Please help me. I am not very good at math.

Please Help Me. I Am Not Very Good At Math.

Answers

Answer 1

Answer: Did you get the help you needed?

Step-by-step explanation:


Related Questions

the sides of a triangle are xcm,x+3cm and 10cm. If x is a whole numberof x, find the highest value of x

Answers

Highest possible whole number is 3.

What is properties of triangle?

A triangle has three sides, three angles, and three vertices, which are its characteristics. A triangle's total internal angles are always equal to 180 degrees. This is referred to as the triangle's angle sum property. Any two triangle sides can add up to a length that is longer than the third side.

Given Data

Sum of length of any two sides of a triangle is always equal to the third side.

For sides a, b and c

We must have, a + b > c

Sides of triangle are x, x +3 and 10cm

So,

x + x+ 3 > 10

2x > 10 - 3

2x> 7

x > [tex]\frac{7}{2}[/tex]

Possible values of x are 3.5, 3, and so on.

Highest possible whole number is 3.

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Suppose that prices increase 2.5% each year for 10 years. How much will a jacket that costs 100 today cost in 10 years?

Answers

Answer:

$125

Step-by-step explanation:

Find out what the percentage increase is in ten years.

2.5%->change to decimal thingy (divide by 100) 0.025 then multiply it by the total amount of years(10): 0.025(10)= 0.25- 25%

The cost percentage in 10 years is 25%

Next multiply your new percentage by the jacket's original cost: 0.25(100)=25

So $25 is the amount that the jacket has increased over ten years

Add 25 to 100 to fin the cost of the jacket in 10 years.

Kinda a confusing explanation but the answer is right.

A motor boat whose speed is 18 km/h in still water. It takes 1 hour more to go
24 km upstream than to return downstream to the same spot. Find the speed of the boat?

Answers

The speed of the stream is 6 [tex]km/h[/tex]

Let the speed of the stream be x km/h.

Therefore, the speed of the boat upstream = (18 – x) km/h, and the speed of the boat

downstream = (18 + x) km/h.

The time is taken to go upstream = distance/speed

[tex]24/(18-x)[/tex] hours.

Similarly, the time is taken to go downstream =

[tex]24/(18+x)[/tex] hours.

According to the question,

[tex]24/(18-x) - 24/(18+x) = 1[/tex]

[tex]x^{2} +48x-324=0[/tex]

Using the quadratic formula, we get

[tex]x=\frac{-48+\sqrt{48^{2}+1296 } }{2}[/tex]

x = 6 or -54

Since x is the speed of the stream, it cannot be negative. So, we ignore the root x = – 54.

Hence the speed of the stream is 6 km/h.

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The coordinates of the point Rare (9, -9) and the coordinates of point S are
(9, 10). What if the distance, in units, between the point R and point S?

Answers

Answer:

Formula for length between coordinates is given as √(x1-x2)²+(y1-y2)², which x and y being the coordinates of the points.

Length of RS = √(9-9)²+(-9-10)²

= √0+(-19)²

= √361

= 19 units

Answer:

RS =  19 units

Step-by-step explanation:

Given points

R(9, - 9) and S(9, 10)

Since both of the points have same x- coordinate of 9, the distance between the points is the absolute value of the difference of y-coordinates:

RS = | - 9 - 10| = | - 19| = 19 units

What form is the number 750,000 written in?

A: Expanded

B: Standard

Answers

Answer:

A. standard form.

Step-by-step explanation:

Standard form = 750,000

Expanded form = 700,000 + 50,000

Three students were scheduled to give book reports in 1 hour.


After the first report, 2/3 hour remained (HINT: this means the first persons' report was 1/3 of an hour)


The next report took 1/6 hour. What fraction remained?

Answers

Subtracting Fractions

When we add or subtract fractions, we always have to make sure that all the fractions involved have a common denominator.

