Select the expression that represents the following statement: multiply 6 by 2, and then subtract 4.
1- 2 − 4 x 6
2- 6 x 2 − 4
3- 6 + 6 + 4 − 2
4- 6 x 4 − 2

Answer:

je sais pas miskine eu débrouille.toi demande à ton papa de t'aider ne pleure pas stp si pleure tu fera moins pipi au lit bisous

The error is in step 2 in step 2 Susu forgot to divide 8 by 4 for finding the solution of a quadratic equation.

The name Quadratic comes from "quad" meaning square, because the variable gets squared (like x2). It is also called an "Equation of Degree 2"

Susu is solving the quadratic equation \(4x^2-8x-13=0\) by completing the square

To apply to completing the square method we need to get x^2 alone

Susu added 13 on both sides. So step 1 is correct

When we factor out 4, we divide both terms by 4

\(4(\dfrac{4x^2}{4}-\dfrac{8x}{2})=13\)

\(4(x^2-2x)=13\)

Susu forgot to divide 8 by 4

So , error in step 2

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Answer:

Step-by-step explanation:

2

Answer:

15 minutes from the time he entered the bank

Step-by-step explanation:

Answer:

Step-by-step explanation:

This is a trick question,  about the red marks again.   those marks are important b/c they tell you that the lengths are the same, so that the angles MUST also be the same.  That is  ,  D and E are equal

so set up your equations with that info

180 = 84 +2p

now use your algebra skillz to solve

180-84 / 2 = p

96/2 = p

48 = p

see??

A

Step-by-step explanation:

Answer:

x = 55°

Step-by-step explanation:

x = 180° - 85° - 40° = 55°

The two factors are (x + 1) and (5x - 2) which can be multiplied together to make the trinomial 5x² + 8x – 4.

Any equation of the form \(\rm ax^2+bx+c=0\) where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

As we know, the formula for the roots of the quadratic equation is given by:

\(\rm x = \dfrac{-b \pm\sqrt{b^2-4ac}}{2a}\)

We have a quadratic equation:

= 5x² + 8x – 4

By using the factorization method:

= 5x² + 8x – 4

\(= \rm \left(5x^2-2x\right)+\left(10x-4\right)\)

\(\rm =x\left(5x-2\right)+2\left(5x-2\right)\)

\(\rm =\left(5x-2\right)\left(x+2\right)\)

Thus, the two factors are (x + 1) and (5x - 2) which can be multiplied together to make the trinomial 5x² + 8x – 4.

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Check the picture below.

Answer:

14.1

Step-by-step explanation:

You add all of your numbers up, and then you divide by how many numbers you have.

Find y intercept

Point(0,-7)

Find vertex

x coordinate

y coordinate

Vertex at (-2,-27)

Slope

Answer:

10

Step-by-step explanation:

The x-coordinate of the vertex of a quadratic equation in the form

\(f(x)=ax^2+bx+c\quad \textsf{is} \quad -\dfrac{b}{2a}\)

Given function:

\(f(x)=5x^2+20x-7\)

\(\implies a=5, \quad b=20, \quad c=-7\)

x-coordinate of the vertex

\(\implies -\dfrac{b}{2a}=-\dfrac{20}{2(5)}=-2\)

To find the y-coordinate of the vertex, substitute the found value of x into the function:

\(\begin{aligned}\implies f(-2) & =5(-2)^2+20(-2)-7\\& = 5(4)-40-7\\& = 20-47\\& = -27\end{aligned}\)

Therefore, the coordinates of the vertex are (-2, -27).

The y-intercept is when the curve crosses the y-axis, so when x = 0.

To find the y-coordinate of the y-intercept, substitute x = 0 into the function:

\(\begin{aligned}\implies f(0) & =5(0)^2+20(0)-7\\& = 0 + 0-7\\& = -7\end{aligned}\)

Therefore, the coordinates of the y-intercept are (0, -7).

To find the slope of the line passing through the vertex and the y-intercept, simply substitute the found points into the slope formula:

\(\implies \sf slope=\dfrac{change\:in\:y}{change\:in\:x}=\dfrac{-27-(-7)}{-2-0}=\dfrac{-20}{-2}=10\)

Therefore, the slope of the line passing through the vertex and the y-intercept of the given quadratic function is 10.

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Answer:

34

Step-by-step explanation:

Answer:

it is b because I did the math and got that

Answer:

3 or B

Step-by-step explanation:

The positive becomes a negeative turning your problem into 5 - 2 = 3

The area of a triangle can be visually represented as a rectangle, it is possible through a specific construction known as the "rectangularization" of a triangle.

To illustrate this, consider a right triangle (a triangle with one angle measuring 90 degrees).

Take the two legs of the right triangle as the base and height of a rectangle.

The length of the base will be equal to the length of one leg of the triangle, and the length of the height will be equal to the length of the other leg.

