Pls help I’m close finishing this assignment

A. No, Alexandra made a mistake going from the given expression to Step 1. Alexandra should have added 18 and 3 before evaluating the exponent. The order of operations says to perform operations inside parentheses before you evaluate exponents.

B. No, Alexandra made a mistake going from Step 1 to Step 2. Alexandra should have divided 9 by 9 before adding. The order of operations says to divide before you add.

C. Yes, Alexandra's work is correct.

The area of tiles taken to cover the pedestal, including the bottom is 1176 cm².

A triangular prism's surface area is also referred to as its total surface area. A triangular prism's total surface area is the sum of the areas of all its faces. A triangular prism consists of two triangular faces and three rectangular faces.

Surface area = (Perimeter of the base × Length of the prism) + (2 × Base Area) = (S1 +S2 + S3)L + bh

where,

b is the base triangle's bottom edge, h is its height, L is its length, and S1, S2, and S3 are the three edges (sides) of the base triangle (bh).

[2 (1/2 bh)] = bh is the area of the two triangular faces

Given:

From the figure, we can say that the pedestal is in form of a triangular prism.

To find the area of the tile that it takes to cover the pedestal, including the bottom we have to determine the surface area of the pedestal.

So from the figure,

The side lengths of the triangular base are:

S1 = S2 = 10 cm

S3 = 16 cm

Base of prism = 16 cm

Height of prism = 6 cm

Length of prism = 30 cm

Surface area = (S1 +S2 + S3)L + bh

                      = (10+10+16)30 + 16×6  

                     = 1176 cm²                  

To learn more about triangular prism visit:

https://brainly.com/question/2655859

#SPJ13

An inverse variation is represented as:

To find the missing value we need to find k first. Using the first pair we have:

Now, we plug the value of k and use the second pair to find y:

Therefore, y=24/5.

Answer:

14/5 or, 2 4/5.

Step-by-step explanation:

4/5 + 3/5 = 7/5, 7/5 + 7/5 = 14/5

14/5 as a mixed number is 2 4/5.

I think you're talking about fractions so.

The amount of jumping packs in 1 minute is 21

From the question, the given parameters are:

Number of jumping packs in a row = 84 packs

Number of minutes = 4 minutes

The amount of jumping packs in 1 minute is the quotient of the number of jumping packs in a row and the number of minutes

This is represented as

Jumping packs in 1 minute = Number of jumping packs in a row /Number of minutes

Substitute the known values in the above equation

Jumping packs in 1 minute = 84/4

Evaluate

Jumping packs in 1 minute = 21

Hence, the jumping packs in 1 minute is 21

Read more about unit rates at

https://brainly.com/question/4895463

#SPJ1

The record holder makes 21 jumping jacks in 1 minute which is the ratio of the number of jumping jacks performed in a row to the total number of minutes.

A ratio is a relationship between two amounts that is represented by the division of one by the other.

The ratio of the total number of jumping jacks performed in a row to the total number of minutes determines how many jumping jacks should be performed in a minute.

No. of jumping packs in a row = 84 packs

No. of minutes = 4 minutes

So jumping packs in 1 minute = 84/4

Apply the division operation to get

Jumping packs in 1 minute = 21

Therefore, 21 jumping jacks should be performed in 1 minute.

Learn more about the Ratios here:

brainly.com/question/1504221

#SPJ1

Answer:

y + 2 = 2/3(x - 0)

Step-by-step explanation:

The general form of an equation of line with slope m, passing through point (x1, y1) is:

y - y1 = m(x - x1)

substituting values:

y - (-2) = 2/3(x - 0)

simplify

y + 2 = 2/3(x - 0)

Answer:

where

m(Gradient or slope) =2/3

y1=-2

x1=0

Answer: False!

Step-by-step explanation:

Answer:

false

Step-by-step explanation:

Rhombus as a quadrilateral with equal sides. The angles may or may not be right-angled.

However, a square is a quadrilateral with equal sides and all angles are right angles.

Hence, every square is a rhombus but the opposite is not true.

Right Triangles

A right triangle is identified because it has an interior angle of 90° (right angle). The other two angles must be acute and add up to 90°.

In the special case that both acute angles have a measure of 45°, then we have an isosceles triangle, that is, both legs have the same length.

We can see one of the legs measures

Being this an isosceles triangle, the other leg (the base of the triangle) also measures L, thus you should drag

To the box at the bottom.

The other unknown length is the hypotenuse H. According to the Pythagorean's Theorem:

Substituting:

You should drag the length 10 to the hypotenuse.

Let's use the variable x to represent the number of pizzas Ms. Ruggiero can buy.

If each pizza is $8.75, the wings are $4.25, the tax is 9.25% and the tip is 15%, and all this needs to be lesser than or equal 50, we have the inequality:

So Ms. Ruggiero can buy 4 pizzas with $50.