Solving the Question

We're given:

After the first report, [tex]\dfrac{2}{3}[/tex] hours remainedThe second report took [tex]\dfrac{1}{6}[/tex] hours remained

To find the fraction representing the remaining time, subtract [tex]\dfrac{1}{6}[/tex] from [tex]\dfrac{2}{3}[/tex]:

[tex]\dfrac{2}{3}-\dfrac{1}{6}[/tex]

Make both denominators the same; multiply [tex]\dfrac{2}{3}[/tex] by [tex]\dfrac{2}{2}[/tex] to change its denominator to 6:

[tex]= \dfrac{4}{6}-\dfrac{1}{6}\\\\= \dfrac{3}{6}[/tex]

Simplify the fraction:

[tex]= \dfrac{1}{2}[/tex]

Therefore, [tex]\dfrac{1}{2}[/tex] the hour remained.

Answer

[tex]\dfrac{1}{2}[/tex] the hour remained

1. 2(x-4) + 4 = 16.
Melissa and Kristina are solving the same equation:
The table below shows their FIRST step in solving the
Melissa says:
In Step 1 of solving this problem, I will divide
everything in the equation by 2 to get:
(x-4) +2=8
Kristina says:
In Step 1 of solving this problem, I will multiply 2 by
each term inside the parenthesis to get:
2x 8+4 = 16
1a) Mrs. Chow gives them both full credit for completing the problem correctly. How is this possible?
*We already know they arrive at the same correct answer. How else can you explain why both methods work?

Answers

It is possible that Mrs. Chow gives them both full credit for completing the problem correctly because they correctly used relevant properties of equality

How to solve Algebra Word Problems?

We are given the algebraic expression as;

2(x - 4) + 4 = 16

Now according to Melissa, her first step is to divide everything by 2 to get; (x - 4) + 2 = 8

Now, what Melissa has done is to use division property of equality to get that solution.

Whereas, Kristina solved the fitrst step by expanding the bracket to get;

2x - 8 + 4 = 16

Kristina used the algebraic property known as distributive property of equality.

Since they both used correct properties of equality, then they are both correct.

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im so done with math

Answers

Answer is 2x + 2
The last answer

Step by step

See my attachment, add or subtract blocks of variables (x) or constants (#)

3x + 5 -1x -3
Combine

2x + 2

y = x + 2 in standard form

Answers

Answer: The answer is x-y = -2

In a recent survey, 2/3 of the lions said that
they were happy to serve as King of the
Forest, while another 1/9 thought it was way
too much responsibility. If 14 lions gave one of
these two answers, how many lions were
surveyed in total? Make sure your answer is
fully reduced.

Answers

The total number of lions that were surveyed is 18.

How to calculate the value?

It should be noted that based on the information given in the survey, 2/3 of the lions said that they were happy to serve as King of the forest, while another 1/9 thought it was way too much responsibility and 14 lions gave one of these two answers.

The total lions that were surveyed will be illustrated thus:

Let the total number of lions be x.

Therefore, (2/3 + 1/9)x = 14

= 7x/9 = 14

Cross multiply

7x = 9 × 14

x = (9 × 14) / 7

x = 9 × 2

x = 18

Therefore, the total number of lions is 18.

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a certain ceiling is made up of tiles. Every square meter of ceiling requires 10.75 tiles .fill in the table with the missing values

Answers

Answer:

1) 1 m² = 10.75 tiles

2) 10 m² = 107.5 tiles

3) 9.3 m² of tiles = 100 tiles

4) a m² = 10.5a tiles

Step-by-step explanation:

The table is missing and so i have attached it.

From the question, we are told that each square meter of ceiling requires 10.75 tiles. Thus on the first row;

1 m² = 10.75 tiles

The second row of the table shows 10 m² of tiles.

Thus, by proportion, 10 m² of tiles will require; 10 × 10.75 tiles = 107.5 tiles

The third row shows us 100 tiles required.

Since 10.75 tiles is for 1  m² , then by proportion, we can find the square meters of tiling of 100 tiles. Thus;

100 tiles will use; 100 × 1/10.75 = 9.3 m² of tiles

The fourth row shows us square meter of tiles to be a.

