Solve -3(x+4) = 7x + 4

Sorry for taking so long :/

Step-by-step explanation:

*Four times the difference of a number and 7 is 32*

Answer-

4(x-7)=32

ten increased by the quotient of a number and 2 is 15-

Answer-

10+(x/2= -15

or

10+x/2=-15

anyone of them

Answer:

It will represent the slope of the graph

Step-by-step explanation:

Here, we are interested in getting what the cost per mile driven represent

From the information, we can represent the cost as;

C = 15d + 39

In this case we have a representation of the cost using the fixed daily cost(y-intercept) and the cost depending on the number of miles driven which will change based on the number of miles.

Since it is changing, it represents the slope of the function for cost

Answer:

0.67

Step-by-step explanation:

correct

Square root of 15.625 is 3.906

What in mathematics is a square root?

A number can be generated by multiplying the square root of that number by itself. The word" square root" is represented by the symbol" sqrt" square root of, end square root. The reverse of squaring a number is chancing the square root.

How is the square root calculated?

The result of multiplying a number by itself yields its square value, while the square root of a number can be set up by looking for a number that, when squared, yields the original value. It follows that a a = b if" a" is the square root of"b."

Find the nearest perfect square, in this case 16 .

Subtract 4 from the number (15.625) (the square root of 16). The outcome is around 3.906

Calculate 3.953 by averaging 4 and 3.906. This approximate value represents the square root of 15.625.

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Answer:

56 m

Step-by-step explanation:

There is a right triangle formed between the height of the tower and Khaled.

The hypotenuse  is the distance from the top of the tower to Khaled's feet

The legs are 33 and height h , then

h² + 33² = 65²

h² + 1089 = 4225 ( subtract 1089 from both sides )

h² = 3136 ( take square root of both sides )

h = \(\sqrt{3136} \) = 56

The height of the tower is 56 m

When you multiply bothsides of an inequality by a negative sign , the inequality sign changes

Answer:

The slope is 0 .

Step-by-step explanation:

Answer:

m=4

x=6

Step-by-step explanation:

1) 4m+12=28

4m=16

m=4

2) 3(x+2)=24

3x+6=24

3x=18

x=6

To find the mean and standard deviation of the corrected pH measurements, we can use the following formulas:

Corrected Mean = (Original Mean + Correction Factor) * Multiplication Factor

Corrected Standard Deviation = Original Standard Deviation * Multiplication Factor

The correction factor is 0.3 and the multiplication factor is 1.4. Therefore, the corrected mean is:

Corrected Mean = (4.8 + 0.3) * 1.4 = 7.14

And the corrected standard deviation is:

Corrected Standard Deviation = 1.2 * 1.4 = 1.68

Therefore, the mean of the corrected pH measurements is 7.14 and the standard deviation is 1.68.

In summary, to find the corrected mean and standard deviation of the pH measurements, we need to add the correction factor (0.3) to the original mean, multiply the result by the multiplication factor (1.4), and multiply the original standard deviation by the multiplication factor. The corrected mean is 7.14 and the corrected standard deviation is 1.68.

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Answer:

Here is the full list of equivalent fractions to 32.  3/2, 6/4, 96, 12/8, 15/10, 18/12, 21/14, 24/16, 27/18, 30/20, 33/22, 36/24, 39/26, 42/28, 45/30, 48/32, 51/34, 54/36, 57/38, 60/40

Step-by-step explanation:

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-8 + 7 = -1

so the answer would be:

-xy or -1xy

Answer:

-xy

Step-by-step explanation:

Add -8xy and 7xy= -xy

Hope this helped! :)

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The points of solution that are obtained for the system of linear equations 3x + 2y = 11 and -8x - 4y = -20 are (-1,7).

2(3x + 2y = 11)

1(-8x - 4y = -20)

3x + 2y - 8x - 4y = 11 - 20 gives -5x - 2y = -9

What is a linear equation?

A linear equation is one that has a degree of 1 as its maximum value. No variable in a linear equation, thus, has an exponent greater than 1. A linear equation's graph will always be a straight line.

