Find the value of x in each of the following
2x/7-3=2

Answer:

Step-by-step explanation:

Method

The smallest the third side can be is something just larger than 2

You get 2 by subtracting10 and 8. The third side is just a bit larger. 8 and 2 will make up the length of 10 so you cannot use 2 itself

The largest value possible is just under 18. You get 18 by adding 8 and 10 together. So to get a triangle, you need just under 18.

Answer

2<s<18

A

Answer:  slope = 1/6

Reason:

The given equation is in slope-intercept form y = mx+b

m = 1/6 = slope

b = 3/2 = y intercept

Answer:

A-19.5

Step-by-step explanation:

You take 39 and times it by 50%

The divide 50 by 100

39 times 50/100

=19,5

Answer:

D. 78

Step-by-step explanation:

Answer:

Perimeter = 12.5 cm

Step-by-step explanation:

    d = 7 cm

    [tex]\sf \boxed{\text{Circumference of quarter circle =$\dfrac{1}{4} \pi d$}}[/tex]

                                                       [tex]\sf = \dfrac{1}{4}*\dfrac{22}{7}*7\\\\ =\dfrac{11}{2}\\\\ = 5.5 \ cm[/tex]

   Perimeter = radius + radius + circumference of quarter circle

                     = diameter + circumference of the quarter circle.

                      = 7  + 5.5

                      = 12.5 cm

Answer:

24.997

Step-by-step explanation:

its actually really hard for me to explain im sorry i only know the answer-

Answer:

x 1 2 3 4 5

y 5 10 15 20 25

in x =n+1

in y=5n

Step-by-step explanation:

ANSWER MY RECENT question

Answer:

Step-by-step explanation:

The option that is correct about the central limit theorem is D (II only).

According to the central limit theorem, if you have a population with a mean and standard deviation and take sufficiently large random samples from it with replacement, the distribution of the sample means will be nearly normally distributed.

As we know about the central limit theorem, the distribution of the sample means is approximately normal. Therefore, the option that is correct about the central limit theorem is D (II only).

Learn more about Central Limit Theorem:

https://brainly.com/question/18403552

#SPJ1

Answer: 10 Slices

Step-by-step explanation:

10 slices of cheese is about $0.24 a slice.

12 Slices of cheese is about $0.26 a slice.

So 10 slices is the better deal.

Answer:

5.7 feet

Step-by-step explanation:

Given:

[tex]\text{Height of triagle: 5 ft}[/tex]

Formula;

[tex]\text{Area of triangle}= \dfrac{1}{2} \times \text{Base} \times \text{Height}[/tex]

Substitute the height and the area in the formula;

[tex]\implies\text{Area of triangle}= \dfrac{1}{2} \times \text{Base} \times \text{Height}[/tex]

[tex]\implies14.25 = \dfrac{1}{2} \times \text{Base} \times 5[/tex]

Use cross multiplication;

[tex]\implies14.25 = \dfrac{1}{2} \times \text{Base} \times 5[/tex]

[tex]\implies14.25 \times 2= \text{Base} \times 5[/tex]

Simplify the left hand side;

[tex]\implies14.25 \times 2= \text{Base} \times 5[/tex]

[tex]\implies28.5= \text{Base} \times 5[/tex]

Divide both sides of the equation by 5;

[tex]\implies\dfrac{28.5}{5} = \dfrac{\text{Base} \times 5}{5}[/tex]

[tex]\implies \text{Base} = \dfrac{28.5}{5} = 5.7 \ \text{ft}[/tex]

Therefore, the measure of the base is 5.7 feet.

Answer:

5.7 feet

Step-by-step explanation:

The area formula for a triangle: A=(1/2) Base x Height

1. What we know: 14.25=(1/2)Base x 5

2. Now isolate "base" to get the answer. First, divide by 1/2. Dividing by 1/2 is the same as multiplying by 2. Leaves us with: 28.5=Base x 5.

3. The last thing we have to do is divide 5: 5.7=base.

4. To make sure, check with the formula: (1/2) 5.7 x 5=14.25

The probability of selecting a penny is 4/15

The probability of selecting a nickel is 1/3

The probability of selecting a dime is 7/30

The probability of selecting a dime or a quarter is 2/5

From the formula for probability,

[tex]P(A) = \frac{Number\ of\ favourable\ outcomes\ to\ A}{Total\ number\ of\ possible\ outcomes}[/tex]

Total number of possible outcomes = 30

[tex]P(penny) = \frac{8}{30}[/tex]

[tex]P(penny) = \frac{4}{15}[/tex]

The probability of selecting a penny is 4/15

[tex]P(nickel) = \frac{10}{30}[/tex]

[tex]P(nickel) = \frac{1}{3}[/tex]

The probability of selecting a nickel is 1/3

[tex]P(dime) = \frac{7}{30}[/tex]

