Distribute 28(x + 0.7)
28x + 19.6
28x + 28.07
28x + 0.7
(x+0.7)/28​

Answer: 18

Step-by-step explanation:

8--20

x--45

x=45*8/20

x=18

The value of m for equation  (m - 3)r² + 9r - 2 = 0 is 57/8.

A quadratic equation is a second-order polynomial equation in a single variable x , ax2+bx+c=0. with a ≠ 0 .

The given equation is (m - 3)r² + 9r - 2 = 0

For the equation to have real and equal roots, the discriminant should be 0.

b²-4ac=0

a=m-3, b=9, c=-2

plug in the values in discriminant

81-4(m-3)(-2)=0

81-4(-2m+6)=0

81+8m-24=0

8m+57=0

m=57/8=7.125

Hence, the value of m for equation  (m - 3)r² + 9r - 2 = 0 is 57/8.

To learn more on Quadratic equation click:

https://brainly.com/question/17177510

#SPJ1

Answer:

x = 2.3

Step-by-step explanation:

you divide both sides of the equation by 10

Answer:

17

Step-by-step explanation:

Se suman todos los números y se divide por el número de números.

¡¡¡Espero que esto ayude!!!

(Translated to English: You add all the numbers together and divide by the number of numbers.  I hope this helps!!!)

Answer:

The motherboard

Step-by-step explanation:

cardsIt is the base of all chips and

Answer:

it is a since using the pythagoras theorium the brainly bahahaha

Step-by-step explanation:

the inner and the outer angle at a vertex of a triangle are complementary angles or a linear pair of angles.

that means together they have 180°.

180 = inner + outer = 48 + outer

outer = 132°

the exterior angle is 132°.

The point B and C are opposite to each other.

A number line is a mathematical visual representation of numbers on a straight line. The digits on a number line are positioned sequentially at regular intervals throughout its length. It frequently appears horizontally and might go on forever in any direction.

As seen from the number line, point A is one unit left of -1 which is -2. Since each mark is a difference of 1 and to the left is a negative value, point B is midway between -1 and 0 is half of -1 which is -0.5, point C is midway between 0 and 1 is basically half of 1 which is 0.5 and point D is halfway between 1 and 2 is exactly that 1.5

As per the numerical values of the given points, the two that are opposites to each other are points B and C. They both have a value of 0.5 on each end of the number line, one being negative while the other is positive, thus they are opposites of each other.

Therefore, points B and C are opposite to each other.

To learn more about Number line visit here:

https://brainly.com/question/24644930

#SPJ9

The given question is incomplete. Here is the complete question:

Which two points on the number line are opposites? A number line goes from negative 2 to positive 2 in increments of 1. There are 4 equal spaces between each number. Point A is 1 mark to the left of negative 1. Point B is halfway between negative 1 and 0. Point C is halfway between 0 and 1. Point D is halfway between 1 and 2.

Jasmine was not right in evaluating the expression. She didn't multiply the subtraction signs.

An algebraic expression consists of unknown variables, numbers and arithmetic operators.

To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number.

Therefore, let's evaluate Jasmine expression.

10 - (-3)

we have to open the bracket by multiplying the negative signs.

- × -  = +

Hence,

10 - (-3)  = 10 + 3 = 13

Therefore, Jasmine is wrong. Her mistake was not multiplying the minus sign.

learn more on evaluation here: https://brainly.com/question/724724

#SPJ1

The two ways to determine how much money Amit made in the two weeks are,

$5(3 + 2) = $25 and $5(3) + $5(2) = $25.

What is shell?

A hard, protective outer layer is typically produced by an animal that lives in the sea and is referred to as a shell, seashell, or simply a shell. The animal's body includes the shell. Beachcombers regularly discover empty seashells washed up on beaches.

Given: Amit sold 3 shells last week for $5 each.

And 2 more shells this week for $5 each.

So, the equation which represent the total money is,

$5(3) + $5(2) = $15 + $10 = $25.

Also we can express this equation as,

$5(3 + 2) = $5(5) = $25

Therefore, the two ways to determine how much money Amit made in the two weeks are,

$5(3 + 2) = $25 and $5(3) + $5(2) = $25

To know more about the shells, click on the link

https://brainly.com/question/26039758

#SPJ9

Answer: 14 is bigger than 8 and x is smaller than 8 so x would be a small number, i bet that x is = to 3 cm

Step-by-step explanation:

I don't know for SURE though :)

Answer:

y = x + 20

30 weeks

Step-by-step explanation:

The given scenario can be modelled using the linear equation:

[tex]y=mx+b[/tex]

where:

Mindy initially owns 20 pairs of shoes. Therefore, the initial value is b = 20.

