Plz help me i need it

Answer:

y = 2

Step-by-step explanation:

(1) x  + 2y = 9

(2) x  -   y = 3

Subtract (2) from (1)

3y = 6

 y = 2

The y-coordinate is y = 2.

The graphs of the two equations intersect at (5, 2).

Answer:

6

Step-by-step explanation:

Minus both from each other;

x=2y=9

x-y=3

x cancels, 2y-y= y; 9-3=6

Therefore; y=6

He grates 6/8 pounds of cheese in all.

For this problem, you just have to add the numerators and keep the denominators.

4/8 + 2/8 = 6/8.

Remember, if the denominator is the same, just add the numerator.

When you add fractions remember only add the numerator. There has to be a common denominator. Like 8.

4/8 + 2/8

4+2=6

So the answer is 6/8

Answer:

32

Step-by-step explanation:

Thankyouuuuuuuuuuuuuuuuuu

Answer: 1 and 3/5

Step-by-step explanation: The common denominator is 10. So, in order for everything to have a denominator of 10, we need to multiply a few things.

4 x 2 = 8

5 x 2 = 10

1 x 5 = 5

2 x 5 = 10

With that out of the way, we can finally move on to figure out the answer.

8/10 + 3/10 + 5/10 = 16/10. The question asks to write as a mixed number, if necessary. And it is. So:

10 goes into 16 once, with 6 left over, so 1 and 6/10. the fraction can be reduced, so we do that. Because 2 goes into 6 (3 times), and 2 goes into 10 (5 times), that leaves us with a final answer of 1 and 3/5.

Final answer:

To add 4/5, 3/10, and 1/2, first find a common denominator, which is 10. Convert the fractions to 8/10, 3/10, and 5/10, add them to get 16/10, which simplifies to 1 6/10, and then further simplify to the mixed number 1 3/5.

Explanation:

To add the fractions 4/5, 3/10, and 1/2, we need a common denominator. The least common multiple of the denominators 5, 10, and 2 is 10. Thus, we convert each fraction to an equivalent fraction with a denominator of 10. The converted fractions are 8/10, 3/10, and 5/10.

Next, we add the numerators: 8 + 3 + 5 = 16. The sum of the fractions is 16/10, which simplifies to 1 6/10 by dividing 16 by 10. Finally, we can simplify the fraction 6/10 to 3/5 because both the numerator and the denominator can be divided by 2. Therefore, our final answer is 1 3/5.

Number of calories in 8 ounces of orange juice = 100

Number of calories in 1 ounce of juice = [tex]\frac{100}{8}[/tex]

Number of calories in 4 ounces of juice = [tex]\frac{100}{8}*4=50[/tex] calories

Number of calories in 8 ounces of pineapple juice = 140

Number of calories in 1 ounce of juice = [tex]\frac{140}{8}[/tex]

Number of calories in 4 ounces of pineapple juice =

[tex]\frac{140}{8}*4=70[/tex] calories

Now the mixture has 50+70 = 120 calories in 8 ounce.

So, 1 ounce of mixture has = [tex]\frac{120}{8}= 15[/tex] calories.

To find the number of calories in Tia's juice mixture, we set up an equation based on the given information. Solving the equation, we find that there are 4 calories in each fluid ounce of Tia's juice mixture.

To find the number of calories in Tia's juice mixture, we can set up an equation based on the information provided. Let's say x represents the number of calories in each fluid ounce of orange juice, and y represents the number of calories in each fluid ounce of pineapple juice. Since Tia mixed 4 fluid ounces of each juice, the total number of calories in the mixture would be 4x + 4y. We know that there are 100 calories in 8 fluid ounces of orange juice and 140 calories in 8 fluid ounces of pineapple juice. We can set up the equation:

100 calories = (8/4)x

140 calories = (8/4)y

Simplifying the equations, we have:

25x = 100

35y = 140

Solving for x and y, we find:

x = 4

y = 4

Therefore, there are 4 calories in each fluid ounce of Tia's juice mixture.