The system of linear equations are -

3x + 2y = 11....(1)

-8x - 4y = -20....(2)

When solved initially the value of equation is -

3x + 2y - 8x - 4y = 11 - 20

-5x - 2y = -9

Multiply equation (1) by 2 -

2(3x + 2y) = 2 × 11

6x + 4y = 22.....(3)

Simplify the equation (2) and (3) by adding -

-8x - 4y + 6x + 4y = -20 + 22

-2x = 2

x = -1

Substituting the value of x = -1 in equation (1) -

3x + 2y = 11

3(-1) + 2y = 11

Simplifying the equation -

-3 + 2y = 11

2y = 11 + 3

2y = 14

y = 7

Therefore, the final value is obtained as (-1,7).

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The quotient of a-3/7 / 3-1/21 is 3/2(a - 3)

The quotient of a-3/7 / 3-a/21 is -3

From the question, we are to determine the quotient of the given division operation.

The given division operation is

a - 3/ 7 / 3 -1 / 21

That is,

a - 3/ 7 ÷ 3 -1 / 21

This becomes

a - 3 / 7 × 21 / 3 -1

a - 3 / 7 × 21 / 2

3(a - 3) / 2

= 3/2(a - 3)

If we are to find the quotient of

a - 3/ 7 / 3 -a / 21

This becomes

a - 3/ 7 ÷ 3 - a / 21

a - 3/ 7 × 21 / 3 - a

21(a -3) / 7(3 - a)

3( a - 3) / (3 -a )

Multiply the numerator and the denominator by -1

-1 × 3( a - 3) / -1 × (3 -a )

-3( a - 3) / (-3 + a)

-3( a - 3) / (a - 3)

= -3

Hence, the quotient is -3

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The t- test test's sizes for samples 1 and 2 are n1 and n2, respectively.

What can you infer from a sample t-test?

df for one sample t-test is n-1

where n is sample size

df for independent sample t-test is n1+n2-2

where n1 and n2 are respective sample sizes for sample 1 and sample 2 .

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Answer:

Sine= opp/hyp the oppisite is 27, and the hypotnuse is 45, so the sin of Z is 27/45

Step-by-step explanation:

Answer:

x=1, y=7

Step-by-step explanation:

y = -3x + 10 - first equation

y=-3x + 4 - second equation

rearrange the expression to

-3x-y= -10

3x-y= -4

pick an equation and simplify; lets pick the second equation

3x-y= -4

\(\frac{3x}{3} = \frac{-4+y}{3}\)  

divide 3 by both sides

x= \(\frac{-4+y}{3}\) - third equation

substitute the value of x into an equation; lets pick the first equation

-3x-y= -10

-3\((\frac{-4+y}{3})\)- y = -10

simplify. -3 cancels 3 so we are left with

-1(-4+y)-y = -10

simplify

4-y-y= -10

4-2y= -10

subtract 4 from both sides

-2y= -10-4

-2y= -14

divide -2 by both sides

y=7

substitute the value of y, (y=7) in an equation, we are using the second equation

3x-y= -4

3x-7= -4

3x = -4+7

3x= 3

divide 3 by both sides

x=1

so the answer is x=1, y=7

Answer:

21x + 1

Step-by-step explanation:

f[g(x)]

= f(7x + 2)

= 3(7x + 2) - 5

= 21x + 6 - 5

= 21x + 1

4373 are many fireflies do we need linear equation.

What is an explanation of a linear equation?

If each flash is 0.1 lumens, 40*10 flashes OR 400 flashes equal 40 lumens

P(X>400) = 0.7 (given information)

P(X < 400) = 0.3

P(Z < z0) = 0.3 when z0 = -1.88 (from the z-table)

z0 = -1.88 = (400 - E(X))/V(X)

= -1.88V = 400 - E

= -1.88 √(n*0.1*0.9) = 400 - n*0.1

= -1.88*0.3√n = 400 - 0.1n

= 0.1n - 0.564√n - 400 = 0

n  = 4373

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Answer:

$900.929

Step-by-step explanation:

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Answer:

- 1

Step-by-step explanation:

Multiplying a negative quantity by a negative quantity results in a positive.