If Mindy purchases 2 pairs but destroys 1 pair each week, then she is gaining 1 pair of shoes each week.  Therefore, the rate of change is m = 1.

Therefore, the equation is:

[tex]y=x+20[/tex]

where:

To find how long it will take for Mindy's closet to have 50 pairs of shoes, substitute y = 50 into the equation and solve for x:

[tex]\implies 50=x+20[/tex]

[tex]\implies 50-20=x+20-20[/tex]

[tex]\implies 30=x[/tex]

[tex]\implies x=30[/tex]

Therefore, it will take Mindy 30 weeks to have 50 pairs of shoes in her closet.

Answer: z=24/7

Step-by-step explanation:

Answer:

no no lose me das las respuestas

Answer: B

Step-by-step explanation:

The width = 23/4

The length = 2 × the width = 2 × 23/4 = 23/2                

The perimeter of the rectangle = 2 ( length + width)

                                                    = 2 (23/2 + 23/4 )

                                                    = 2 ( 69/4)

                                                    = 69/2

                                                    = 34 .1/2

He would pay $8500 interest if he can afford payments of $425 per month and can borrow the money at an interest rate of 4% compounded monthly for 5 years.

The expense of borrowing money is interest. It equates to a fee or additional charge the borrower pays the lender for the loaned amount, and is sometimes stated as a percentage. When you make a payment on a loan with simple interest, the money first goes toward the interest for that month and the rest is applied to the principal. Simple interest is a way to figure out how much interest will be charged on a sum of money at a specific rate and for a specific duration of time. Contrary to compound interest, where we add the interest of one year's principal to the next year's principal to compute interest, the principal amount under simple interest remains constant.

Given,

Principal = $425

Rate = 4%

Time = 5 years

Interest = Principal × Rate × time

Interest:

= 425 × 4×5

= 8500

He would pay $8500 interest if he can afford payments of $425 per month and can borrow the money at an interest rate of 4% compounded monthly for 5 years.

To learn more about interest, visit:

https://brainly.com/question/13324776

#SPJ13

The time at which the two bottles will have the same amount of water, using linear functions, is of:

26 seconds.

The slope-intercept representation of a linear function is given by the rule shown as follows:

y = mx + b

The coefficients of the function and their meaning are described as follows:

For the functions in this problem, we have that:

Hence the functions are given as follows:

The time at which they have the same amount is x for which:

P(x) = J(x)

65 - 2.5x = 20 - x

1.5x = 45

x = 45/1.5

x = 30 seconds.

However, at this time, the amount would be of:

J(30) = 20 - 30 = -10.

Which is a negative amount of water, not possible, hence they would have the same amount when Jason finishes, hence:

65 - 2.5x = 0

2.5x = 65

x = 65/2.5

x = 26 seconds.

The problem is:

Jason's water bottle has 20 ounces of water, and he is drinking ata rate of 1 ouncer per second. Pedro's water bottle contains 65 bunces of water, and he is drinking at a rate of 2.5 ouncers per second. At how many seconds, s, will the two bottles have the same amount of water if Jason and Pedro start drinking from each of their bottles at the same time?

A similar problem, also featuring linear functions, is given at https://brainly.com/question/24808124

#SPJ1

Answer:

30 years

Step-by-step explanation:

subtract devaughn's age from the sum of ages

Answer:

Step-by-step explanation:

t is given that a scuba driver descends in water for 2.8 minutes at a rate of   feet per minute.

Let's assume the descending position as negative.

The position at which the scuba driver will be after 2.8 minutes is :

= -  feet per minute × 2.8 minutes

= - 57.4 feet

Now , he sees a large fish and changes his direction and starts diving ascending at a rate of 25 feet per minute for 2 minutes.

Let's assume the ascending position as positive.

So , The position at which the scuba driver will be after 2 minutes after seeing large fish is :

= 25 × 2

= 50 feet

So , the scuba diver's position relative to sea level after the 4.8 minutes will be :

= -57.4 + 50

= -7.4 feet

This meant Scuba driver is 7.4 feet below sea level.

i is expression is equivalent to i233.