The area of the resulting rectangle will be equal to the area of the right triangle.

Triangle with base = 4 units, height = 3 units

Rectangle with length = 4 units, width = 3 units

Thus, this way, the area of this triangle be forming a rectangle.

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Answer:

I can't see it the picture is not clean or close enough but it's in the bottom left

SOLUTION:

Step 1:

In this question, we are given the following:

Step 2:

The details of the solution are as follows:

The sum of interior angles of a polygon is:

CONCLUSION:

The final answer is:

The y-intercept is (0, -20) and the x-intercept is (20, 0).

what is an algebraic expression?

An algebraic expression is a mathematical phrase consisting of variables, numbers, and mathematical operations. It can include variables (such as x, y, or z), constants (such as 2, 3, or 4), and operators (such as +, -, *, or /) that combine these elements.

For example, 2x + 3y - 4 is an algebraic expression that contains the variables x and y, the constants 2, 3, and 4, and the operators + and -. It does not contain an equal sign and does not represent an equation, but it can be simplified or evaluated for specific values of the variables. Algebraic expressions are commonly used in algebra and other branches of mathematics to represent mathematical relationships and solve problems.

The given equation is y = -32 + 12.

To find the y-intercept, we set x = 0 and solve for y:

y = -32 + 12

y = -20

So the y-intercept is (0, -20).To find the x-intercept, we set y = 0 and solve for x:

0 = -32 + 12

20 = x

So the x-intercept is (20, 0).

Therefore, the y-intercept is (0, -20) and the x-intercept is (20, 0).

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Answer:

3300cm²

Step-by-step explanation:

30cm+30cm=60cm 60cm is the lengh of the whole joint structure.We will put it in the equation as "a".

heigh stays the same(10cm) because the pieces are not stacked one on top of the other.They are joined on their sides.We will put it as "c".

Widht also stays the same.its 15 cm and we will put it as letter "b".

So

a=60cm

b=15cm

c=10cm

We need to calculate the surface area of the entire joint structure.

1.First thing to do is to calculate the top part which is:

a*b=15*60=900cm²

2.The bootom side is the same 900cm².

3.The front side is:

a*c=60*10=600cm²

4.The back side is the same as front so it is 600cm².

5.The left side is:

c*b=10*15=150cm²

6.The right side is the same as the left and it is 150cm²

Now we just add it up.

S(surface)=900*2+600*2+150*2=3300cm²

If you want the whole exercise in one equation:

S=2*(a*b)+2*(a*c)+2*(b*c)

Answer:

6250

Step-by-step explanation:

The selection depends on individual needs, preferences, and the intended use of the tiny house.

a) To find the amount of space inside each house, we need to calculate the volume for each design.

House on the left:

Volume = length x width x height = 2.5 m x 18 m x 2.8 m = 126 m³

Triangular house:

Volume of a triangular prism = (base area x height) / 2

Base area = (1/2) x base x height = (1/2) x 4 m x 10 m = 20 m²

Volume = (20 m² x 7 m) / 2 = 70 m³

b) When comparing the environmental impacts of each house, several factors need to be considered:

Positive impacts:

1. Material usage: Tiny houses use fewer materials, reducing resource consumption and waste generation.

2. Energy efficiency: Smaller living spaces require less energy for heating, cooling, and lighting, leading to lower energy consumption.

3. Land utilization: Tiny houses can be built on smaller plots of land, preserving green spaces and reducing urban sprawl.

Negative impacts:

1. Construction materials: Although tiny houses use less material overall, the environmental impact depends on the types of materials used. Sustainable and eco-friendly materials should be prioritized.

2. Water and waste management: Adequate provisions for water supply and waste disposal should be implemented to minimize environmental impacts.

3. Transportation: The transportation of tiny houses to their locations can contribute to carbon emissions if not done efficiently.

c) The choice of design for a tiny house depends on personal preferences and priorities. However, considering the provided information:

The house on the left offers a larger interior space of 126 m³, providing more room for living and storage. It may be suitable for individuals or couples who desire more space and functionality within their tiny house.

The triangular house has a smaller interior volume of 70 m³ but offers a unique design and aesthetic appeal. It may be preferred by individuals who prioritize a distinctive architectural style or who are looking for a minimalist and cozy living space.

Ultimately, the selection depends on individual needs, preferences, and the intended use of the tiny house. Factors such as lifestyle, desired amenities, and personal values regarding sustainability and resource conservation should be considered when making the final decision.

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Answer: false

Step-by-step explanation:

Answer:

try 3

Step-by-step explanation:

Answer:

Step-by-step explanation:

The domain is (-7)

Answer: The domain is {−7}

I also got the range if you need it

The range is {7,6,5,4}

Hope it helped :D

Please mark me brainliest

the number of different furniture sets the Robinson family can select is n * m * p.

