Find the total surface area of this object

Answer:

x=3 y=-1

Step-by-step explanation:

substitute into one of the equations: 4x+2x-7=11

rearrange unknown terms to the left side of the equation: 4x+2x=11+7

combine like terms: 6x=18

divide both sides by x: x=18/6

calculate to product: x=3

Same thing for y:

y=2x3-7

y=6-7

y=-1

Solution:

x=3

y=-1

Answer:

As the height of the stairs starting from the bottom gets progressively taller by increments of 7, the height will vary. So we've got to be cautious when finding the volume for each and every individual step, especially the height.

Finding volume for the first step on the stairs;

Height: 7

Width: 40

Length: 10

Multiply:- (7 x 40 x 10) = 2,800

Finding volume for the second step on the stairs;

Height: 14 (the 7 doubled because it got taller)

Width: 40

Length: 10

Multiply:- (14 x 40 x 10) = 5,600

Finding volume for the third step on the stairs;

Height: 21 (the height of 7 tripled)

Width: 40

Length: 10

Multiply:- (21 x 40 x 10) = 8,400

Now we add all the volumes we've gathered so far;

2,800 + 5,600 + 8,400

= 16,800 cubic inches

Answer:

Step-by-step explanation:

Answer:

5 days

Step-by-step explanation:

1/2 + 1/2 = 3 (2 days) times by 2 makes it 4 days and finally 5th day 7 1/2

it will take him about 5 days

1 1/2 x 5 is 7 1/2

Answer: The Pyramid has 2 pairs of congruent faces

Step-by-step explanation:

The explanation of congruent is the face has the same shape and same size. On rectangle pyramid, the height triangle are 2 same faces and 2 same faces, so it has 2 pairs of congruent faces

Answer:

Step-by-step explanation:

First quartile is 10

80-70=10

Answer:

got 1 for the first one and I got decrease

hope this helps

By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042

Answer:

By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042

Step-by-step explanation:

Answer:

D) AB = AB  

Step-by-step explanation:

The reflexive property states that a value is equal to itself: x = x.

The reflexive property of length states that a length is equal to itself:

AB = AB

A) and C) are wrong. They represent the reflexive property of angles.

B) is wrong. It represents the symmetric property of length.

Answer:

D

Step-by-step explanation:

Answer: b and e

Step-by-step explanation:

Answer: $4000

Step-by-step explanation:

In the age of cars you go 9.5 and then go up till you reach a part of the line.  In that, you can see that 9.5 goes up and reaches the line at $4000.

The predicted price you would pay if you purchase one of these cars that is 9.5 years old is 4000.

A scatter plot is a graphical representation of bivariate data that uses dots to represent values for two different variables.

The data for each observation is represented by the position of the dot on the x-axis and y-axis.

The x-axis represents one variable and the y-axis represents the other variable.

Scatter plots are commonly used to observe relationships between variables, such as correlations or trends, and to identify outliers or patterns in the data.

We have,

To predict the price you would pay for a car that is 9.5 years old, you need to look at the scatter plot and find the point that corresponds to an age of 9.5 years.

Once you have identified that point, draw a vertical line from that point to the line of best fit (or draw the line of best fit if it's not already on the plot).

Next, draw a horizontal line from the point where the vertical line intersects the line of best fit to the y-axis.

This will give you an estimated price for a car that is 9.5 years old based on the data in the scatter plot.

Now,

We see that,

At 9.5 years, the vertical line and the horizontal line correspond to a resale value of 4000.

Thus,

The predicted price you would pay if you purchase one of these cars that is 9.5 years old is 4000.

Learn more about scatter plots here:

https://brainly.com/question/30646450

#SPJ2

Answer:

D.) Mode

Step-by-step explanation:

It best represents the data as it has the highest value in the distribution. All other measures of central tendency have lower values in the data.

Sorry if Im wrong

Answer: In mathematics, a variable is a symbol which functions as a placeholder for varying expression or quantities, and is often used to represent an arbitrary element of a set. In addition to numbers, variables are commonly used to represent vectors, matrices and functions

Step-by-step explanation:A symbol for a value we don't know yet. It is usually a letter like x or y.

Example: in x + 2 = 6, x is the variable.

Why "variable" when it may have just one value? In the case of x + 2 = 6 we can solve it to find that x = 4. But in something like y = x + 2 (a linear equation) x can have many values. In general it is much easier to always call it a variable even though in some cases it is a single value.

The literal numbers like- x,y,z etc. are variables.

Eg - 4x - 7 = 5

Here in this example x is the variable.

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Step-by-step explanation:

first off: write the formula that you would be using, which in my case would be

A = B x H

the B stands for base, and the H stands for height

the base of the shape would be 14.3 in

while the height is the dotted line in the middle (which would be 14.4 in)

to find the answer you would write it like this:

A = B x H = 14.3in x 14.4in

= (conversion to other form of measurement if necessary)

= 205.92 in

(answer may be wrong as it was calculated with calculator app)

Answer:

Factor: 36

Step-by-step explanation:

Ratio of sides

1 : 6

Ratio of areas

1² : 6²

1 : 36

Your Answer is 13.076

have a good day

Answer:

\(-2\sqrt{2}-2 < a < 2\sqrt{2}-2,\;\;a\neq0\)

Step-by-step explanation:

Given quadratic equation:

\(ax^2 + (2a + 2)x + a + 3 = 0\)

To find the possible values of "a" such that the given equation has two roots and the distance between them on the number line is greater than 1, use the quadratic formula.