Thus by proportion, number of tiles required for this square meter of tile is;

a × 10.75/1 = 10.75a tiles

a researcher studies a group of 25 preschool children in order to answer questions about the entire population of preschool children. what general categories of statistical techniques will this researcher be using?

Answers

The researchers use inferential statistics.

Inferential statistics uses measurement from a sample, comparing groups and making generalizations about the large population. Inferential statistics are based on a test statistic calculated based on a formula. The test statistic along with degrees of freedom to determine the difference between the study population. With inferential statistics, the researcher will draw conclusions from extrapolations.  

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HELP FAST
which is a correct classification of DEF with vertics D(-3,2) E(-2,3) and F(1,0)

Answers

The correct classification of DEF is a right-angled scalene triangle.

We are given three vertices D(-3, 2), E(-2, 3), and F(1, 0).The length of the side DE is √[(3-2)² + (-2-(-3))²] = √2.The length of the side EF is √[(0-3)² + (1-(-2))²] = 3√2.The length of the side FD is √[(2-0)² + (-3-1)²] = 2√5.The lengths of all the sides of the triangle are unequal.Thus, DEF is a scalene triangle.Apply the Pythagorean theorem.We notice that :DE² + EF² = FD²(√2)² + (3√2)² = (2√5)²2 + 18 = 2020 = 20Thus, DEF is also a right-angled triangle.Hence, DEF is a right-angled scalene triangle.

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Nicholas has nickels, dimes and quarters that total $12.30. The number of dimes is 3 more than twice the number of nickels, and the number of quarters is three times the number of nickles. how many coins of each kind does he have?

Answers

Using a system of equations, the amounts of each coin that he has is given as follows:

Nickels: 12.Dimes: 27.Quarters: 36.

System of equations

The variables to the system of equations are given as follows:

Variable x: number of nickels.Variable y: number of dimes.Variable z: number of quarters.

Nicholas has nickels, dimes and quarters that total $12.30, hence, considering the value of each coin:

0.05x + 0.1y + 0.25z = 12.30.

The number of dimes is 3 more than twice the number of nickels, hence:

y = 2x + 3.

The number of quarters is three times the number of nickles, hence:

z = 3x.

Then we can solve for x as follows:

0.05x + 0.1y + 0.25z = 12.30.

0.05x + 0.1(2x + 3) + 0.25(3x) = 12.30.

x = 12. (nickels)

Then the other amounts are as follows:

y = 2x + 3 = 27(dimes).z = 3x = 36 (quarters).

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In a certain chemical, the ratio of zinc to copper is 4 to 17. A jar of the chemical contains 374 grams of copper. How many
grams of zinc does it contain?

Answers

Answer:

88 g

Step-by-step explanation:

zinc : copper

4 : 17

? : 374

374 ÷ 17 = 22

22 × 4 = 88

Help please. ASAPPP!

Answers

Answer:

Step-by-step explanation:

f(15) = F(75-2times 5)

Answer: f(15) = F(75-2times 5)

Step-by-step explanation: f(15) = F(75-2times 5)

10) Convert 6 inches to centimeters

Answers

1) 1 in is 2.54 centimeters

1 inch = 2.54 centimeters

2) Multiply both by 6

6 inches = 2.54 * 6

6 inches = 15.24


Answer

15.24
Answer: 15.24 have a good day

Which of the following equations represents the parabola with vertex at (3, 2) and directrix y = 4?

a (x − 3)2 = −8(y − 2)

b (x + 3)2 = 8(y + 2)

c (y − 2)2 = −4(x − 3)

d (y + 2)2 = 4(x + 3)

Answers

The equation of parabola is  (x − 3)² = −8(y − 2).

What is parabola?

A parabola is a U-shaped curve that is drawn for a quadratic function, f(x) = ax²+ bx + c. The graph of the parabola is downward (or opens down), when the value of a is less than 0, a < 0. The graph of parabola is upward (or opens up) when the value of a is more than 0, a > 0.

