Solve the system is of linear equations by substitution.What is the solution to x=2y+7 and 3x+2y=3?

Answers

Answer 1

Answer:

(5/2, -9/4)

Step-by-step explanation:


Related Questions

What happens to the value of the expression w-w as w increases?

Answers

Answer:

The value is always 0.

plz mark me as brainliest :)

hope this helped Peppa Pig

It is always zero
...

what is 130/15 simplifed​

Answers

Answer:

26/3

Step-by-step explanation:

answer:

5 or 26/3

step-by-step explanation:

either one is okay mine is just simplified all the way :)

-3 p + 1/8 equals -1/4 what is value of p

Answers

Answer: p=1/8

Step-by-step explanation:

-3p + 1/8= -1/4

-3p= -1/4-1/8

-3p=-3/8

P=(-3/8)/-3

P=1/8

Step-by-step explanation:

[tex] - 3p + \frac{1}{8} = - \frac{1}{4} \\ \\ \therefore \: \frac{1}{8} + \frac{1}{4} = 3p \\ \\ \therefore \: \frac{1}{8} + \frac{1 \times 2}{4 \times 2} = 3p \\ \\ \therefore \: \frac{1}{8} + \frac{2}{8} = 3p \\ \\\therefore \: 3p = \frac{1 + 2}{8} \\ \\ \therefore \: 3p = \frac{3}{8} \\ \\ \therefore \: p = \frac{3}{8 \times 3} \\ \\ \huge \purple{ \boxed{\therefore \: p = \frac{1}{8 }}} \\ \\ [/tex]

H(x) = 2x-6
4x^2 +8
H(-1)=?

Answers

Answer:

H(-1) = 2(-1) - 6

4(-1)^2+8

= - 2-6

4(1)+8

= -8

12

=-2

3

Final answer:

The student needs to evaluate H(-1) for a given function. Based on the information, h(x) = 4x + x² seems like the function intended, thus h(-1) equals -3.

Explanation:

The student is asking to evaluate the function H(x) at x = -1. From the information given, it seems there is a typo in the function H(x), but we can still proceed with the information from the examples provided.

The correct expression for H(x) based on the examples might be h(x) = 4x + x². When evaluating h(-1), the calculation would be h(-1) = 4(-1) + (-1)².

Using order of operations:

4(-1) = -4(-1)² = 1

Now, sum both results: -4 + 1 = -3.

Therefore, the value of H(-1) or h(-1) is -3.

A sphere has a diameter of 14 units. What is the volume of the sphere in cubic units? If a cylinder has the same radius as the sphere and a height
of 14 units, what is the volume of the cylinder? Use 3.14 for pie

A). The volume of the sphere is about 1,077.02 cubic units, and the volume of the cylinder is about 718.01 cubic units.

B). The volume of the sphere is about 1,436.03 cubic units, and the volume of the cylinder is about 2.154.04 cubic units.

C). The volume of the sphere is about 1,436.03 cubic units, and the volume of the cylinder is about 957.35 cubic units.

D). The volume of the sphere is about 1,077.02 cubic units, and the volume of the cylinder is about 1,615.53 cubic units.

Answers

Answer:

B

Step-by-step explanation:

r = 14/2 = 7units

[tex]Volume of sphere=\frac{4}{3}*\pi*r^{3}\\\\=\frac{4}{3}*3.14*7*7*7\\\\=1436.03cubic units\\\\Volume of cylinder=\pi*r^{2}*h\\\\=3.14*7*7*14\\\\=2154.04 cubic units[/tex]

Answer:

B

Step-by-step explanation:

r = 14/2 = 7units

Problem Solving
Real
World
10. There are 100 pennies in a dollar. What
fraction of a dollar is 61 pennies? Write it as a
fraction, as a decimal, and in word form.
How do you put 61/100 in word form

Answers

Sixty-one one hundredths

Final answer:

The fraction of a dollar that 61 pennies represent is 61/100, which in decimal form is 0.61, and in word form is sixty-one hundredths.

Explanation:

If we want to express 61 pennies as a fraction of a dollar, we simply divide the number of pennies by the total number of pennies in a dollar. Since there are 100 pennies in a dollar, we get the fraction 61/100.

In decimal form, this fraction is equivalent to 0.61 because when you divide the numerator 61 by the denominator 100, the result is 0.61. Converting this fraction into words, we say sixty-one hundredths.

Using money examples, like fractions of a dollar, helps make the math more relatable as we often work with money in everyday life.

work out the equation of the line which has a gradient of -2 and passes through the point (1,7)

Answers

Answer: [tex]y = -2x + 9[/tex]

Step-by-step explanation:

The formula for finding equation of line given slope and one point is given as :

[tex]y - y_{1} = m ( x - x_{1} )[/tex]

[tex]x_{1}[/tex] = 1

[tex]y_{1}[/tex] = 7

[tex]m = -2[/tex]

substituting the values into the equation , we have :

[tex]y - 7 = -2 ( x - 1 )[/tex]

[tex]y - 7 = -2x +2[/tex]

[tex]y = -2x + 2 + 7[/tex]

[tex]y = -2x + 9[/tex]

Each year the local country club sponsors a tennis tournament. Play starts with 128 participants. During each round, half of the players are eliminated. How many players remain after 5 rounds?

Answers

Answer:4

Step-by-step explanation:

128, 64, 32, 16, 8, 4

The number of players remaining after 5 rounds is equal to 4 players.

What is an exponential function?

An exponential function refers to a mathematical function whose numerical values are generated by a constant that is raised to the power of an argument.

Mathematically, the number of players remaining after 5 rounds is given by:

f(x) = neˣ

f(x) = 128 × (1/2)⁵

f(x) = 128 × 0.03125

f(x) = 4 players.

Read more on an exponential function here: https://brainly.com/question/12940982

What is the equation of the line that passes through the point (6,-6) and is parallel to the x axis

Answers

Answer:

[tex]y=-6[/tex]

Step-by-step explanation:

we know that

A line parallel to the x-axis is a horizontal line

The equation of a horizontal line is equal to the y-coordinate of the point that passes through it

In this problem the line passes through the point (6,-6)

so

The y-coordinate is -6

therefore

The equation of the line is

[tex]y=-6[/tex]

what value of x makes the equation 3(x - 6) - 8x = -2 + 5(2x + 1) true ?

Answers

Answer:

x = -3

Step-by-step explanation:

3(x - 6)= -2 + 5(2x + 1)

= 3x - 18 = -2 + 10x + 5

= -18 = -2 + 7x + 5

= -18 = 7x + 3

= -21 = 7x

= -3 = x

= x = -3

How much pure acid is in 440 milliliters of a 19% solution

Answers

Answer:

83.6 mL

Step-by-step explanation:

Given 440 mL of 19% acid solution. This means the whole volume of this acid solution is 100%. Let x mL be the volume of pure acid in this solution.

Then

[tex]440\ mL - 100\%\\ \\x\ mL - 19\%[/tex]

Write a proportion:

[tex]\dfrac{440}{x}=\dfrac{100}{19}[/tex]

Cross multiply:

[tex]100\cdot x=440\cdot 19\\ \\x=\dfrac{440\cdot 19}{100}\\ \\x=\dfrac{8,360}{100}\\ \\x=83.60\ mL[/tex]

Final answer:

In 440 milliliters of a 19% solution, there are 83.6 milliliters of pure acid, calculated by multiplying the percentage (converted to a decimal) by the total volume of the solution.

Explanation:

To find out how much pure acid is in 440 milliliters of a 19% solution, you need to use the concept of percentage concentration in chemistry. The percentage concentration tells us how much of a substance is present in a solution compared to the total amount of the solution.

In this case, we have a 19% acid solution. This means that 19% of the solution's total volume is pure acid. To calculate the volume of pure acid, you multiply the total volume of the solution by the percentage (expressed as a decimal).

Calculation:

Convert the percentage to a decimal: 19% = 0.19

Multiply this decimal by the total volume of the solution: 0.19 × 440 mL

This gives us the volume of pure acid: 0.19 × 440 mL = 83.6 mL

So, there are 83.6 milliliters of pure acid in 440 milliliters of a 19% acid solution.

Calculate the surface area of the following triangular prism:

156 cm^2
240 cm^2
0336 cm^2
288 cm^2

Answers

Answer:

S = 2(1/2)(4)(6) + 4(12) + 2(7)(12)

= 24 + 48 + 168

= 240 cm²

Subtract and simplify. Show work please!
(-2y^2-11y-7)-(-9y^2-5y+10)

Multiply and simplify. Show work please!
(7x-6)(3x^2-4x+5)

Answers

I dont really know but nice a question from last year

The group wants to leave a 15% tip and the bill 24.20 how much do they leave

Answers

Answer:

27.83

Step-by-step explanation:.15(24.20)=3.63

3.63+24.20+27.83

Final answer:

To calculate a 15% tip on a $24.20 bill, convert 15% to a decimal (0.15), and multiply this by the total bill. The tip should be $3.63.

Explanation:

The concept behind leaving a tip is to provide payment that is a certain percentage of the total bill. In your query, you want to leave a 15% tip on a bill of $24.20. To figure out how much the tip would be, you would multiply the total bill by the tip percentage.

First, you need to convert the tip percentage into a decimal form. To do that, you divide the percentage by 100. So 15 divided by 100 is 0.15.

Next, you multiply the total bill by this decimal. In this case, 24.2 (the total bill) multiplied by 0.15 equals 3.63. Thus, the tip they should leave is $3.63.

Learn more about Percentages here:

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What is 160% of what is 32

Answers

Answer:

51.2

Step-by-step explanation:

Answer:

51.2

Step-by-step explanation:

160% is the same as saying 1.6 as a decimal. So 160% of 32 would be 32 × 1.6 = 51.2

Round 0.768 to the nearest tenths

Answers

0.768 is closest to 0.77, which is closest to 0.8, so there's your answer.

Round up when the number is higher than 5, or round down when lower than 5

I’m almost positive it’s 0.8, hope this helps

simplify: -2(-5+3x)

Answers

Answer: 10-6x

Step-by-step explanation:

Answer:

Step-by-step explanation:

10-6x

Find the coefficient of the t4
term in the expansion of
(4t– 3)^5

Answers

Answer:

-4320t^2

Step-by-step explanation:

Use Pascal's triangle to figure out the variables.

In the 5th expansion, we see that the 4th term is:

10x^2 y^3

Plug in the values,

10*(4)^2 * (-3)^3 = -4230.

However, since the -3 in the original expression does not have a variable next to it, we do not include it in our answer.

Therefore, the 4th term is -4230t^2

Answer:-3840t^4

Step-by-step explanation:cause it is XD good luck yall

Mark is planning to paint grass in his backyard. His yard is 21 ft. long and 12 ft. wide. How much grass does he need?

Answers

Answer:

Since garden is rectangular in shape,

The area of grass needed to be painted =

Length x breadth.

Length = 21 ft

Breadth= 12ft

Area= (21 x 12)ft square

234ft square

Step-by-step explanation:

How to divide 2/4 by 2

Answers

Answer:

1/4

Step-by-step explanation:

multiply the whole number to the denominator

so 4(2) = 8

u now have 2/8

simplify the fraction and ur done :)

in decimal form  .25

Find the value of two numbers if their sum is 11 and their difference is 3

Answers

Answer:

4+7=11

7-4=3

So the numbers must be 4, and 7.

It must be 4 and 7 because 4+ 7=11 and 7-4=3 so it has to be that

In the figure below, F is between E and G, and G is between F and H. IF EG-10, FG-2, and FH-8, find EH

Answers

Using the Segment Addition Postulate, we determined that the length of segment EH is 20 units, given the lengths of segments EG, FG, and FH in the figure.

In the given figure, we have three points E, F, G, and H, with F being between E and G, and G being between F and H. We are given the lengths of line segments EG, FG, and FH, and we need to find the length of segment EH.

To find EH, we can use the Segment Addition Postulate, which states that for three collinear points, if one point is between the other two, then the sum of the lengths of the two smaller segments is equal to the length of the larger segment.

In this case, we have:

EG + GF = EF

Given that EG is 10 and GF is 2:

10 + 2 = EF

12 = EF

Now, we know the length of segment EF is 12. Next, we can apply the same principle to segments EF and FH:

EF + FH = EH

Substituting the values:

12 + 8 = EH

20 = EH

So, the length of segment EH is 20 units.

For more such information on: Segment Addition Postulate

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To find probability, divide the number of __________ by the number of trials

Answers

Answer:

To find probability, divide the number of times an event happens by the number of trials.

Answer:

outcome

Step-by-step explanation:

i took the test and i got this anser to the question

Timothy had 24 meters of ribbon. He cuts it into 2 pieces. The shorter piece is 6 meters long. What is the length of the longer piece?

Answers

Answer:

length of longer piece = 18 m

Step-by-step explanation:

Timothy had 24 meters of ribbon

shorter piece is 6 meters

longer piece = actual piece - shorter piece

                      = 24 - 6

                      = 18 m

Final answer:

The longer piece of ribbon is 18 meters long, which is obtained by subtracting the length of the shorter piece from the total length of the ribbon.

Explanation:

Timothy started with a 24-meter long ribbon and cut it into two pieces, with the shorter piece being 6 meters in length. To find the length of the longer piece, we subtract the length of the shorter piece from the total length of the ribbon.

Length of the longer piece = Total length of the ribbon - Length of the shorter piece

Length of the longer piece = 24 meters - 6 meters = 18 meters.

Therefore, the longer piece of ribbon is 18 meters long.

PLEASE HELP ME . - Simplify the expression (x5)1/9. a - 5x^9 . b - 9x^5 . c - x^ 5/9 . d - x^9/5

Answers

Answer:

Option C) [tex]x^{\frac{5}{9}}[/tex] is correct

Therefore [tex](x^5)^{\frac{1}{9}}=x^{\frac{5}{9}}[/tex]

Step-by-step explanation:

Given expression is

To simplify the given expression :

[tex](x^5)^{\frac{1}{9}}[/tex]

[tex]=(x)^{5\times \frac{1}{9}}[/tex] ( using the property [tex](a^m)^n=a^{mn}[/tex] )

[tex]=x^{\frac{5}{9}}[/tex]

Therefore [tex](x^5)^{\frac{1}{9}}=x^{\frac{5}{9}}[/tex]

Therefore option C) [tex]x^{\frac{5}{9}}[/tex] is correct

Therefore the simplified expression is [tex]x^{\frac{5}{9}}[/tex]

MARKING BRAINLIST 3 ¼ - 2 ¾

Answers

Answer:

1/2

Step-by-step explanation:

make the mixed numbers improper fractions: 13/4-11/4

13/4-11/4 = 2/4

2/4 = 1/2

Answer:

1/2

Step-by-step explanation:

help please
Triangle GHI is rotated 90Degrees clockwise and then reflected over the y-axis. Which congruency statement is true? On a coordinate plane, triangle G H I is rotated 90 degrees clockwise and then is reflected over the y-axis. Angle G is congruent to angle H is congruent to angle I Angle G double-prime is congruent to angle H double-prime is congruent to angle I double-prime Triangle G H I is congruent to triangle G double-prime H double-prime I double-prime Triangle G H I is congruent to triangle I H G

Answers

on observing the conversions we get that

triangle GHI is congruent to triangle G''H''I''

Hope this helps.

Answer:

c?

Step-by-step explanation:

help help help help help​

Answers

Answer:

?

Step-by-step explanation:

If you spend 2/5 of your $30 gift card, how much money will be left on it?

Answers

Answer:

18

Step-by-step explanation:

30 divided by 5 x what is left over from the whole.

Answer:

3/5 left or 10$

Three friends ordered 2 pizzas.Each pizza was cut into 8 slices. If each person ate the same amount of slices, how many slices did each person eat?

Answers

The answer is 5 1/3 not just 5

Final answer:

When 2 pizzas, each cut into 8 slices, are equally shared among 3 friends, each person would eat 5 and 1/3 slices of pizza.

Explanation:

The question involves dividing a certain number of pizza slices equally among friends. Initially, we have 2 pizzas and each pizza is cut into 8 slices, making a total of 16 slices. To find out how many slices each person ate when the amount is the same for everyone, we simply divide the total number of slices by the number of friends.

Total number of slices: 2 pizzas x 8 slices per pizza = 16 slicesNumber of friends: 3Slices per person: 16 slices \/ 3 friends = 5 and 1/3 slices per person

Since a pizza slice cannot be split into a third naturally, practically, each friend would eat 5 slices and a little bit more from another slice.

Other Questions
In this assignment you will implement a class called "string_class". Place the class declaration in the file "string_class.h" and the class implementation in the file "string_class.cpp". The class has the following characteristics"1. A private string variable "current_string".2. A default constructor that sets "current_string" to an empty string ("").3. An explicit-value constructor that sets "current_string" equal to the argument that is passed to the explicit-value constructor when a string_class object is declared.4. A public member Boolean function called "palindrome" that returns true if the current_string reads the same forward asit does backwards; otherwise it return false. For example "madam", "463364", and "ABLE WAS I ERE I SAW ELBA" are all palindromes.5. A public member string function called "replace_all" that accepts two string arguments, " old_substring" and "new_substring". The function will return a copy of the string "current_string" with each occurrenceof "old_substring" replacedby "new_substring". For example, when the function is invoked, if current_string = "aaabbacceeaaa", old_substring = "aa", and new_substring= "zzz", then after execution of the function, current_string = "zzzabbacceezzza", and the function will return "zzzabbacceezzza". NOTE: DO NOT USE THE STRING CLASS FUNCTIONS "find", "replace", or "substr".6. Overload the insertion operator ( Type the correct answer in the box. Spell all words correctly. On what does consumer's willingness to pay depends? Consumers' willingness to pay depends on their income and prices of related goods.Type the correct answer in the box. Spell all words correctly. On what does consumer's willingness to pay depends? Consumers' willingness to pay depends on their income and prices of related goods. Convert this ARMv8 machine code into ARMv8 Assembly Language instructions. 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In project 2 you will be using female heights to answer a variety of questions. As practice for this project, please address the bulleted items below for male heights. It will be necessary to know that the average height for men is assumed to be 70 inches with a standard deviation of 4 inches. To receive full credit, you also need to comment on two other posts from your classmates (you can just state whether or not you agree with their solution and if not, what you did differently).George Washington was 6 feet tall. Find the z-score for George Washington. Find the probability that a randomly selected individual will be as tall or taller than George Washington. Interpret both the z-score and the probability in a sentence. . ___ relates to individual and group decisions -judgments about what is right and wrong in a particular decision making situation and ___ deals with the total effect of marketing decisions on society. A Ethics; social responsibility B Ethics; codes of conduct C Social responsibility; ethics The boards cried beneath my feet in pain as i crept across the room. Hearing example: In which of the following conditions does arbitrage occur? A. When a firm sells a product at higher prices to make a profit from relatively fewer sales.B. When a firm prices its products at the least cost, risking losses, in order to grab market share.C. When a firm offers a product at low prices through discount coupons and promotions. D. When a firm purchases products in a country where prices are lower and resells them in a country where prices are higher.E. When a firm imports products from a manufacturer and distributes them directly through retail outlets.