\(\boxed{\begin{minipage}{4 cm}\underline{Quadratic Formula}\\\\$x=\dfrac{-b \pm \sqrt{b^2-4ac}}{2a}$\\\\when $ax^2+bx+c=0$ \\\end{minipage}}\)

Comparing the coefficients:

Substitute the coefficients into the quadratic formula:

\(x=\dfrac{-(2a+2) \pm \sqrt{(2a+2)^2-4a(a + 3)}}{2a}\)

Simplify the discriminant (the part under the square root sign):

\(x=\dfrac{-(2a+2) \pm \sqrt{-4a+4}}{2a}\)

Factor out 4 from the discriminant:

\(x=\dfrac{-(2a+2) \pm \sqrt{4(-a+1)}}{2a}\)

\(\textsf{Apply the radical rule:} \quad \sqrt{ab}=\sqrt{a}\sqrt{b}\)

\(x=\dfrac{-(2a+2) \pm \sqrt{4}\sqrt{-a+1}}{2a}\)

Therefore:

\(x=\dfrac{-(2a+2) \pm 2\sqrt{-a+1}}{2a}\)

Factor out the common term 2:

\(x=\dfrac{-(a+1)\pm \sqrt{-a+1}}{a}\)

Therefore, the two solutions are:

\(x=\dfrac{-a-1+\sqrt{-a+1}}{a},\;\;x=-\dfrac{a+1+\sqrt{-a+1}}{a}\)

As both solutions have "a" as their denominator, a ≠ 0.

Note: When substituting a = 0 into the original equation, we are left with a linear equation, which only has one root. Therefore, this confirms that a ≠ 0.

Now we have found expressions for the two roots, we can set the distance between them to greater than 1:

\(\dfrac{-a-1+\sqrt{-a+1}}{a}-\left(-\dfrac{a+1+\sqrt{-a+1}}{a}\right) > \:1\)

\(\dfrac{-a-1+\sqrt{-a+1}}{a}+\dfrac{a+1+\sqrt{-a+1}}{a} > \:1\)

Simplify:

\(\begin{aligned}\dfrac{-a-1+\sqrt{-a+1}+a+1+\sqrt{-a+1}}{a}& > 1\\\\\dfrac{2\sqrt{-a+1}}{a}& > 1\\\\2\sqrt{-a+1}& > a\\\\(2\sqrt{-a+1})^2& > a^2\\\\4(-a+1)& > a^2\\\\-4a+4& > a^2\\\\a^2+4a-4& < 0\\\\(a+2)^2-8& < 0\\\\(a+2)^2& < 8\end{aligned}\)

\(\textsf{For\;\;$u^n < a$,\;\;if\;$n$\;is\;even\;then\;\;$-\sqrt[n]{a} < u < \sqrt[n]{a}|$:}\)

\(-\sqrt{8} < a+2 < \sqrt{8}\)

Therefore:

\(-\sqrt{8} -2 < a < \sqrt{8}-2\)

\(-2\sqrt{2}-2 < a < 2\sqrt{2}-2\)

So the possible values of "a" such that ax² + (2a + 2)x + a + 3 = 0 has two roots and the distance between them on the number line is greater than 1 are:

\(\large{\boxed{-2\sqrt{2}-2 < a < 2\sqrt{2}-2,\;\;a\neq0}\)

Rewrite as

\(\frac{4}{7} *\frac{3}{10} /\frac{1}{6}\)

PEMDAS says do multiplication first

When multiplying fractions, just multiply across.

12/70   / 1/6

When dividing fractions, KEEP CHANGE FLIP.

Keep one of the fractions, change the sign to multiplication, flip one of the fractions.

12/70  * 6/1

72/70

1 2/70

Option D

1  1/35

Answer: The correct answer is:

Probability of rolling a number less than 3: 2/6 or 1/3

Step-by-step explanation:

Explanation: Out of the six possible outcomes (numbers 1, 2, 3, 4, 5, 6), there are two outcomes that meet the condition of rolling a number less than 3, which are 1 and 2. Therefore, the probability of rolling a number less than 3 is 2 out of 6, which simplifies to 1/3.

Probability of not rolling a number less than 3: 4/6 or 2/3.

Explanation: To find the probability of not rolling a number less than 3, we consider the outcomes that are not favorable (i.e., rolling a 3, 4, 5, or 6). There are four such outcomes, so the probability of not rolling a number less than 3 is 4 out of 6, which simplifies to 2/3. :D

Answer:

13/25

Step-by-step explanation:

probability of an event = # times event has happened / total number of events

probability of someone liking potato chips or pretzels = # of people who like potato chips or pretzels / # total number of people

# of people who like potato chips or pretzels = # people who like potato chips + # people who like pretzels (this works because the two groups don't overlap)

(12+14)/50 = 26/50 = 13/25 = B

Here are the pairs matched with their products:

- (-5)(4.2) matches with -21

- (-7)(-3) matches with 21

- (2.5)(-9) matches with -22.5

Pairs (4) and (5) do not have corresponding products in the given options.

Answer:

26-ounce package

Step-by-step explanation:

Divide the cost for a 6-ounce and a 15-ounce package separately by the number of ounces listed above.  1 ounce for a 6-ounce package costs around $0.36 and 1 ounce for a 15-ounce package cost around $0.37.  If we put the 26-ounce package in place, then each ounce cost $0.35.  We want to buy the one that is the cheapest out of all of them and since the 26-ounce package cost more cheaper than the other packages, then you should buy the 26-ounce package since it is the best deal.

Answer:

$0.66 per cup

Step-by-step explanation:

There are 8 cups in 2 quarts, so 5.28/8 is $0.66 per cup.

Answer:

0.66

Step-by-step explanation:

8 cups are in 2 quarts so you going to count 8 cups untill you get 5.28 and then you see how many cents that it is so its 0.66

Answer:

the last guy said D 9

Step-by-step explanation:

there awnser got deleted so im making this one so you will know