Given:

Vertex = (3, 2)

Directrix, y =4

line of symmetry is the Y value in the vertex = 2

directrix, y= 2 - p

  p = -2

and, a= 1/4p = -1/8

and, focus = (3, (2-2)) = (2, 0)

Now, equation of parabola

y= -1/8 (x- 3)² + 2

-8y = (x- 3)² + 2

(x − 3)² = −8(y − 2)

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f(x) = 6x³ - 23x² - 6x + 8 if (x-4)

Answers

Answer:

(x - 4) (2x - 1)(3x + 2)

Step-by-step explanation:

Dividing:

x - 4)6x^3 - 23x^2 - 6x + 8 (6x^2 + x- 2 <----Quotient

        6x^3 -24x^2

                       x^2 - 6x

                       x^2 - 4x

                              -2x + 8

                              -2x + 8

6x^2 + x - 2

= 6x^2 - 3x + 4x - 2

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

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

Write an equation of the line passing through point P (0,1) that is parallel to the line y=-2x+3

Answers

The equation of the line passing through point P (0,1) = y=2x-1

What is Equation of line ?

A straight line's general equation is y = mx + c, where m denotes the gradient and y = c denotes the point at which the line crosses the y-axis. On the y-axis, this value c is referred to as the intercept.

Rise over run = (y+1)/(x-0)

                      =(y+1)/x =-2

 slope is (y+1)/(x-0) =(y+1)/x

                               =-2;

-2x=y+1, or

y+2x =-1, or

y=-2x-1

in the form of the slope intercept

The parallel line with the value of y=-2x+3 has been moved down by 4 units. The point at which this line crossed the y-axis was y=3. Now, with a 4 downshift, it crosses the y-axis at y=1.

Plugging the location (0,1) into the new equation:

y=2x-1 yields

1 = 2(0)-1

to validate the math.

Hence, the Equation of line passing through point P(0,1) is y=2x-1

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Is 141/47 a repeating decimal

Answers

the answer is no.

because 47 times 3 gives 141

where 3 is a non-decimal

Answer:

141/47 Is not a repeating decimal.

Step-by-step explanation:

141 ÷ 47 Is not a repeating decimal because 47 × 3 = 141

the graph of linear function f is shown on the grid. what is zero of the function?

Answers

The zero of a function is the value of x of the point on which the value of y is equal to zero.

You can observe in the graph the such a point is the point (1,0).

Hence, the zero of the function is x = 0

1. Write a matrix to represent the system.
2a - 3b = 6
a + b = 2
O [2 -3 6]
[ 1 1 2]
O [2 1 -3]
[1 6 2]
O [a b 6]
[a b 2]
O [2a -3b 6]
[a b 2]

2. Write the system of equations represented by the matrix.
[0 1 2 4]
[-2 3 6 9]
[1 0 1 3]
O x + 2y = 4
-2x - 3y + 69 = 0
x + y = 3
O x + 2y = 4
-2x - 3y + 6 = 9
x + y = 3
O y + 2z = 4
-2x + 3y + 6z = 9
x + z = 3
O x + 2z = 4
-2x - 3y + 6 = 9
x + y = 3

Please help, I'm so confused. Xd Brainliest to whoever is correct!

Answers

From the relations between matrices and system of equations, we have that:

1. The matrix is:

[tex]\left[\begin{array}{ccc}2&-3&6\\1&1&2\end{array}\right][/tex]

2. The system is:

y + 2z = 4.-2x + 3y + 6z = 9.x + z = 3.

What is a system of equations?

A system of equations is when multiple variables are related, and equations are built to find the numeric values of each variable, according to the relations built in the problem.

There are multiple ways to represent a system, and one way is using matrices, in which:

The first n - 1 rows represent the coefficients of the input variables.The last row represents the results of the operations.

For item 1, the system is:

2a - 3b = 6a + b = 2.

Hence the matrix is:

[tex]\left[\begin{array}{ccc}2&-3&6\\1&1&2\end{array}\right][/tex]

In item b, we have the matrix and want to build the system, hence:

y + 2z = 4 (first element of 0, which is the coefficient of x for the first equation).-2x + 3y + 6z = 9.x + z = 3. (second element of 0, which is the coefficient of y for the third equation).