Answer:

1 = yes

2 = no

3 = no

4 = yes

5 = yes

6 = no

7 = no

8 = no

The sample standard deviation formula is

square root {(Σ(X - mean)²) / (N - 1)}

What the student did wrong?

The square root sign was not included in their calculation

The correct value of the sample standard deviation is = 3.08

Standard deviation shows the by how much the values differs from the mean.

The calculation is done by forming the table and calculating the required variables as below:

X        (X - mean)²

8              25

1                 4

3                0

0                9

3                0

ΣX = 15

mean = ΣX/N = 15/5 = 3

Σ(X - mean)² = 38

Σ(X - mean)² / (N-1)

= 38 / 4

= 9.5

Sample standard deviation = √9.5

= 3.08

Learn more about sample standard deviation here: https://brainly.com/question/12784053

#SPJ1

ANSWER:

x = 4 and x = -4

STEP-BY-STEP EXPLANATION:

We have the following function:

We solve the values of x for when the function is equal to 0, as follows:

Explanation:

Since L is the midpoint of JM, then JL = LM.

Therefore,

Statement: JL = LM

Reason: L is the midpoint of JM

The lines JK and NM are parrallel; therefore, by the alternate interior angles theorem,

Furthermore, since ∠JLK and ∠MLN are vertical angles,

Now since ∠JLK = ∠MLN, ∠LJK = ∠LMN, and JL = LM, then by ASA postulate

Hence, our proof is complete!

Conditional equations - Mischa's dives take her 6.5 meter

What are conditional equations?

An equation that holds true for one or more values of the variable but holds false for other values of the variable is known as a conditional equation.

Explain the airthematic mathematical operations.

it deals with the study and use of numbers in all other branches of mathematics.  Basic operations include +,-, x, and /.

We frequently employ these fundamental mathematical operations in our daily lives: +, -,x, and, /. For every such area of our lives, we apply mathematical operations, whether it be to figure out the annual budget or distribute things evenly to a lot of people.

Mischa dives from a platform that is 5 meters above the water.

Her dive take her 1.7 meters below the surface of the water.

The total distance of Mischa's dive take her will be,

5+1.7meters

=6.7 meter

thus Mischa's dives take her 6.5 meters far.

to learn more about conditional equations visit:

https://brainly.com/question/28263186

#SPJ9

Simple interest is a clear and simple method for computing financial interest. Simple Interest is the amount returned for using the borrowed funds over a predetermined amount of time.

Simple interest is, by definition, the amount of interest paid on a specific principal sum of money when an interest rate is applied. Compound interest, on the other hand, is the interest that is computed using both the principal and the interest that has accumulated over the preceding period.

Simple Interest is the amount returned for using the borrowed funds over a predetermined amount of time.

A = P(1 + rt)

Simple interest is a method for figuring out how much interest was paid on a sum of money during a specific time period at a specific rate. Simple interest has a constant principle amount. Simple interest is a clear and simple method for computing financial interest.

Therefore, the correct answer is option D. $715.15.

To learn more about Simple interest refer to:

https://brainly.com/question/25793394

#SPJ13

we have that

B=5 degrees

C=125 degrees

b=200 units

step 1

Find out the measure of angle A

Remember that

the sum of the interior angles in any triangle must be equal to 180 degrees

so

A+B+C=180

substitute given values

A+5+125=180

A=180-130

A=50 degrees

step 2

Applying the law of sines

Find out the value of a

substitute given values

solve for a

a=1,757.9 units

step 3

Find out the value of c

substitute given values

The given inequality is expressed as

Solution

For this case we need to select a sample of students from the class

We can ask to each student how much time spend on average watching tv at night

From the results we can take the average and the standard deviation and we can use a t-test to test the statement

A graph which represents the solutions to this quadratic equation (x² + 8x = -20) is: B. Linear-quadratic system graph shows upward parabola with vertex at (minus 4, 4) and passing through (minus 2, 8), and (minus 6, 8).

A graph can be defined as a type of chart that's commonly used to graphically represent data on both the horizontal and vertical lines of a cartesian coordinate, which are the x-axis and y-axis.

In Mathematics, the graph of any quadratic function or equation always forms a parabola because it is a u-shaped curve.

In conclusion, we can reasonably infer and logically deduce that the given quadratic equation is modeled by an upward parabola with its vertex at (-4, 4) as shown in the graph attached below.

Read more on graphs here: brainly.com/question/4546414

#SPJ1

Answer: The answer is that 50 ÷ (-8) is greater

Answer:

-6 x 1.5 < 50 ÷ (-8)

-6 x 1.5 = -9

50 / -8 = -6.25

50 divided by -8 is greater than -6 times 1.5p

Step-by-step Explanation:

=D

Answer

Yes

Step-by-step explanation

Given the expression:

Combining similar terms:

Multiplying:

Exponents and powers are terms that occasionally get used interchangeably, which can be confusing.