The probability of selecting a dime is 7/30

First, we will calculate the probability of selecting a quarter

[tex]P(quarter) = \frac{5}{30}[/tex]

[tex]P(quarter) = \frac{1}{6}[/tex]

Then, the probability of selecting a dime or a quarter is

[tex]P(dime \ or \ quarter) = \frac{7}{30}+ \frac{1}{6}[/tex]

[tex]P(dime \ or \ quarter) = \frac{7+5}{30}[/tex]

[tex]P(dime \ or \ quarter) = \frac{12}{30}[/tex]

[tex]P(dime \ or \ quarter) = \frac{2}{5}[/tex]

The probability of selecting a dime or a quarter is 2/5

Hence,

The probability of selecting a penny is 4/15

The probability of selecting a nickel is 1/3

The probability of selecting a dime is 7/30

The probability of selecting a dime or a quarter is 2/5

Learn more on Probability here: https://brainly.com/question/251701

#SPJ1

Step-by-step explanation:

[tex]at \:x = 0 \: y = 5 \\ at \:x = 1 \: y = 20 \\ y = mx + b \\ b = 5 \\ 20 = m + 5 \\ m = 15 \\ y = 15x + 5[/tex]

The constant of proportionality that relates the distance traveled to the elapsed time represented by this data will be 6.

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

Eric conducted an experiment in his science class and recorded the data in a table.

Eric’s science experiment, time (seconds), 3, 6, 9, 12, 15, 18, distance (ft), 18, 36, 54, 72, 90, 108.

Let x be the time and y be the distance.

Let the distance and time be linear to each other. Then the linear equation is given as

y -  36 = [(36 - 18) / (6 - 3)] (x - 6)

y - 36 = 6 (x - 6)

       y = 36 + 6x - 36

       y = 6x

Then the constant of proportionality that relates the distance traveled to the elapsed time represented by this data will be 6.

More about the linear system link is given below.

https://brainly.com/question/20379472

#SPJ1

Answer:

1) 4*(-2)-3=-11

2) 5(0+1)=5*1=5

3) 3*-9+4=-23

4)(12-1)6=66

5) -7*(-1)=7

Step-by-step explanation:

Answer:

Positive corralation

Step-by-step explanation: Algebra 1A-B

Answer: 20

Step-by-step explanation:

1 candy into 1/4 is 4 pieces
5candy will be 20 pieces

Explanation:

The point (3,a) means that x = 3 and y = a pair up together

Plug in those values and compute 'a'

y = 9-4x

a = 9-4(3)

a = 9-12

a = -3

The point (3, a) updates to (3, -3)

The point (3, -3) is on the line y = 9-4x

Answer:

f(x) ≈ 58.20x2 + 18.96x + 34.46

Step-by-step explanation:

Notice that the year data are evenly spaced. Check the first differences between the total number or units to see if the data set is linear.

First Differences

113 − 34 = 79

304 − 113 = 191

615 − 304 = 311

1042 − 615 = 427

1584 − 1042 = 542

Because the first differences are not constant, a linear model is not the best model of the data. Check the second differences to see if the data set can be modeled by a quadratic function.

Second Differences

191 − 79 = 112

311 − 191 = 120

427 − 311 = 116

542 − 427 = 115

The second differences are approximately the same so we will use a quadratic function to represent the data.

Enter the data into a calculator. Plot the data and find the quadratic regression equation that best models the data.

f(x) ≈ 58.20x2 + 18.96x + 34.46

Answer:

=6.186

explanation;

first divide then u will get this

6+1×0.1+8×0.01+6×0.001

second multiply then you will get this

6+0.1+0.08+0.006

third you will get the answer which is

=6.186

Step-by-step explanation:

Diameter =30

radius=30/2=15

area =πr²

=π×15²

= π×(15)(15)

=225π cm² or 706.95cm²

circumference C=πD

C=3.142×30cm

C=30πcm or 94.26cm

Answer:

x = −3.737034184 or 1.070367517

Step-by-step explanation:

This is my working for this question

−3x^2−(8x−12)=8x−12−(8x−12)

−3x^2−8x+12=0 // first make it =0

Now we know a=-3, b=-8, c=12

then use quadratic formula for answer

x = −3.737034184 or 1.070367517

[tex]\qquad\qquad\huge\underline{\boxed{\sf Answer}}[/tex]

Things we need to keep in mind in order to plot a point :

Signs of the coordinates shows which side it lies on.

similarly,

Now, let's proceed ~

First check out its x - coordinate on origin and move up or down according to its y - coordinate and you will get your required point.

So, for point (1 , 0) it has y - coordinate = 0, so it lies on x - axis at the x - coordinate of 1.

