the correct option.

To determine whether there is enough evidence to support the claim that the proportion of open or unlocked window or door burglaries differs from 29%, we can use a hypothesis test.

First, we need to state our null and alternative hypotheses. The null hypothesis (H0) is that the proportion of open or unlocked window or door burglaries is equal to 29%, while the alternative hypothesis (Ha) is that it differs from 29%.

H0: p = 0.29
Ha: p ≠ 0.29

Next, we can calculate the test statistic and the p-value. The test statistic is given by:

z = (x - np) / sqrt(np(1-p))

where x is the number of burglaries in the sample that were not via an open or unlocked door or window (i.e., 87), n is the sample size (130), and p is the hypothesized proportion under the null hypothesis (i.e., 0.29).

Plugging in the numbers, we get:

z = (87 - 130*0.29) / sqrt(130*0.29*0.71) = -1.96

The p-value is the probability of getting a test statistic as extreme or more extreme than the one we observed, assuming the null hypothesis is true. Since this is a two-tailed test (we are testing whether the proportion differs from 29%, not whether it is greater or less than 29%), we need to find the area under the normal distribution curve that corresponds to a z-score of -1.96 in both tails. Using a standard normal distribution table or a calculator, we find this area to be 0.05.

Finally, we compare the p-value to the level of significance (α) to make a decision. The level of significance is given as 0.05 in the question. Since the p-value is equal to α, we reject the null hypothesis and conclude that there is enough evidence to support the claim that the proportion of open or unlocked window or door burglaries differs from 29%.

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Answer:

y=4x+26

Step-by-step explanation:

x intercept =( \(\frac{- 13}{2} \\\), 0)

y intercept = (0,26)

Answer:

False

Step-by-step explanation:

789+890 = 1679

Answer:

789+890+1313=2992

Step-by-step explanation:

To find the curvature of the curve defined by the vector function r(t) = < t^2, ln(t), t ln(t) > at a given point, we need to calculate the curvature using the formula:

κ = |dT/ds| / ||dT/ds||,

where dT/ds is the unit tangent vector and ||dT/ds|| is its magnitude.

Let's proceed with the calculations:

Step 1: Find the first derivative of r(t) to get the tangent vector T(t):

r'(t) = < 2t, 1/t, ln(t) + t/t > = < 2t, 1/t, ln(t) + 1 >.

Step 2: Calculate the magnitude of the tangent vector:

||r'(t)|| = sqrt((2t)^2 + (1/t)^2 + (ln(t) + 1)^2)

         = sqrt(4t^2 + 1/t^2 + ln(t)^2 + 2ln(t) + 1).

Step 3: Differentiate r'(t) to find the second derivative:

r''(t) = < 2, -1/t^2, 1/t + 2/t > = < 2, -1/t^2, (t + 2)/t >.

Step 4: Calculate the magnitude of the second derivative:

||r''(t)|| = sqrt(2^2 + (-1/t^2)^2 + ((t + 2)/t)^2)

          = sqrt(4 + 1/t^4 + (t^2 + 4t + 4)/t^2)

          = sqrt((t^6 + 4t^5 + 4t^4) + (t^2 + 4t + 4) + 4t^2).

Step 5: Calculate the curvature:

κ = |dT/ds| / ||dT/ds||

  = (||r'(t)|| / ||r''(t)||^3)

  = ((sqrt(4t^2 + 1/t^2 + ln(t)^2 + 2ln(t) + 1)) / (sqrt((t^6 + 4t^5 + 4t^4) + (t^2 + 4t + 4) + 4t^2))^3).

To find the curvature at a specific point, substitute the value of t into the expression for κ.

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Answer:

~8.5

Step-by-step explanation:

Knowledge Needed

Pythagorean Theorem:

\(a^2+b^2 = c^2\)

Plug in 2 known values to solve.

Question

\(a^2+b^2 = c^2\\(8)^2 + (3)^2 = c^2\)

64 + 9 = c^2

c^2 = 73

Find the square root of both sides.