To determine the number of different furniture sets the Robinson family can select, we need to calculate the total number of combinations for each item (bed, desk, and dresser) and then multiply them together.

Let's assume there are n choices for the bed, m choices for the desk, and p choices for the dresser.

Using the fundamental principle of counting, the total number of different furniture sets is obtained by multiplying the number of choices for each item:

Total number of furniture sets = number of choices for bed * number of choices for desk * number of choices for dresser

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Answer:

I believe the answer is $70

Step-by-step explanation:

hope I could help

The standard deviation of the sampling distribution of sample means, based on samples of the amounts of weight lost by 72 people on this diet, is approximately 0.695 pounds.

To calculate the standard deviation of the sampling distribution of sample means, we need to use the formula for the standard deviation of a sample mean. This formula states that the standard deviation of the sampling distribution (σ) is equal to the standard deviation of the population (σ) divided by the square root of the sample size (n).

Given that the population standard deviation (σ) is 5.9 pounds and the sample size (n) is 72, we can plug these values into the formula:

Standard Deviation of the Sampling Distribution (σ) = σ / √n

σ = 5.9 pounds

n = 72

Substituting these values, we get:

Standard Deviation of the Sampling Distribution (σ) = 5.9 / √72

To find the standard deviation of the sampling distribution, we need to evaluate the square root of 72. Using a calculator or mathematical software, we find that √72 is approximately 8.49.

Now, let's calculate the standard deviation of the sampling distribution:

Standard Deviation of the Sampling Distribution (σ) = 5.9 / 8.49 ≈ 0.695 pounds (rounded to two decimal places)

Therefore, the standard deviation of the sampling distribution of sample means, based on samples of the amounts of weight lost by 72 people on this diet, is approximately 0.695 pounds.

This value represents the average amount of variation or dispersion in the means of different samples taken from the population. It indicates how much the sample means are likely to deviate from the population mean.

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Answer:

y = -5x - 4

Step-by-step explanation:

-20x - 4y = 16

-4y = 20x + 16

4y = -20x - 16

y = -5x - 4

Answer:

x = - 6

Step-by-step explanation:

The statement that is true about this function is C. As x approaches positive infinity, h(t) approaches positive infinity

Given that we have:

Therefore, when x approaches to negative infinity,

\(\lim_{x \to \infty} h(x)\)

= 2^(-∞-5)

= 2^(-∞)

= 1/2^∞

=0

Also, as x approaches negative infinity, function h(x) approaches 0.

Then when x approaches to positive infinity,

\(\lim_{x \to \infty} h(x)\)

2^(∞-5)

= 2^(∞)

= ∞

Therefore, As x approaches positive Infinity, h(x) approaches positive infinity.

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The probability that the number of free throws he makes exceeds 80 is approximately 0.5000.

The complete question is as below:-

A college basketball player makes 80% of his free throws. Over the course of the season, he will attempt 100 free throws. Assuming free throw attempts are independent, the probability that the number of free throws he makes exceeds 80 is approximate:____________.

A) 0.2000

B) 0.2266

C) 0.5000

D) 0.7734

Probability is defined as the ratio of the number of favourable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.

Given that,

A college basketball player makes 80% of his free throws.

Over the course of the season, he will attempt 100 free throws.

Assuming free throw attempts are independent.

We have to determine,

The probability that the number of free throws he makes exceeds 80 is.

According to the question,

P(Make a Throw) = 80% = 0.80

number of free throws n = 100

Binomial distribution:

Mean: n x p = 0.80 x 100 = 80

Then, The standard deviation is determined by using the formula;

\(\sigma\) = \(\sqrt{np(1-P)\)

  = \(\sqrt{80\TIMES (1-0.80)\)

  = \(\sqrt16\)

  = 4

Therefore,

To calculate the probability that the number of free throws he makes exceeds 80 we would have to make the following calculation:

P ( x> 80) = 1 - P ( x < 80)

To calculate this value via a normal distribution approximation:

P ( \(Z < \dfrac{80-80}{4})\) = 1-P(Z < 0 ) = 1 - 0.50 = 0.500

Hence, The probability that the number of free throws he makes exceeds 80 is approximately 0.5000.

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Answer:

That Ratios aren't equal.

Step-by-step explanation:

Given: DE is || to BC.

So in order to make this false then we have to say that the sides aren't proprtional, making it not possible to get the ratios equal.

(See the Triangle proprtionality theorem or the triangle midsegment theorem)      

Answer:

4:10 ≠ 6:14

Step-by-step explanation:

bc i said so

Answer:

Step-by-step explanation:

In order to find the vertical asymptotes make the denominator equal to zero and solve:

There is one vertical asymptote since the denominator is linear expression

We need the value of x for which the function is undefined

To get ,make the denominator 0 and solve for x,we get vertical asymptotes by this

A vertical asymptote at x=-9