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Please help I know it’s only 10 points but please

Answers

Answer:

The average change is -0.7 per hour.

Step-by-step explanation:

-2.8/4

You know that in 4 hours the temperature change is -2.8degF, so:
4h = -2.8
Where h is hours
You want to find 1 hour so you divide both sides by 4:
h = -0.7

So the answer is -0.7degF

what is
y +2(y-5)=2y+2

Answers

Answer:

y = 12

Step-by-step explanation:

y +2(y-5)=2y+2

y + 2y - 10 = 2y +2

3y - 10 = 2y +2

3y - 2y = 2 + 10

y = 12

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

check

12 + 2 * (12 - 5) = 2 * 12 + 2             (remember PEMDAS)

12 + 24 - 10 = 24 + 2

26 = 26

the answer is good

double the difference of w and u, then multiply the result by v

Answers

Translating the given words into algebraic expression it becomes  2v(w-u) .

In the question ,

the word phrase is given as" double the difference of w and u, and then multiply the result by v "

for translating into algebraic expression , we proceed step by step

step 1 : difference of w and u

we get , (w - u)

step 2 : double the difference of w and u ,

we get , 2(w-u)

step 3 : then multiply the result by v ,

we get , 2(w-u)*v

= 2v(w-u)

Therefore , translating the given words into algebraic expression , the expression is 2v(w-u) .

The given question is incomplete , the complete question is

Translate the following word phrase into an algebraic expression , "double the difference of w and u, then multiply the result by v "

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Watch help video
Tyler bought 8 chicken wings for $16.00. If Tyler spent $46.00, how many chicken
wings did he buy?

Answers

Answer:

Step-by-step explanation:

23. 16 divided by 8 is 2, which means he spent 2 dollars on 1 wing. So 46 divided by 2 is 23.

For 46 dollars, Tyler can buy 23 chicken wings.

What is the unitary method?

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Given that, Tyler bought 8 chicken wings for $16.00.

To find the number of chicken wings, first find the cost of one chicken wing and to find number of chicken wings divide total cost by cost of one chicken wing.

So, the cost of each chicken wing is 16/8

= $2

So, the cost of each chicken wing is 2 dollars.

Tyler spent $46.00 on chicken wings.

Number of chicken wings = 46/2

= 23

So, the number of chicken wings are 23.

Therefore, Tyler can buy 23 chicken wings for $46.

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Sierra hiked to the 5½ mile marker. She then hiked 3
more miles. At noon she hiked back to where she started.
How many miles did Sierra hike in total?

Answers

Answer:

17 miles

Step-by-step explanation:

5 1/2 + 3= 8 1/2 x 2 = 17

18 hours: one day (ratio)​

Answers

Answer:

It's 3.4

Step-by-step explanation:

get sum of 18 and 24

=42

18/42=3/7

24/42=4/7

Take the numerators which are 3and4

ASAP PLEASE!! The points H, I, J and K all lie on the same line segment, in that order, such that the
ratio of HI: IJ: JK is equal to 1: 3: 1. If HK = 25, find HJ.

Answers

The value of HJ in the line segment  = 20

How to find the value of HJ?

Points H, I, J, K  lie on the same line segment in order.

HI : IJ : JK = 1: 3: 1

HK = 25

Let us consider the ratios,

Let H I = x

Let IJ = 3x

Let JK = x

⇒In the line segment,

HK = HI+ IJ+ JK

25  = x +3x +x

25  = 5x

x = 5

⇒In the line segment,

HJ = HI +IJ

HI = x

IJ = 3x

HJ = HI +IJ

    =  x + 3x

    = 4x

    = 4*5

HJ = 20

What is a line segment?

An area of a line that can connect two points is known as a line segment. Any portion of a line with two endpoints is referred to as a line segment. A line segment has a set length as opposed to a line.Both metric measurements, such as milli meters and centimeters, as well as conventional units, such as feet or inches, can be used to measure the length of a line segment.

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