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Answer:

12

Step-by-step explanation:

Given trinomial is [tex]x^2-bx+36[/tex].

Now we need to find the value of b that will make the trinomial [tex]x^2-bx+36[/tex] a perfect square.

[tex]x^2-bx+36[/tex]

[tex]=x^2-bx+36[/tex]

[tex]=x^2-bx+6^2[/tex]

compar with  [tex]=a^2-2ab+b^2=(a-b)^2[/tex]. we get:

a=x and b=6

then middle term -2ab=-2(x)(6)=-12x

compare -12x with -bx, we get b=12

Hence choice C. 12 is correct.

Answer:

The correct answer is option C.  12

Step-by-step explanation:

It is given a quadratic expression

x² - bx +  36

To find the value of b

From the above expression we can see that 36 is a perfect square,

6² = 36

We can write this expression as ( x - 6)² if b = 12

(x - 6)² = x² - 12x + 36

Therefore the correct answer is option C.   b = 12

Answer:

45/28

Step-by-step explanation:

Convert them to mixed fractions

(2 * 4 + 1) / 4 ÷ (1 * 5 + 2) / 5

8 + 1 / 4 ÷ 5 + 2 / 5

9/4 ÷ 7/5

Flip the second fraction and flip the sign - to multiply.

9/4 × 5/7

9 × 5 = 45

4 × 7 = 28

45/28

This could be left as a fraction or converted to a number:

1.60714285714

Answer:

The Answer is 1 17/28

Step-by-step explanation:

1) turn the mixed fraction into a regular fraction

2 1/4 divided by 1 2/5 = 9/4 divided by 7/5

2) Then Multiply

9/4 X 7/5= 45/28 (Straight across)

3) Simplify 45/28

Give you 1 17/28

Hopes this helps!

The surface area of the cylinder is 326.56 square inches.

For the surface area (SA) of a cylinder, you can use the formula:

SA = 2π[tex]r^2[/tex]+ 2πrh

where:

Given that the height (h) is 9 inches and the base radius (r) is 4 inches, you can substitute these values into the formula:

SA = 2 × 3.14 × [tex](4)^2[/tex]+ 2 × 3.14 × 4 × 9

SA = 2 × 3.14 × 16 + 2 × 3.14 × 36

SA = 100.48 + 226.08

SA = 326.56

Therefore, the surface area of the cylinder is

326.56 square inches.

Answer:

Step-by-step explanation:

The measure of a central angle is equal to the measure of its intercepted arc. A chord is a segment that has is endpoints on a circle. ... A line is called a straight angle and it forms a 180 degree angle. A central angle is an angle with its vertex at the center of a circle and its sides are radii of the same circle.

Final answer:

A real-world population growth graph may differ from a game's graph in terms of actual population numbers, reflecting real-life constraints versus game assumptions, although the overall S-shape indicating logistic growth may be similar. This shows the importance of graph type and display in interpreting growth rates and relationships in data.

Explanation:

When comparing a graph of a scientist’s data on population growth to a graph representing population growth in a game, there may be notable differences. The x-y values on the graphs indicating the time frames for the growth curves would generally be the same since time is a consistent measure. However, while the overall S-shape of a logistic growth model might be similar, representing the slowdown in growth as the population reaches carrying capacity, the actual population numbers corresponding to the starting populations could differ based on real-world limitations versus game conditions.

Further, displaying data graphically helps in interpreting growth rates and relationships between data points. For instance, in a scenario where an individual receives a $2 raise each year, the growth rate decreases over time unless the raise amount also increases. In terms of graphing, economists and other professionals use various types of graphs like pie charts or bar graphs to visualize data, such as the distribution of hours played amongst students, or the comparison of populations among countries. The choice of the graph type and how it's displayed can impact the interpretation of the data.

