Can you help me solve for x in these 3

Answer:

38

Step-by-step explanation:

50 - 12 is 38, so since she had 12 dollars left to spend she had wasted 38 dollars.

Answer:

The answer is: -15 35/51 < -15.6 < - radical 245 < 154/10

Answer:

Rounded to the nearest tenth it's 4.2

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

A does not represent a function because the x-value of 3 appears twice, and by the defenition of a function, the x-value cannot appear twice for it to be considered a function. B could be a function because the x-values are not repeated.

Therefore the answer is B, only B is a function.

The area of the trapezoid with parallel sides of 2 and 8 and a height of 8 is 30 square units.

[IMAGE 1]

To find the area of a trapezoid, we recall the formula:

Area = (1/2) * (a + b) * h

where a and b are the lengths of the parallel sides,  

h is the height of the trapezoid.

From the graph, the parallel sides have lengths of 2 and 8, and the height is 8. i.e:

a = point(y₁, y₂)

a = point(0, -2) = 2 (that is length covered by side a)

b = point(y₁, y₂)

b = point(-4, 4) = 8

h = point(x₁, x₂)

h = point(-2, -8) = 6

Substituting the values into the formula:

Area = (1/2) * (2 + 8) * 6

    = (1/2) * 10 * 6

    = 5 * 6

    = 30

[IMAGE 2]

Since XW is parallel to YZ, then:

∠XWY = ∠WYZ = 2x

Recall that, the sum of angles in a triangle is equal 180°, then

∠YXW + ∠XWY + ∠XYW = 180°

From the image, we can see that ∠XYW is a right-angle, that means

∠XYW = 90°

Substitute the values into the equation above:

Recall:

∠YXW + ∠XWY + ∠XYW = 180

3x - 5° + 2x + 90 = 180

5x + 85 = 180

5x = 180 - 85

5x = 95

x = 95/5

x = 19

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Answer:

1.65

Step-by-step explanation:

Divide 6.6 by 4

The probability that the sample mean of a randomly selected sample of 95 televisions would be less than 118.8 months, given a population mean of 121 months and a variance of 256, can be calculated using the Central Limit Theorem. The calculated probability is 0.1151, rounded to four decimal places.

According to the Central Limit Theorem, the sample mean of a large enough sample size from any population will follow a normal distribution, regardless of the shape of the population distribution. Since the sample size is large (n = 95), we can use the normal distribution to approximate the probability.

The mean of the sample mean is equal to the population mean, which is 121 months. The standard deviation of the sample mean, also known as the standard error, can be calculated by dividing the population standard deviation by the square root of the sample size. In this case, the population variance is given as 256, so the standard deviation is √256 = 16. Therefore, the standard error is 16 / √95 ≈ 1.645.

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Answer:

D(-3, -1)

Step-by-step explanation:

The given coordinates are;

A(-1, -5), B(5, -2) and (1, 1)

The coordinates and the coordinates of the point D form a trapezium

The parallel sides of the trapezium ABCD = AB and DC

The angle ∠BAD = 90°

The coordinates of the point D = Required

Let (x, y) represent the x and y-coordinates of the point D, by the given information, we get;

The slope of the line DC = The slope of the line AB

The slope of AB = (-2 - (-5))/(5 - (-1)) = 3/6 = 1/2

∴ The slope of CD, m = 1/2

From the point C(1, 1),the equation of the line CD is therefore;

y - 1 = (1/2)·(x - 1)

∴ y = x/2 - (1/2) + 1 = x/2 + 1/2

y = x/2 + 1/2

Given that ∠BAD is 90°, therefore, AD is perpendicular to DC and we have;

The slope of AD = -1/m

∴ The slope of AD = -1/(1/2) = -2

From the point A(-1, -5), the equation of the line AD is therefore;

y - (-5) = -2·(x - (-1))

y = -2·x - 2 - 5 = -2·x - 7

y = -2·x - 7

Equating both (simultaneous) values of y to find the value of x gives;

y = y, therefore;

x/2 + 1/2 = -2·x - 7

x/2 + 2·x = 5·x/2 = -7 - (1/2) = -15/2

∴ 5·x/2 = -15/2

x = (-15/2) × (2/5) = -3

x = -3

From y = -2·x - 7, and x = -3, we get;

y = -2 × (-3) - 7 = 6 - 7 = -1

The coordinates of the point D(x, y) = (-3, -1).