The function that has a vertex on the y-axis is f(x) = (x - 2)(x + 2)

For a function to have its vertex on the y-axis, then the coordinate of the vertex must be:

(h,k) = (0,y)

A quadratic function is represented as:

f(x) = (x - h)^2 + k

So, we have:

f(x) = (x - 0)^2 + k

Evaluate

f(x) = x^2 + k

From the list of options, we have:

f(x) = (x - 2)(x + 2)

Expand

f(x) = x^2 - 4

Hence, the function that has a vertex on the y-axis is f(x) = (x - 2)(x + 2)

Read more about vertex at:

https://brainly.com/question/18797214

#SPJ4

Answer:

Step-by-step explanation:

L can be  1/3, 1/3

Answer:

hence the midpoint of AB is 1/2,1

Step-by-step explanation:

[tex]midpoint \: of \: ab = ( \frac{ - 2 + 3}{2} )( \frac{5 - 3}{2} ) \\ = ( \frac{1}{2} )(1)[/tex]

Answer:

k=9

Step-by-step explanation:

Here's how to solve this equation

Step 1: -7(k+9)=9(k-5)-14k

Step 2: -7k-63=(9k-45)-14k

Step 3: -7k-63=-5k-45

Step 4: -7k=-5k+18

Step 5: -2k=18

Solution: k=-9

Good luck on your assignment, hope this helps

Answer:

1 ) x = y = 9

2 ) x = 5, y = 25

3 ) x = 15, y = 9

4 x = 30, y = 15

Step-by-step explanation:

1 )

The shape is parallelogram.

In parallelogram, alternate interior angles are equal.

9x and 45 are alternate interior angles.

So,

9x = 45

Divide 9 on both sides,

x = 45 / 9

x = 5

In square, opposite side lengths are equal.

2y = 18

Divide 2 on both sides,

y = 18 / 2

y = 9

2 )

The shape is parallelogram.

In parallelogram, the sum of adjacent angles are 180.

In parallelogram, opposite angles are equal.

5y and 55 are adjacent angles,

5y + 55 = 180

5y = 180 - 55

5y = 125

Divide 5 on both sides,

y = 125 / 5

y = 25

11x and 55 are opposite angles,

11x = 55

Divide 11 on both sides,

x = 55 / 11

x = 5

3 )

The shape is parallelogram.

In parallelogram, alternate interior angles are equal.

2x and 30 are alternate interior angles,

2x = 30

Divide 2 on both sides,

x = 30 / 2

x = 15

x + y and 24 are also alternate interior angles,

x + y = 24

15 + y = 24

y = 24 - 15

y = 9

4 )

The shape is a square.

Square is also a parallelogram.

All the four angles in a square are 90 and are equal.

So,

3x = 90

Divide, 3 on both sides,

x = 90 / 3

x = 60

6y = 90

Divide 6 on both sides,

y = 90 / 6

y = 15

7 hours 30 minutes

Sure hope this helps you :D

If Josephine alone can correct test papers in 5 hours and if she takes helps from an assistant takes 3 hours then time taken by assistant alone to try and do the full add 7.5 hours.

An average is basically total sum divided by number whose sum is found. Average= sum/n.

Josephine takes 5 hours to  correct her students test papers.

Josephine and assistant takes 3 hours to correct papers.

Let the test paper contains 100 questions.

In 1 hour Josephine checks 100/5 =20 questions per hour.

In 1 hour Josephine and Assistant checks 100/3=33.33 questions per hour.

In 1 hour assistant checks 33.33-20=13.33 questions.

Time taken by assistant to try to to work alone=100/13.33=7.5 hours.

Hence to try to to the work alone the assistant takes 7.5 hours.

Learn more about average at https://brainly.com/question/20118982

#SPJ2

Answer:

Map Scale Equivalents

Map Scale Miles to Inches

1:100,000 1.6 miles = 1 inch

1:126,700 2 miles = 1 inch

1:150,000 2.4 miles = 1 inch

1:200,000 3 miles = 1 inch

Step-by-step explanation:

Answer: 12 divided by 3 equals 4

Step-by-step explanation: this should answer your question if not, then please feel free to message me.

According to the given information, the difference between 12 and 3 is  9 and the quotient of 12 and 3 is 4. Hence, the Product of the difference and the quotient is 36.

Use the concept of multiplication defined as:

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

To find the product and quotient you mentioned,

Break it down step by step.

First, let's find the difference between 12 and 3.

The difference is the result of subtracting one number from another.  So,

12 - 3 = 9.

Next, let's find the quotient of 12 and 3.

The quotient is the result of dividing one number by another. So,

12 ÷ 3 = 4.

Finally, to get the product of the difference and the quotient,

We multiply them together.

In this case,

9x4 = 36.

Hence, the product of the difference between 12 and 3 and the quotient of 12 and 3 is 36.

Learn more about the multiplication visit:

https://brainly.com/question/10873737

#SPJ3