Moreover, when comparing real data with that from a game, the assumptions and simplifications made in a game's model might not perfectly reflect real-life complexities, leading to different population growth dynamics and consequently different shapes of the graph beyond just the starting population numbers.

Answer:

60% of 243 = 145.80

Hope this helps,

Davinia.

60% × 243 =

(60 ÷ 100) × 243 =

(60 × 243) ÷ 100 =

14,580 ÷ 100 =

145.8

how to make sure it is right we do the reverse of what we did

145.8 ÷ 243 =

0.6 =

0.6 × 100/100 =

0.6 × 100% =

(0.6 × 100)% =

60%

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1. Answer:  [tex]\bold{\dfrac{188}{3}}[/tex]

Step-by-step explanation:

[tex]\dfrac{y_4-y_1}{x_4-x_1}=\dfrac{128-316}{4-1}=\large \boxed{-\dfrac{188}{3}}\\\\\\\text{The negative sign represents "decrease".}[/tex]

2. The parent graph is y = | x |

a)  Shifted down 3 units

b) vertex = (0, -3)

c) Equation: y = | x | - 3

3. The parent graph is y = x²

a) Shifted right 1 and down 1 unit

b) vertex = (1, -1)

c) Equation: y = (x - 1)² - 1

Please list the answer choices because anything that is greater than 0.5 is correct. If the fraction’s denominator is larger than 2 it is incorrect

Answer:

Step-by-step explanation:

Mean: 8 + 7 + 8.5 + 6.5 + 5 + 11 + 15 + 8 + 8 + 7 + 7.5 + 6.5 + 8 + 14 + 12 = 132 / 15 = 8.8

Median: You have to arrange the numbers first in ascending order.

5, 6.5, 6.5, 7, 7, 7.5, 8, 8, 8, 8, 8.5, 11, 12, 14, 15

The median is 8 because that is the middle value/number.

Mean Absolute Deviation:

Get the average/mean (1), find the deviation (2) to get MAD (3).

Step #1 Mean = 8.8

Step #2 To get the deviation, you subtract the mean from the values given.

8 - 8.8 = -0.8

7 - 8.8 = -1.8

8.5 - 8.8 = -0.3

6.5 - 8.8 = -2.3

5 - 8.8 = -3.8

11 - 8.8 = 2.2

15 - 8.8 = 6.2

8 - 8.8 = -0.8

8 - 8.8 = -0.8

7 - 8.8 = -1.8

7.5 - 8.8 = -1.3

6.5 - 8.8 = -2.3

8 - 8.8 = -0.8

14 - 8.8 = 5.2

12 - 8.8 = 3.2

Step #3 Get the summation from step #2, and get its average. Disregard the negative signs.

0.8 + 1.8 + 0.3 + 2.3 + 3.8 + 2.2 + 6.2 + 0.8 + 0.8 + 1.8 + 1.3 + 2.3 + 0.8 + 5.2 + 3.2 = 33.6 / 15 = 2.24 is the Mean Asolute Deviation

Median Absolute Deviation:

Get the median (1) and subtract it from the values (2). Get the median of the new values (3)

Step #1 Median = 8

Step #2

8 - 8 = 0

7 - 8 = -1

8.5 - 8 = 0.5

6.5 - 8 = -1.5

5 - 8 = -3

11 - 8 = 3

15 - 8 = 7

8 - 8 = 0

8 - 8 = 0

7 - 8 = -1

7.5 - 8 = -0.5

6.5 - 8 = -1.5

8 - 8 = 0

14 - 8 = 6

12 - 8 = 4

Step #3 Arrange the numbers in ascending order.

-3, -1.5, -1.5, -1, -1, -0.5, 0, 0, 0, 0, 0.5, 3, 4, 6, 7

The Median Absolute Deviation is 0 since it is the middle value/number.

It is important that you calculate this by yourself in case I did some careless mistakes.

Answer:

The x intercept will be (9,0) and the y intercept will be (0,-3.6)

Step-by-step explanation:

If you graph both of these points on the graph you can see the x intercept clearly but you have to solve for the y intercept by plugging it into y=mx+b equation.