Answer:

75%

Step-by-step explanation:

3/4 ie 75/100. .........edge

Answer:

C

Step-by-step explanation:

Since one inch is 7 feet, we can multiply what we have (5 1/2) by 7 and then convert that into feet.

So when we multiply, we get 38.5. So the answer is 38.5 feet once we replace the word inches with feet.

Hence, your answer is C

Answer: 3h + 0.9s

Step-by-step explanation:

90% is the same as 0.9 of..

Answer:

x=5

Step-by-step explanation:

     May I have brainiest I'm trying to level up!

                 </3 PureBeauty

Answer:

x=5

Step-by-step explanation:

6x-3 = 3x +12

+3            +3

6x = 3x +15

-3x   -3x

3x = 15

divided both sides by 3 to get your answer

Answer:

12.73

Step-by-step explanation:

The diagonal of the square forms the shape of a right angle with two adjacent sides of the square.

The diagonal is the hypotenuse.

Pythagoras theorem states that the square of the hypotenuse is equal to the sum of the square of the other two sides of the triangle:

$d^2=a^2+b^2$

where d = hypotenuse = diagonal.

Since the other two sides are equal, then:

$$\begin{gathered} d^2=a^2+a^2 \\ {d}^2=2a^2 \end{gathered}$$

The length of the side of the square is 9:

$$\begin{gathered} d^2=2\ast 9^2 \\ {d}^2=2\ast 81 \\ {d}^2=162 \\ d=\sqrt{162} \\ d=12.73 \end{gathered}$$

The length of the diagonal is 12.73

Answer:

12.73

Step-by-step explanation:

Answer:  3/4

Step-by-step explanation:

1. square root the denominator and nominator, 36= 6 and 64= 8

2. put them together (6/8)

3. simplify 6/8

4. 6/8 divided by 2

5. 3/4 is your answer

Answer:

SAS

Step by Step Explanation:

I know this because im doing the same thing in class rn and just finished an assignment just like this :)

Answer:

Step-by-step explanation:

81-16=?

? times 11

its not hard

The value of Y at x=0 is 4, or 4.

A line's steepness and direction are measured by the line's slope. Without actually using a compass, determining the slope of lines in a coordinate plane can assist in forecasting whether the lines are parallel, perpendicular, or none at all.

Any two different points on a line can be used to calculate the slope of any line.

The ratio of "vertical change" to "horizontal change" between two different points on a line is calculated using the slope of a line formula.

We will comprehend the slope-finding method and its applications in this article.

According to our question-

Y = mx + b is the equation of a linear function, where m is the slope, y is the dependent variable, and x is the independent variable. The equation for the linear function through the point is

Assume that the data has the points (0, 0) and (60, 30). The linear function's equation is as follows:

y=4

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Answer:

(5b-4)1/5 = 5b * 1/5 - 4 * 1/5 = b - 4/5

Answer:

4=x

Step-by-step explanation:

Answer:

Is this a line on a graph with point for x,y.

Step-by-step explanation:

-9 is x and 9 is y

The scale factor for triangle ABC to A'B'C' is 2

The complete question is in the attached image

From the attached image, we have the following corresponding sides

AC = 4 cm

A'C' = 8 cm

The scale factor is then calculated as:

Scale factor = A'C'/AC

This gives

Scale factor = 8cm/4cm

Evaluate the quotient

Scale factor = 2

Hence, the scale factor for triangle ABC to A'B'C' is 2

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The gas used by Abby while travelling in her pizza delivery route is 1/4.

As per the given question here we have to implement the basic principles of subtraction along with application of LCM.

The total amount of gas that Abby had in her car = 11/12

After coming to pizzeria the amount of gas left in her tank = 3/4

Here, we have to perform Subtraction to find out the amount of gas used for travelling. Therefore,

= 11/12 - 3/4

performing the LCM, we get

= 11 - 9/12

= 3/12 => 1/4

The gas used by Abby while travelling in her pizza delivery route is 1/4.

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Answer:

common ratio:2 2. 18  3.36  4.72 equation: 4.5($2^x$)

Step-by-step explanation:

144=2*2*2*2*3*3    9=3*3

the common ratio would be 2

2. 9*2=18

3. 18*2=36

4. 36*2=72

(check) 72*2=144

0. 9/2=4.5

equation: 4.5($2^x$)

The diameter of Earth in kilometers is approximately 12,682 km, making option D the correct answer.