Also multiplying by 1 leaves the other value as is, then

- 1 × - \(\frac{7}{11}\) = \(\frac{7}{11}\)

Answer:

you need 40 g of fat

Step-by-step explanation:

:) hope this helps

Some examples of equivalent fractions to -3/2 are:

-3/2 = -6/4

-3/2 = -15/10

To find an equivalent fraction to a fraction a/b, we need to multiply/divide both numerator and denominator by the same real number (except for zero).

Then for example if we have -3/2, we can multiply both numerator and denominator by 2, and we will get an equivalent fraction:

(-3*2)/(2*2) = -6/4

Or if we multiply both by 5:

(-3*5)/2*5 = -15/10

These are some examples of equivalent fractions.

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The domain of the function is -∝ <= x <= ∝, while the range is y >= 0

Quadratic equations are second-order polynomial equations and they have the form y = ax^2 + bx + c or y = a(x - h)^2 + k

The equation of the function is given as

f(x) = 3/8x^2

The above equation is a quadratic function

This is so because it has a degree of 2

Next, we plot the graph of the function (see attachment)

From the attached graph, we observe that

Hence, the domain of the function is -∝ <= x <= ∝, while the range is y >= 0

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joe runs each lap in 6 minutes, we can express the total time as 6n where n is the number of laps.

A relationship that compares two numbers or other mathematical expressions in an unequal way is known as an inequality. It is most frequently used to compare the sizes of two numbers on the number line.

A less than symbol a < b indicates that an is less than b.

A greater than b is indicated by the notation a > b.

He will run at most 66 minutes, "at most" means less than or equal.

Forming an inequality will be :

\(6n\) \(\leq\) \(66\)

Since he won't exceed 66 minutes.

The value of n will be :

\(6n\) \(\leq\) \(66\)

\(n\) \(\leq\)  \(\frac{66}{6}\)

\(n \leq 11\)

The answer is n ≤ 11

Hence, the possible number of laps he will run today  is 11

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Given that the shape of the distribution of the time required to get an office through (c) ta 15-minute change facility is skewed right. However, records indicate that the mean time is 16.4 minutes, and the standard deviation is 36 minutes.

To compute probabilities regarding the sample mean using the normal model, The normal model can be used if the sample size is greater than or equal to 30. The answer is option D.The central limit theorem states that if the sample size is large enough, the distribution of the sample means will be approximately normal, regardless of the shape of the population distribution, and the mean of the sample means is equal to the mean of the population.

The standard deviation of the sample means is equal to the standard deviation of the population divided by the square root of the sample size. When the sample size increases, the standard deviation of the sample means decreases, and the distribution of the sample means becomes more and more normal.

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Answer:

Domain: All real numbers greater than or equal to 0 and less than or equal to 50

Range: All real numbers greater than or equal to 0 and less than or equal to 100

Step-by-step explanation

The workout is at 100% at 50 mins. Anything less would be under these two numbers.  Since the percentage of workout is on the y-axis, anything between zero and 100 can be possible. The time is on the x-axis, so anything 0 to 50 can be possible.  

Answer:

D

Step-by-step explanation:

Estimating 1,596 will give you 1,600. Estimating 42 will give you 40. Dividing 1,600 ÷ 40 will give you 40. So, the answer would be D.

The formula for the volume of a cone is:

V = (1/3)πr²h

where r is the radius of the base, h is the height of the cone, and π is pi.

In this case, the slant height is given as 17 cm, which we can use with the radius to find the height of the cone using the Pythagorean theorem:

h² = s² - r²

h² = 17² - 8²

h² = 225

h = 15

Now that we have the height, we can plug in the values for r and h into the formula for the volume:

V = (1/3)π(8²)(15)

V = (1/3)π(64)(15)

V = (1/3)(960π)

V = 320π

Therefore, the volume of the cone is 320π cubic cm. Answer: 320π.