I don't know how to do this please help explain how to do it aswell as give the answer so i understand

Answer:

x = 63

Step-by-step explanation:

From the question, we can deduce the following points;

- 12 less than x which simply means 12 subtracted from x.

- the value of the above expression is equal to 51.

Translating the word problem into an algebraic expression, we have;

x - 12 = 51

Rearranging the equation (collecting like terms), we have;

x = 51 + 12

x = 63

Answer:

Area = 77ft²

Perimeter = 44 9/20 feets feets

Step-by-step explanation:

Area of a triangle = 1/2 * base * height

Base = 19 1/4 feets = 77/4 feets

Height = 8 feets

Area = 1/2 * 77/4 * 8

Area = (77 * 8) / 8

Area = 77 feet²

Perimeter of a triangle :

Sum of the sides

Perimeter = a + b + c

Perimeter = 19 1/4 + 10 + 15 1/5

Perimeter = 44 + (1/4 + 1/5)

Perimeter = 44 9/20 feets

Step-by-step explanation:

8(2x-7) =8

16x - 56 = 8

16x = 64

x = 4

1). Distribute 8 and multiply.

2). Add 56 to both sides.

3). Divide both sides by 16.

Let me know of you have any questions!

Answer: Divide both sides by 88.

2x-7=1

2x−7=1

2 Add 77 to both sides.

2x=1+7

2x=1+7

3 Simplify  1+71+7  to  88.

2x=8

2x=8

4 Divide both sides by 22.

x=\frac{8}{2}

x=

2

8

​

5 Simplify  \frac{8}{2}

2

8

​

  to  44.

x=4

x=4

Step-by-step explanation:

Answer:

Following what?

Step-by-step explanation:

I'll go with Sales Tax

Answer:

$7.125

Step-by-step explanation:

1 lb = 16 oz

Cost per ounce

19 / 16 = $1.1875/oz

Cost for 6 oz portion

6 * 1.1875 = $7.125

Answer:

A)-10/-7 I hope the answer is correct . I will be happy when I get 5 points

Answer:16:20

Step-by-step explanation:

Step-by-step explanation:

50% × 1/3

= 1/2 × 1/3

= 1/6

-------

Answer:

11.46 meters

Step-by-step explanation:

12min 30sec = 12.5min

55km/h * 12.5min * 1h/60min = 11.4583333333meters

Answer:

t ≤ 225r

Step-by-step explanation:

Distance = 225 miles

Time taken = t

Average speed = r miles per hour

Recall :

Speed = distance / time

Time, = distance / speed

t = 225 miles / r

All possible values of t :

t ≤ 225r

Answer:

20%

Step-by-step explanation:

She needs to improve her average by the difference between her 2 grades

That difference is 15 points and is a 20% increase

Using the fromula for increase/ initial value x 100= new %

so (90-75)/75 x 100 = 15/75 x 100 which is then equal to 20%

Answer:

D. Part of the solution region includes a negative number of erasers purchased; therefore, not all solutions are viable for the given situation.

Step-by-step explanation:

I got it right on the practice

Answer:

Part of the solution region includes a negative number of erasers purchased; therefore, not all solutions are viable for

the given situation.

Answer:

the answer is 144(that is 6×24)

Answer:

c. golden mean

Answer:

The area of the screen at AT&T Stadium is 4,480 square feet.

Step-by-step explanation:

Given that the screen at Dallas' AT&T Stadium is 175 feet wide, and a movie theater screen with similar dimensions is 40 feet wide with a screen area of 1,024 ft², to determine what is the area of the screen at AT&T Stadium the following calculation must be done:

40 = 1,024

175 = X

175 x 1,024 / 40 = X

179,200 / 40 = X

4,480 = X

Thus, the area of the screen at AT&T Stadium is 4,480 square feet.

Answer:

y=41−11x

Step-by-step explanation:

The equation of the line in the slope-intercept form is y=5−11x.

The slope of the parallel line is the same: m=−11.

So, the equation of the parallel line is y=−11x+a.

To find a, we use the fact that the line should pass through the given point: −3=(−11)⋅(4)+a.

Thus, a=41.

Therefore, the equation of the line is y=41−11x.

Answer: y=41−11x.

Answer:

y=41−11x

Step-by-step explanation:

The equation of the line in the slope-intercept form is y=5−11x.

The slope of the parallel line is the same: m=−11.

So, the equation of the parallel line is y=−11x+a.

To find a, we use the fact that the line should pass through the given point: −3=(−11)⋅(4)+a.

Thus, a=41.

Therefore, the equation of the line is y=41−11x.

Answer:

b.

Step-by-step explanation:

Parallel lines have the same slope.

Answer:

10.21 and it represents positive credit

Step-by-step explanation: hope this helps <3

Answer:

D) - 8

Step-by-step explanation:

If the function graphed is the right function and the question is asking for f(4), this means the question is just asking for the y value when x is equal to 4. Looking at the graph, we can see this is -8.