\(\sqrt{c^2} = \sqrt{73}\)

c = \(\sqrt{73}\)

~8.5

Answer:

c = 8.5

Step-by-step explanation:

The Pythagorean theorem is

\(a^{2} +b^{2} =c^{2}\)

Since we know a and be, we simply square them, then add those values together, and take the square root of the final value

\(8^{2} = 64\)

\(3^{2} = 9\)

\(64 + 9 = 73\)

\(\sqrt{73} = 8.5\)

c = 8.5

Answer: 3:30

Step-by-step explanation:

The mood of the categorical syllogism in example 2 is AIO.

In your example, we have the following premises and conclusion:

1. Major Premise: No dogmatists are scholars who encourage free thinking.
2. Minor Premise: Some theologians are scholars who encourage free thinking.
3. Conclusion: Some theologians are not dogmatists.

The major premise in example 2 is an A proposition (All S are not P). The minor premise in example 2 is an I proposition (Some S are P). The conclusion in example 2 is an O proposition (Some S are not P).

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Ben has to kick the ball about 15.23 meters to reach Clay.

To find the distance between Ben and Clay, we can use the Pythagorean theorem. We need to find the length of the hypotenuse of the right triangle formed by the horizontal and vertical distances between Ben and Clay.

The horizontal distance between Ben and Clay is 7 squares to the right. Since each square is 2 meters long, the horizontal distance is 14 meters.

The vertical distance between Ben and Clay is 3 squares up. Since each square is 2 meters long, the vertical distance is 6 meters.

Using the Pythagorean theorem, we can find the distance between Ben and Clay:

distance = sqrt((14)^2 + (6)^2) ≈ 15.23 meters

Therefore, Ben has to kick the ball about 15.23 meters to reach Clay.

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Answer:

Sunni Muslims accept all four leaders, including Abu Bakr and Ali, as the rightful successors of Muhammad. Shi'a Muslims, also called 'the party of Ali', believe that Muhammad chose Ali as his successor rather than having a bloodline successor.

Imamate is the Shi'a belief that all modern imams should be spiritual descendants of the Prophet Muhammad. Shi’a Muslims believe that imams protect the religion and help to guide Muslims along the right path. Today, Shi'a Muslim communities are led by imams, who are seen as having been chosen by God. Shi’a Muslims believe that imams are exemplary individuals who obey all teachings. Shi’a Muslims believe that imams are inspired by God, are without sin and are infallible, which means that they can interpret the teachings of the Qur’an without making any errors.

Today, Shi’a Muslim communities are led by imams, who are seen as having been chosen by God. Imams should be exemplary individuals who obey all teachings.

Origins of Imamate

After the Prophet Muhammad died, the Muslim community had to choose a successor. Abu Bakr, who was Muhammad’s father-in-law and closest friend, became the leader of the Sunni Muslim community.

Sunni Muslims, who make up around 90 per cent of the global Muslim population, agree that the rightful successor to Muhammad was Abu Bakr, Muhammad’s father-in-law. They recognise two further leaders who came after Abu Bakr. They then recognise a fourth leader, Ali (Muhammad’s cousin). Sunni Muslims accept all four leaders, including Abu Bakr and Ali, as the rightful successors of Muhammad.

Shi’a Muslims, also called ‘the party of Ali’, believe that Muhammad chose Ali as his successor rather than having a bloodline successor. After Ali’s death, Shi’a Muslims were led by twelve imams, whom they believe were spiritual successors to the Prophet Muhammad rather than having any family connection to him. This was the beginning of the Imamate. Shi’a Muslims make up around 10 per cent of the global Muslim population.

Hope this helps..!

Step-by-step explanation:

The area of the rectangle is increasing at a rate of 166 cm^2/s when the length is 15 cm and the width is 13 cm.

To find the rate at which the area of the rectangle is increasing, we need to use the formula for the area of a rectangle, which is A = lw (where A is the area, l is the length, and w is the width).

We can differentiate both sides of the equation with respect to time (t) to obtain:

dA/dt = (dl/dt)w + l(dw/dt)

Here, dl/dt is the rate of change of the length, which is given as 7 cm/s, and dw/dt is the rate of change of the width, which is given as 5 cm/s.

We can substitute these values along with the given values of length and width (l = 15 cm and w = 13 cm) to obtain:

dA/dt = (7 cm/s)(13 cm) + (15 cm)(5 cm/s)

dA/dt = 91 cm^2/s + 75 cm^2/s

dA/dt = 166 cm^2/s

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Answer:

5units

Step-by-step explanation: