Mathematics Middle School

Which problem can be solved using base-10 blocks? A. Simplify x − (x + 2). B. Model the sum of 950 and 26. C. Order 2.7, 3.1, and 2.9 from greatest to least. D. Plot the points (2, 5) and (4, 9).

I need help ASAP

Answers

Answer 1
The answer is B.ejdjshsjdj

Related Questions

how wide is a rectangular strip of land with length 6 mi and area 48 square mi? find the perimeter of the rectangular strip of land.

Answers

Final answer:

The width of the rectangular strip of land is 8 miles. The perimeter of the strip is 28 miles.

Explanation:

To find the width of a rectangular strip of land with a length of 6 miles and an area of 48 square miles, we use the formula for the area of a rectangle, which is Area = length × width. Since the area and the length are given, the width can be calculated as Area / length, which is 48 square miles/6 miles = 8 miles wide.

Now, to find the perimeter of the rectangular strip of land, we use the formula Perimeter = 2(length + width). Plugging in the given length of 6 miles and the calculated width of 8 miles, the perimeter equals 2(6 miles + 8 miles) = 2 × 14 miles = 28 miles.

): How many times longer is the diameter of a grain of sand than the diameter of the average cell in the human body? Show your work.    Need help bad:(

Answers

Approximately 25. Of the 5 grades of sand used in the United states, medium sand has particles ranging from 0.25 mm to 0.5 mm. For convenience, I'll use 0.5mm as the diameter of a grain of sand. Human cells range from a volume of 30 cubic micrometers (human sperm cell) up to 4 million micrometers (human egg cell). For the average human cell, I'll use an osteoblast with a volume of 4000 cubic micrometers or a diameter of 2x10^-5 meters. Now just take the diameter of a grain of sand and divide by the diameter of a human cell. 5 x 10^-4 / 2x10^-5 = 5/2 x 10^(-4 - -5) = 2.5x10^1 = 25 So the diameter of a grain of sand at 0.5 mm is approximately 25 times larger than that of a human cell at 0.02mm

132.4 devided to te nearest tenth

Answers

Are you trying to find the nearest tenth to 132.4?

A rancher has a roll of fencing to enclose a rectangular area. The table shows how the area that the rancher can enclose with the fencing depends on the width of the rectangle.

Width (w)ft Area (A) ft2
10 900
20 1,600
30 2,100

Which quadratic equation gives the area A of the rectangle in square feet given its width in w feet?

A. A(w)= -w to the power of 2+200w
B. A(w)= -w to the power of 2+100w
C. A(w)= w to the power of 2+40w
D. A(w)= w to the power of 2+90w

Answers

10, 900
and then the second one
B
Checking for each option

Option A: [tex]A(w) = -w^2+200w[/tex]

Substitute w = 10 and check if we'd get 900 as the answer
[tex]A(10) = -(10)^2+200(10) = -100+2000 = 1900[/tex]

Option B: [tex]A(w) = -w^2+100w[/tex]
Substitute w = 10 and check if we'd get 900 as the answer
[tex]A(10)=-(10)^2+100(10)=-100+1000=900[/tex]

Option C: [tex]A(w)=w^2+40w[/tex]
Substitute  w = 10 and check if we'd get 900 as the answer
[tex]A(10) = 10^2+40(10)=100+400=500[/tex]

Option D: [tex]A(w) = w^2+90w[/tex]
Substitue w = 10 and check if we'd get 900 as the answer
[tex]A(10)=10^2+90(10) = 100+900=1000[/tex]

Answer: Option B



Can someone plz help me.
Solving Equations

Answers

For number 3 you'll add 5 to both sides and end up with the solution of a = -7
For number 4 you'll do the distribution property and get -4x-8=-40 then you'll add 8 to both sides and then divide by -4 on both sides and end up with the solution of x= 8
You start by trying to get the variable on one side. (Note:whatever you do to one side, you have to do to the other as well).
3. Add 5 on both sides, which will give you a= -7 (don't forget the negative sign)
For question 4 it's a bit different (Note: when you see a number next to a set of parentheses, that means you have to multiply the number by the parentheses AKA Distributive Property)
4. After distributing the -4, you'll get -4x-8=-40...but you're not done quite yet.
Now we have to get rid of the -8, so add 8 to each side, which will give us -4x=-32
Next divide each side by -4(because the number next to x is -4), once you do that, it'll leave you with x= 8 as your final answer.