Mathematics uses expressions called powers, where n is the exponent and x is the base. When a number or variable is multiplied repeatedly, it is referred to as a power. The exponent of power tells us how many times to multiply the base by itself.

You can interpret the term as "x to the power." The exponent (n) is written smaller and at the head of the line using superscript, whereas the base (x) is printed in full size (if you are typing it on a computer). For instance, it is written as x squared or x to the second power, which in reality means that the value of x is multiplied by an amount equal to the exponent's value.

If the base is a number: In this situation, all you have to do to discover the solution is multiply the base by itself as many times as the exponent's value.

If the base is a variable, you must first replace the variable with a value before continuing.

Learn more about powers and exponents at

https://brainly.com/question/15722035?referrer=searchResults

#SPJ1

Hay, this is the solution:

Length of the box = increased 30%

Height = Increased 25%

Width = Remains the same

Volume of the value box = 1.3 * 1.25 * 1

Volume of the value box = 1.625

Volume of the regular box = 1 * 1 * 1

Volume of the regular box = 1

Percentage of increase = 1.625/1 - 1

Percentage of increase = 0.625

Percentage of increase = 62.5 = 63% (Rounded to the nearest p

The simple interest formula is:

A = P(1 + rt)

where A is the final amount, P is the princiapal, r is the annual interest rate (as a decimal), and t is time in years.

Substituting with A = $4,440, P = $3,000, and r = 0.12 (= 12/100), we get:

Let:

A = (-4,3)

B = (-1,3)

C = (-1,1)

after a 90 clockwise rotation:

A = (-4,3)--------->(y,-x)------->(3,4)

B = (-1,3)----------->(y,-x)------>(3,1)

C = (-1,1)------------>(y,-x)------>(1,1)

After a translation 3 units down and 2 units left:

(3,4)------>(x-2,y-3)------->(1,1)

(3,1)------>(x-2,y-3)------->(1,-2)

(1,1)------>(x-2,y-3)------->(-1,-2)

---------------------------

Therefore, the answer is D

We are given the following system of equations:

To solve the system we will add equations (1) and (2):

Adding like terms:

Now we multiply equation (2) by -2:

Now we add this equation to equation (3):

Adding like terms:

Now we add equations (4) and (5):

Adding like terms:

Dividing both sides by -2:

Now we replace this value of "x" in equation (4):

Subtracting 1 to both sides:

Now we replace the values of "x" and "y" in equation (1):

Adding like terms:

Subtracting 5 to both sides:

Therefore, the solution of the system is:

,By following these steps, we can find the value of this expression:

first we multiply both -2 and 3 by their corresponding fractions, we do this by just multiplying the numbers with the numerator of the fraction, like this:

Now simplify the fractions:

To sum fractions, we have to make sure that the denominators are the same, this is not the case, we can make their denominators the same by dividing and multiplying the two by two, like this:

Now, we just have to sum up the numerators, like this:

Then, the value of this expression is:

Solution:

Amount needed (P): $9,350

Time in years (n): 3

Interest (r): 5%

Compounded: semiannually

To find the Amount (A).

we have the formula A, we get,

The present value is $10,843.133

Answer:

4

Step-by-step explanation:

The solution to the equation means that the coordinate satisfy the equation. Given that the equation is y= x +5, we know the relationship between the y-coordinate (y) and the x-coordinate (-1) of the point.

y= x +5

Substitute the coordinates into the equation:

When x= -1, y= y,

y= -1 +5

y= 4

Thus, the value of y is 4.

For a similar question on finding coordinates given the equation, check out: https://brainly.com/question/28866984

Answer:

y=-4/3x

Step-by-step explanation:

There is no b because it starts at the origin.

Answer:

-4/3x is the correct answer as provided by IceJadeKitsune

I am merely providing an explanation in case you are curious

Step-by-step explanation:

The equation for a line in slope-intercept form is

y = mx + b

where m is the slope and b the y-intercept

The slope of a line, m can be determined by what is called the rise/run ratio

The process is as follows

From the graph choose points origin (0, 0)  which is one point where the line crosses the y axis

From the graph we see that another distinct point where the line passes is at x = -3, y = 4 or the point(-3, 4)

Having got these two points we calculate
rise = 4 - 0 = 4
run = -3 - 0 = -3
Slope m = -4/3

Slope is negative because as y increases, x decreases

So the equation is y = -4/3x + b

Looking at the graph, we see that b = 0 since the graph passes through the origin as correctly stated by  IceJadeKitsune


Therefore the equation of the line is [tex]\boxed{\bold{y = -\dfrac{4}{3}x}}[/tex]