To convert the diameter of Earth from miles to kilometers, we can multiply the given diameter in miles by the conversion factor of 1.6 kilometers per mile.

Given that Earth's diameter is 7,926 miles, we can calculate its diameter in kilometers as follows:

Diameter in kilometers = Diameter in miles × Conversion factor

Diameter in kilometers = 7,926 miles × 1.6 kilometers/mile

Diameter in kilometers = 12,681.6 kilometers

Rounding this value to the nearest whole number, we get 12,682 kilometers.

Therefore, the correct answer is option D: 12,682 km.

Option A: 49,553 km is not the correct answer. It is not consistent with the given diameter of Earth.

Option B: 120,586 km is also not the correct answer. It is not consistent with the given diameter of Earth.

Option C: 1,392,650 km is significantly larger than the actual diameter of Earth and is not a plausible value.

In conclusion, the diameter of Earth in kilometers is approximately 12,682 km, making option D the correct answer.

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To solve this problem, we can use algebraic equations. Let's say that the number of weeks it takes for Ted and Carly to have the same account balance is "w".

Ted's account balance after "w" weeks can be represented by:

300 + 4w

Carly's account balance after "w" weeks can be represented by:

16w

We want to find out when their account balances will be equal, so we can set these two equations equal to each other:

300 + 4w = 16w

Simplifying this equation, we get:

300 = 12w

Dividing both sides by 12, we get:

25 = w

Therefore, it will take 25 weeks for Ted and Carly to have the same account balance.

At least 3 sets must be printed to be sure of having at least 3 identical subsets on the list.

We'll use the Pigeonhole Principle, which states that if there are n items to be placed into m containers, and n > m, then at least one container must hold more than one item.
In this case, we want at least 3 identical subsets.

Since a subset can either include an element or not, there are $2^n$ possible subsets for a set with n elements. To guarantee at least 3 identical subsets, we'll use the Pigeonhole Principle with n+1 as the number of sets (containers) and 3 as the number of subsets we want (items).
Start by finding the minimum number of elements (n) in a set that results in at least 3 identical subsets.
Apply the Pigeonhole Principle formula: n > m,

where n is the number of items (3 identical subsets) and m is the number of containers ($2^n$  possible subsets).
Solve for n: 3 > $2^n$
Increase n until the inequality is satisfied.

In this case, n = 2 works: 3 > $2^2$ (3 > 4).

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Josh should mix 1.2 gallons of dark pink paint and 1.8 gallons of light pink paint to achieve the desired medium pink color.

To find out how much of each leftover paint Josh should mix to achieve a medium pink color (50% red), we can set up a system of equations based on the percentages of red in the paints.

Let's assume that Josh needs x gallons of dark pink paint and y gallons of light pink paint to achieve the desired color.

The total amount of paint needed is 3 gallons, so we have the equation:

x + y = 3

The percentage of red in the dark pink paint is 80%, which means 80% of x gallons is red. Similarly, the percentage of red in the light pink paint is 30%, which means 30% of y gallons is red. Since Josh wants a 50% red mixture, we have the equation:

(80/100)x + (30/100)y = (50/100)(x + y)

Simplifying this equation, we get:

0.8x + 0.3y = 0.5(x + y)

Now, we can solve this system of equations to find the values of x and y.

Let's multiply both sides of the first equation by 0.3 to eliminate decimals:

0.3x + 0.3y = 0.3(3)

0.3x + 0.3y = 0.9

Now we can subtract the second equation from this equation:

(0.3x + 0.3y) - (0.8x + 0.3y) = 0.9 - 0.5(x + y)

-0.5x = 0.9 - 0.5x - 0.5y

Simplifying further, we have:

-0.5x = 0.9 - 0.5x - 0.5y

Now, rearrange the equation to isolate y:

0.5x - 0.5y = 0.9 - 0.5x

Next, divide through by -0.5:

x - y = -1.8 + x

Canceling out the x terms, we get:

-y = -1.8

Finally, solve for y:

y = 1.8

Substitute this value of y back into the first equation to solve for x:

x + 1.8 = 3

x = 3 - 1.8

x = 1.2

Therefore, Josh should mix 1.2 gallons of dark pink paint and 1.8 gallons of light pink paint to achieve the desired medium pink color.

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