Answer:

0.8254 = 82.54% probability that the mean of this sample is between 19.25 hours and 21.0 hours

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean of 20 hours, standard deviation of 6:

This means that [tex]\mu = 20, \sigma = 6[/tex]

Sample of 150:

This means that [tex]n = 150, s = \frac{6}{\sqrt{150}}[/tex]

What is the probability that the mean of this sample is between 19.25 hours and 21.0 hours?

This is the p-value of Z when X = 21 subtracted by the p-value of Z when X = 19.5. So

X = 21

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{21 - 20}{\frac{6}{\sqrt{150}}}[/tex]

[tex]Z = 2.04[/tex]

[tex]Z = 2.04[/tex] has a p-value of 0.9793

X = 19.5

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{19.5 - 20}{\frac{6}{\sqrt{150}}}[/tex]

[tex]Z = -1.02[/tex]

[tex]Z = -1.02[/tex] has a p-value of 0.1539

0.9793 - 0.1539 = 0.8254

0.8254 = 82.54% probability that the mean of this sample is between 19.25 hours and 21.0 hours

Answer:

Slope=-3/4

Step-by-step explanation:

The slope is the rise/run or y/x

Points given for A are (-4, 3), for B (4, -3)

The formula for slope is m=y^2-y^1/x^2-x^1

https://calcworkshop.com/graphing-linear-equations/slope-formula/

So we'll plug in the information given into the formula.

-4-4/3--3

-8/3+3

-8/6

so our slope is m=-3/4

Answer:

Step-by-step explanation:

x+a=c

x=c-a

Answer:

2x³ -5(x²-5)

Step-by-step explanation:

2x3 − 5x2 + 25

=2x³ -5x²+25

=2x³ -5(x²-5)

Answer:

3,4 by feet by feet and abroad ahed

We can solve this by substitution method.

Look at the second equation. If we rearrange to find 7x, we can substitute in the value into the first equation.

[tex]5y-7x=12[/tex]

[tex]5y-7x-12=0[/tex]

[tex]5y-12=7x[/tex]

Therefore, [tex]7x=5y-12[/tex]

Now replace the 7x in the first equation with 5y - 12:

[tex]2y+7x=-5[/tex] (substitute in 7x = 5y - 12)

[tex]2y+(5y-12)=-5[/tex]

[tex]7y-12=-5[/tex]

[tex]7y=7[/tex]

[tex]y=1[/tex]

Now that we know y, we can find x by substituting in y = 1 into any equation we want. I will use the equation: 7x = 5y - 12

[tex]7x=5y-12[/tex] (substitute in y = 1)

[tex]7x=5(1) -12[/tex]

[tex]5x=5-12[/tex]

[tex]7x=-7[/tex]

[tex]x=-1[/tex]

__________________________________________________________

Answer:

[tex]y=1\\x=-1[/tex]

Answer:

C. Translates the graph 4 units downwards

Step-by-step explanation:

The -4 is the y-intercept which brings the graph down four units

In the function f(x)=[tex]\sqrt{x}[/tex]-4, -4 shows the translation of graph units downwards which is option c.

Function is relationship between two or more that are variables that are expressed in equal to form. In a function each value of x must have a corresponding value of y which is known as codomain of function.

In the function f(x)=[tex]\sqrt{x}[/tex]-4, -4 decreases the value of function by 4 units and because the y axis is vertical line. So the value which is  -4 pulls the function downwards by 4 units and this process is known as translation.

Hence in the function f(x)=[tex]\sqrt{x}[/tex]-4, -4 shows the translation of graph units downwards which is option c.

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Answer:

D. Line

Step-by-step explanation:

If there are equals -pi/6 and nothing else then it’s going to be a line.

The shape graphed by the function Ф = [tex]\frac{-\pi }{6}[/tex] is a line .

The graph of a function f is the set of all points in the plane of the form (x, f(x)). We could also define the graph of f to be the graph of the equation y = f(x). So, the graph of a function if a special case of the graph of an equation.

A constant function is a function whose value is the same for every input value. For example, the function y(x) = 4 is a constant function because the value of y(x) is 4 regardless of the input value x. The graph of the constant function y = c is a horizontal line in the plane that passes through the point (0, c).

According to the question

The name of the shape graphed by the function

Ф = [tex]\frac{-\pi }{6}[/tex]

As we can see that Ф is a constant function

and per definition of constant function :

A constant function is a function whose value is the same for every input value and the graph of the constant function y = c is a horizontal line in the plane that passes through the point (0, c).

i.e

graphed by the function

Ф = [tex]\frac{-\pi }{6}[/tex]

will be a horizontal line which passes through point (0, [tex]\frac{-\pi }{6}[/tex] )

Hence, the shape graphed by the function Ф = [tex]\frac{-\pi }{6}[/tex] is a line .

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Answer:

B. All non zero real numbers

Step-by-step explanation:

I calculated it logically