588 = 3n Please help I don't understand this!

Answers

Simplifying
588 = 3n

Solving
588 = 3n

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-3n' to each side of the equation.
588 + -3n = 3n + -3n

Combine like terms: 3n + -3n = 0
588 + -3n = 0

Add '-588' to each side of the equation.
588 + -588 + -3n = 0 + -588

Combine like terms: 588 + -588 = 0
0 + -3n = 0 + -588
-3n = 0 + -588

Combine like terms: 0 + -588 = -588
-3n = -588

Divide each side by '-3'.
n = 196

Simplifying
n = 196
Hello!

First, let's write the problem,
[tex]588 = 3n[/tex]
Let's switch sides now, otherwise, we are going to end up doing it later.
[tex]3n=588[/tex]
Divide both sides by 3.
[tex]\frac{3n}{3}=\frac{588}{3}[/tex]
Simplify.
[tex]n=196[/tex]
That would be our final answer.

You can feel free to let me know if you have any questions regarding this!
Thanks!

- TetraFish

39 please and thanks just need answer

Answers

20,602 feet 

just subtract 20,320 - (-282)

the negative turn positive and you add the numbers
20,320-282
This is your answer

The lengths of a rectangle are 2x and x – 3. A triangle has lengths x, x – 2 and x + 4. The rectangle and triangle have the same perimeter.

Answers

Let P = the combined perimeter for the rectangle and square.

P = rectangle + triangle

P = 2(2x) + 2(x - 3) + x + x - 2 + x + 4

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

P = 9x - 8 + 4

P = 9x - 4

3.6 divided by 24 equals what?

Answers

the answer to your question is .15

The value of the expression is 3/20.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

3.6 ÷ 24

= 3.6/24

= 36/240

= 9/60

= 3/20

Thus,

The value of the expression is 3/20.

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Solve for x.
0.6x-5=0.1x+7

Answers

0.6x - 5 = 0.1x + 7

0.6x - 0.1x = 5 + 7

0.5x = 12

0.5x/0.5 = 12/0.5

x = 24

hope this helps

The solution to the equation 0.6x - 5 = 0.1x + 7 is x = 24.

To solve the equation 0.6x - 5 = 0.1x + 7 for x, we need to isolate the variable x on one side of the equation. Here's the step-by-step explanation:

Step 1: Simplify the equation

Combine like terms on both sides of the equation.

0.6x - 0.1x - 5 = 0.1x - 0.1x + 7

0.5x - 5 = 7

Step 2: Move the constant term to the other side

To isolate the variable x, we want to get rid of the constant term on the same side as x.

0.5x - 5 + 5 = 7 + 5

0.5x = 12

Step 3: Solve for x

Now, we'll solve for x by dividing both sides of the equation by the coefficient of x, which is 0.5.

(0.5x)/0.5 = 12/0.5

x = 24

So the solution to the equation 0.6x - 5 = 0.1x + 7 is x = 24.

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The record high January temperature in Austin,Texas is 90F the record low January temperature is -2 F find the differences between the high and low temperature

Answers

The difference is subtraction, so we do 90-(-2)=90+2=92. If you subtract a negative number, you simply add that number
90-4=96 
the difference s 96 degrees

What is 68127000000000000 in scientific notation

Answers

68127000000000000 in scientific notation is:

6.8127 *10^16

68127000000000000 can be written in scientific notation as 6.8127 × 10¹⁶

What is Scientific Notation?

Scientific Notation is a method used in mathematics to express large numbers in standard form so that they will be easier to calculate.

This standard form is written in decimal form multiplied by the power of the corresponding values after the first digit.

From the given information;

68127000000000000 can be written in scientific notation as:

= 6.8127 × 10¹⁶

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Which input value produces the same output value for the two functions on the graph?
a)-1
b)0
c)3
d)4

Answers

According to the graph, at x = 4 the graphs of the two functions intersect, meaning that the two functions have the same output value (which is 3).

Answer:

Step-by-step explanation:

D) x=4

What is the solution to the inequality 2(x + 3) ≥ –10 – 4x? solve step by step, please.