Given i233

We know that i2 = -1 , if we square (i2) we get (-1)2 = 1

So, if i is multiplied to (i2), we get i3 = (-1).i = -i

Again if i is multiplied to i3 , we get i4 = (-i).i = -i2 = -(-1) = 1

Hence, all even powers of i after 2, will give answer as 1

The sequence will continue as a cycle as i, -1, -i, 1

So, i233 can be rewritten as i232 + 1= i232.i

i233 = (i2)116 .i = (-1)116 . i

Since the power 116 is even , the term becomes 1.i = i

Therefore, i233 = i

To learn more about mathematical expression refer to:

https://brainly.com/question/4344214

#SPJ13

Answer: 3 1/3

Step-by-step explanation:

Each tick mark marks 1/3 of a space. A is at - 3 1/3. The absolute value of any number is positive and is just the number of spaces a dot is from zero. You can’t have a negative distance, so the answer is 3 1/3.

Answer:

30 x n - 60 = 20 x n

1 day

80

Step-by-step explanation:

The equation of a line which is parallel to the given line; y = 6x - 2 as required in the task content is; Choice D-y = 6x + 3.

It follows from the task content that the equation of a line which is parallel to the given equation; y = 6x - 2 is to be determined.

First, by comparison the given equation with the slope-intercept model of a linear equation; y = mx + c. where m is slope and c is y-intercept.

Slope, m = 6.

Hence, since parallel lines are lines which have equal slopes.

The slope of the required line is therefore; 6 and it's y-intercept (0, 3) has a y-coordinate of; 3.

The required equation of the line is therefore; y = 6x + 3.

The correct answer choice among the answer choices is; Choice D; y = 6x + 3.

Read more on slope of parallel lines;

https://brainly.com/question/10790818

#SPJ1

According to the given scale, 400 miles are 8 inches.

Scale

Scale refers the ratio that defines the relation between the actual figure and its model. And it is used in maps to represent the actual figures in smaller units.

Given,

A map has a scale of 1/2 inch equals 25 miles.

Here we need to find how many miles are 8 inches.

Through the given question we know that,

1/2 inches = 25 miles.

Then the 1 inch is equal to,

1 inch = 25 x 2 = 50 miles.

Therefore, the miles equivalent of 8 inches is written as,

=> 8 x 50

=> 400 miles.

Therefore, 8 inches is equal to 400 miles.

To know more about Scale here.

https://brainly.com/question/13819784

#SPJ1

The car's cost 3 years ago was $22,045.45.

According to the question,

We have the following information:

A new car costs $24,250, which is approximately 110% of what a comparable car cost 3 years ago.

Now, let's take the cost of car 3 years to be $x.

So, we have the following expression:

110% of x = 24250

110x/100 = 24250

Using the cross multiplication method:

110x = 24250*100

Dividing both sides by 110 will give us the value of x which is the required cost of car:

x = 2425000/110

x = $22045.45

Hence, the car's cost 3 years ago was $22,045.45.

To know more about car's cost here

https://brainly.com/question/25741131

#SPJ1

Answer:

The mixed number is 1 and 2/5. If it is split into 5 parts.

Step-by-step explanation:

No explanation sorry!

Answer:

Step-by-step explanation:

We already know how to represent whole numbers on the number line. Let us consider the image shown, here, the digits 0 and 1 are represented on the number line.

Representation of 0 and 1 on The Number Line

If we divide the number line into two equal parts, as shown in the figure below, what value does that mid-point hold? Half of what the graduation between 0 and 1 holds.

So, the point represents (1-0)/2 = ½

Fraction - Representation Of Fraction On The Number Line

Thus we saw, to represent a fraction on the number line, we need to divide the line segment between two whole numbers into n equal parts where n represents the denominator of the fraction. For example, if we have to represent the fraction 1/5 on the number line, hence, we need to divide the line segment between 0 and 1 into five equal parts, where the first point as shown in the figure represents the fraction 1/5, the second represents 2/5 and so on.

Fraction Representation

We must note that, 0/5 = 0 here and 5/5 = 1.

Here you have seen the representation of proper fraction on the number line. To represent improper fractions, you first convert them into mixed fractions. The same procedure, as shown above, is used with the whole number as the starting point.

Answer:

100 miles

Step-by-step explanation:

Let m be the number of miles.

[tex]100 + .30m = 50 + .80m[/tex]

[tex]100 = 50 + .50m[/tex]

[tex].50m = 50[/tex]

[tex]m = 100[/tex]

Answer:

100

Step-by-step explanation:

You can put into a graph such as desmos and see where the lines intersect. the x value of the intersection is the answer you want.

The price per pound of meat is $4.60.

Given that hamburger meat is priced at $5.98 for 1.3 pounds of meat.

It should be noted that to find the cost per pound of meat, we will need to divide the value given.

This will be:

= Cost of meat / Pound of meat

= $5.98 / 1.3

= $4.6

The price is $4.60.

Learn more about cost on:

brainly.com/question/25109150

#SPJ1