Answer:

x=0       x = -6

Step-by-step explanation:

7x^2−5x=9x^2+7x

subtract 7x^2 from each side

7x^2-7x^2−5x=9x^2-7x^2+7x

-5x = 2x^2 +7x

Add 5x from each side

-5x+5x = 2x^2 +7x+5x

0 = 2x^2 +12x

Factor out a 2x

0 = 2x(x+6)

Using the zero product property

2x =0  x+6 = 0

x=0       x = -6

Keira spends approximately $119.12 on food.

To find the fraction of Keira's total spending on petrol, we need to determine the total amount she spent on all items and then calculate the fraction spent on petrol.

Total amount spent on all items (T): We'll use algebra to find the total amount Keira spent.

Fraction spent on other items and clothes: Given Keira spends 1/9 of the money on other items and 1/5 of the money on clothes, we'll find the combined fraction spent on other items and clothes.

Fraction spent on petrol: Subtract the fraction spent on other items and clothes from 1 to find the fraction spent on petrol.

Amount spent on food: Subtract the amounts spent on petrol, other items, and clothes from the total amount to find the amount spent on food.

Total amount spent on all items (T): Let T represent the total amount spent.

Fraction spent on other items and clothes:

[tex]\[ \frac{1}{9} + \frac{1}{5} = \frac{5}{45} + \frac{9}{45} = \frac{14}{45} \][/tex]

Fraction spent on petrol:

[tex]\[ 1 - \frac{14}{45} = \frac{31}{45} \][/tex]

Amount spent on food:

  [tex]\[ \text{Amount spent on food} = T - (45 + \frac{1}{9} \times T + \frac{1}{5} \times T) \] \[ \text{Amount spent on food} = T - (45 + \frac{14}{45} \times T) \] \[ \text{Amount spent on food} = \frac{31}{45} \times T \][/tex]

Now, to find the value of T, we solve the equation:

[tex]\[ \frac{31}{45} \times T = 45 + \frac{14}{45} \times T \]\[ \frac{31}{45} \times T - \frac{14}{45} \times T = 45 \]\[ \frac{17}{45} \times T = 45 \]\[ T = \frac{45 \times 45}{17} \]\[ T \approx 119.12 \][/tex]

So, Keira spends approximately $119.12 on food.

The complete question is:

Keira goes shopping at a supermarket. the pie chart below shows information about the money she spends on petrol, clothes, food and other items. what fraction does she spend on petrol? if keira spends $45 on petrol, 1 9 of the money on other items and 1 5 of the money on clothes. how much money does she spend on food? $

Answer: b is the answer

Step-by-step explanation:

2400-1200=1200

2400-1200=1200

hopes this help

Answer:

(1;-2)

Step-by-step explanation:

x=-2y-3

2(2y+3)=-6y-9-5

10y=-20

y=-2

x=4-3=1

(0,4) because its the coordinates where the lines intersect

Answer:

C) (-3,3)

Step-by-step explanation:

The solution set is the region of intersection of the blue shaded region and the red shaded region.

We plot the given points, and the only one that falls within the solution set is  (-3,3).

A=bh for a rectangle. 16x3= 48in(width/base) 16x2= 32in (height) so A=48x32. A= 1,536

Answer:

They all have 3 cups together.

Step-by-step explanation:

I added 1/2 plus 1 3/4 plus 1 4/6 on a calculator and got 3.91666666667

Basically 3.

Answer:

A. 8kg

Step-by-step explanation:

You don't really need any solution but if

1000 paperclips = 1 kg, then

8000 paperclips = 8kg

Final answer:

To determine the mass of 8,000 paperclips in kilograms, divide 8,000 by 1,000, since 1,000 paperclips weigh 1 kilogram. The result is 8 kilograms, making option A the correct answer.