Answers

2(x + 3) > = -10 - 4x...distribute thru the parenthesis
2x + 6 > = -10 - 4x ....add 4x to both sides
2x + 4x + 6 > = -10 - 4x + 4x...simplify
6x + 6 > = -10 ...subtract 6 from both sides
6x + 6 - 6 > = -10 - 6...simplify
6x > = -16...divide both sides by 6
(6/6)x = -16/6
x = - 8/3 <==

calculate the distance between (0,3) and (3,10) to 1 decimal place

Answers

Alright, so the distance formula is sqrt((x1-x2)^2+(y1-y2)^2), and plugging that in, we get sqrt((0-3)^2+(3-10)^2)=sqrt((-3)^2+(-7)^2)=sqrt(9+49)=sqrt(58)=around 7.6

Create and solve equations, showing your work. You must create the equations and show the steps required to solve them.

Your portfolio must include a minimum of the following types of equations:

One one-step equation
One equation that contains fractions
One equation with decimals
One real-world problem that is solved by an equation

Answers

One step equation, where only one step is required to solve the problem. Example:
20 = 5x
4 = x

Fractions:
1/2 + x = 3/2
x = 3/2 - 1/2
x = 1

Decimals:
0.5 + x = 1.5
x = 1.5 - 0.5
x = 1

Real world problem: (word problem and equation)
It costs $5 per hour to rent a canoe plus a $3 rental fee. How much will the total be if you plan on renting the canoe for 3 hours?
y = 5x + 3
y = total cost ; x = number of hours rented
y = 5×3 + 3
y = 15 + 3
y = $18

One-step equation is 4y=64, equation contains fractions is 3x=24/5, equation with decimals is 9x+0.3=17.7 and equation for real world problem is y=1x+2.

What is the equation of variable?

The variable is the unknown part of the equation. Variable changes with change in the quantities for any situation.

One one-step equation

The one step-equation is written below.

[tex]4y=64[/tex]

Divide both side with 4,

[tex]y=16[/tex]

The equation is solved in one-step.

One equation that contains fractions.

The following equation is the equation which contains the fraction,

[tex]3x=\dfrac{24}{5}[/tex]

Divide both side with number 3,

[tex]x=\dfrac{24}{5\times3}\\x=\dfrac{8}{5}[/tex]

One equation with decimals-

The following equation is the equation which contains the decimals,

[tex]9x+0.3=17.7[/tex]

Subtract both side with decimal number 0.3,

[tex]9x+0.3=17.7\\9x=17.7-0.3\\9x=18[/tex]

Divide both side with number 9,

[tex]x=2[/tex]

One real-world problem that is solved by an equation

A taxi driver charge $1 for the a mile of a taxi ride and one time booking charge $2. The equation for this is given as,

[tex]y=1x+2[/tex]

Here in the variable (y) represent the total charge of taxi and variable (x) represent the number of rides the taxi travelled.

Thus, the one-step equation is 4y=64, equation contains fractions is 3x=24/5, equation with decimals is 9x+0.3=17.7 and equation for real world problem is y=1x+2.

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What is -1.1 repeating as a fraction

Answers


[tex]Hey \\ There! [/tex]

[tex] \frac{-1.1}{1} ( \frac{10}{10} )\\ \\ -1.1(10) = -11 \\ \\ 1(10)= 10 \\ \\ \\ Fraction: \frac{-11}{10} [/tex] this is also [tex]equal [/tex] to: [tex] -1\frac{1}{10} [/tex]

Your answer would probably be: [tex] \frac{-11}{10} = -1\frac{1}{10} [/tex]

Good luck on your assignment and enjoy your day! 

~[tex]MeIsKaitlyn:)[/tex]

How do I turn 1/9 into a decimal?

Answers

To convert the fraction to a decimal by dividing the numerator by the denominator. 

0.1111111111.... Will be your answer. Make sure you put a line over the 1's to signify the repetition. 
Work: You can divide 1 by 9
0 .1
_____
9/ 1 0
9
_____
1
.11 repeating

PLEASE HELP ME FAST!!!!!!!
who do i write the number 0.23333333333... repeating as a fraction?

Answers

it is 23/100 just say it and then write it
23/33333 it think I could be wrong

The area, a, of a trapezoid is calculated using the formula A= 1\2(b+c)h, where h is the height of the trapezoid and b and c are the base of the trapezoid. Rearrange the formula to solve for h

Answers

The answer is: h= (2A)/(b+c)
Final answer:

To rearrange the formula for the area of a trapezoid to solve for the height, divide both sides of the equation by (b+c)/2. The rearranged formula is h = 2A/(b+c).