Explanation:

The question concerns the mass of paperclips in grams and kilograms, which are units of mass in the metric system. To find out how many kilograms 8,000 paperclips would weigh, we need to use the given conversion that 1,000 paperclips have a mass of 1 kilogram. Here's the step-by-step calculation:

Since 1,000 paperclips weigh 1 kilogram, we can find out how many groups of 1,000 paperclips there are in 8,000 paperclips by dividing 8,000 by 1,000.

8,000 paperclips ÷ 1,000 paperclips/kg = 8 kg

Therefore, 8,000 paperclips have a mass of 8 kilograms.

The correct answer to the question is A. 8 kg.

Her biweekly paycheck is 38358.26

As we know that there are 52.14 weeks in a year

So weekly paycheck will be 1000000 / 52.14 = 19179.13

Since she gets biweekly check so we multiply it with 2

19179.13 * 2 = 38358.26

Her biweekly paycheck is 38358.26

Answer:

do practice review packets and grade yourself

Step-by-step explanation:

there is a website called escambia and google escambia algebra 1 eoc review and there is every thing you need to pass.

please mark me brainliest

Final answer:

To perform well in the Algebra 1 EOC exam, students should study the topics specified by the instructor using provided tools like study guides and flashcards, engage in self-evaluation and active learning, and maintain a good study routine.

Explanation:

To excel in your Algebra 1 End-of-Course (EOC) exam, it is crucial to have a structured and effective study plan. Begin with a clear understanding of the topics you need to cover, such as algebraic expressions, equations, exponents, and functions.

Utilize tools provided by your instructor, like reviews, study guides, flashcards, and PowerPoints. These are specifically tailored to what your instructor deems important and may include topics like number patterns, finance, growth, trigonometry, analytical geometry, and statistics.

Regular self-evaluation helps identify areas that need more attention. Review quizzes and textbook chapter questions, as they are likely indicative of the questions you'll face during the exam. Additionally, engage in active learning by organizing information into categories and patterns, which helps in understanding and retaining complex concepts.

Answer:

160,000

Step-by-step explanation:

400 * 200 is 80,000 just walking around once, so then multiply it by two.

80,000 * 2 is 160,000

Answer:

h(x) = (x+2) ^2 -2x -3

Step-by-step explanation:

If we have to shift 2 units left the we have to replace x by x+2 i.e

h(x) = (x+2)^2-2(x+2)+1

      = (x+2)^2 -2x-4 +1

       = (x+2)^2 -2x -3

12,347/10

=1,234.7

So 1/10th of the income would be

$1,234.7

One tenth of an income of $12,347, calculated by dividing by 10, gives the result $1,234.7. Dividing by 10 is a common mathematical method for finding a tenth of a value.

To calculate one tenth of an income of 12,347 you need to divide 12,347 by 10. This will give you the value of 1,234.7. This method is often used in mathematics to calculate percentages, fractions, or a portion of a given value.

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y - 2x = 1

6x - y = 7

Adding equations,

4x = 8

x = 2

y = 2x + 1 = 5

Answer: (2,5)

Check:

5-2(2)=1, good

6(2)-5=7, good

To solve the system of equations y - 2x = 1 and 6x - y = 7, we use the elimination method. By aligning the equations and setting the right sides equal, we can solve for 'x' and then 'y', resulting in the solution x = 2 and y = 5.

Solving the System of Equations

To solve the system of equations:

y - 2x = 1

6x - y = 7

We can use the method of substitution or elimination. In this case, the elimination method seems efficient. Let's align the equations:

y = 2x + 1

6x - y = 7

We can eliminate y by adding the two equations. First, rearrange the second equation:

y = 2x + 1

y = 6x - 7

By setting the right sides equal to each other, we get 2x + 1 = 6x - 7. Solving for x gives us x = 2 and substituting x back into either equation yields y = 5.

Therefore, the solution to the system of equations is x = 2 and y = 5.

x+14=23/-14

x=9

9+14=23

9 because 14+9 equals 23