Explanation:

The formula for the area of a trapezoid is given by A= 1/2(b+c)h, where A is the area, h is the height, and b and c are the lengths of the two bases. To rearrange this formula to solve for h (the height), you need to isolate h on one side of the equation. The rearranged formula would look as follows: h = 2A/(b+c).

To obtain this, we divided both sides of the equation by (b+c)/2. This gives us a new formula to find the height of the trapezoid given the area and the lengths of the two bases.

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2(r-3)/4=50 Please help i am very confused

Answers

[tex] \frac{2(r-3)}{4} - 8 = 50[/tex]

Add 8 to both sides.

[tex]\frac{2(r-3)}{4} = 50 + 8
 
Simplify. 

[tex] \frac{2(r-3)}{4} = 58[/tex]

Then, multiply both sides by 4.

[tex]4 * \frac{2(r-3)}{4} = 58 * 4[/tex]

Simplify.

2(r - 3) = 232

Simplify.

2r - 6 = 232

Add 6 to both sides.

2r = 232 + 6

Simplify.

2r = 238

Divide both sides by 2.

r = 119

~Hope I helped!~

Angela ordered 2 glass paperweights. The volume of each paperweight is 5 cubic inches, and the density of the glass is 1.5 ounces per cubic inch. Angela can use the calculation below to find the total weight of her order.

2×(5×1.5)

How can Angela simplify the calculation using only the associative property of multiplication?

Answers

The associative property states that you can multiply numbers no matter how they're grouped, meaning that we can erase the parenthesis and make it 2*5*1.5. That way, it's easier to figure out 2*5*1.5 than 5*1.5 first then that multiplied by 2. 

Answer:

(2 times 5) then times 1.5

Step-by-step explanation:

i took K12 test

south high school has 85 students more than North High School. The total number for both schools is 1495. How many students are at South High School?

Answers

790 students I subtracted 1495-85 then divided that by two then added the 85 to 705 to get 790

How many ways are there to put 4 balls in 3 boxes if the balls are distinguishable and the boxes are distinguishable?

Answers

13 would be the correct answer
13 is the answer. hope it helped my guy

Write each product using an exponent. 10x10=

Answers

Answer: 100

Step-by-step explanation:10x10=100

Find two numbers whose LCM is 90

Answers

To find the LCM for 90 since it has a zero, the first LCM is going to be 10. And 10 multiplied by 9 is 90. You can also divide the 90 by 5 and get 18.
One way working this out is to find all the numbers that go into 90 by listing all the pairs of numbers that multiply to give 90

1 × 90
2 × 45
3 × 30
6 × 15
9 × 10

From here we can do trial and error:

Let's choose any two factors, say 2 and 3
By listing their multiples, we will find their LCM is 6, not 90

Then choose any two factors, say 3 and 6
By listing their multiples, we will find their LCM is 6, not 90

We can try some bigger number, say 45 and 90
by listing their multiples, we will find their LCM 90

Answer: 45 and 90


A. Sin40=6/x
B. Sin40= x/6
C. Cos40= x/6
D. Cos40=6/x

Answers

the answer is A. sin40=6/x

What is 372 divided by 2

Answers

372 / 2 = 186 <=======
the answer to your question is 186

What is 43.78 in word form

Answers

forty three. seven eight
Forty-three. Seventy-eight will be the correct answer. Have A Great Day

If a square with a side of six is cut into three congruent rectangles, what is the perimeter of one of those rectangles

Answers

16 should be the correct answer
First of all, it is hard to know how to do this problem if you do not understand all the terms being used.

Square= a shape with four sides of equal length that meet to form four right angles.
Congruent rectangles = rectangles that are exactly the same in size and shape.
Perimeter = in this case, it is the sum of all the sides of the rectangle

The question asks you to divide a square with sides that are 6 units long into 3 congruent rectangles. 
If it is hard to picture this in your head, I recommend that you draw a picture. I drew one for you so you can see how mine looks. In the picture, you can see I cut one side of the square into 3 equal pieces. So, we divide the total side length by the number of equal divisions to get the heights of the rectangles. I got height (h)= 2 units. To find the width of the rectangles, you can merely use the length of a side of the square. So, the width(w)=6 units. So, then to get the perimeter of a rectangle you add up all the sides. Perimeter= h+h+w+w= 2+2+6+6= 16 units. I got rectangle perimeter=16 units for my final answer. Hope this helped! Comment on this answer if you still have any questions or you think I messed up. :)
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