Mathematics Middle School

-0.4n is less than or equal to 6.8

Answers

Answer 1
ok umm of course its less has the school system failed you
Answer 2
it is less than that is the answer

Related Questions

I am the largest 7-digit number you can write with the digits 3, 6, 9, 4, 0, 8, and 2

Answers

9,864,320

Hope this helps, let me know if there's anything else I can help you with :)
i believe it is 9,864,320

72 is 48% of what number

Answers

72/1 x 48/100
= 18/1 x 48/25
= 864/25
= 34 14/25

The number for which 72 is 48 percent of is approximately equal to 150.

To find the number that corresponds to 72 being 48% of it,  set up an equation.

Let "x" represent the unknown number.

The equation for "72 is 48% of x" can be written as:

72 = 0.48 × x

To solve for "x," divide both sides of the equation by 0.48:

x = 72 / 0.48

x ≈ 150

Therefore, 72 is 48 percent of approximately 150.

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An electronics manufacturer has 180 capacitors, and the same number of capacitors is needed for each circuit board made. The manufacturer uses the capacitors to make 45 circuit boards

Answers

They used 4 capacitors per circuit board, if that's what you are asking....
180/4=45

How do you solve this using the elimination method of systems of equations?

Answers

x-2y=14      | *-1
x+3y=9

-x+2y=-14  } +
x+3y=9
---------------
   5y=-14+9
   5y=-5
   y=-5/5
     y=-1

x+ 3*(-1)=9
x-3=9
x=9+3
x=12
Since you want to eliminate in the variable, eliminate x because it can be easily crossed out. To get rid of x simply subtract the two equations. So x-x is canceled and 2y- -3y=5y and 14-9=5 so 5y=5 is 1. Now plug 1 into y and you get x=6.
The answer is (6,1) Hope this helps!!!!!!

Expand (4x + 1)(x - 3) what is the answer

Answers

Im pretty  sure that the answer to your problem would be
4x^2-11x-3
(4x+1)(x-3) disturb 4x*x=4x^2 4x*3=12x 1*x=1x 1*-3=-3 rewrite
4x^4+12x-3 is ur answer
Hope this helps have a nice day

The sum of three integers is 74. The first integer is twice the second and the third is six more than the second. What are the three integers

Answers

let thw second integer be x
then the first = 2x
and the third integer is = 6+x
their sum = 74
x+2x+6+x = 74
4x +6 = 74
4x = 74-6 =68
x =68÷4
x = 17
then the first integer is 2×17 = 34
the third integer is 17+6 = 23

the integers are 17 , 23 and 34

Explain in your own words that CPCTC means in Geometry AND when it is used?

Answers

CPCTC?
Corresponding parts of congruent triangles are congruent

When?
Used when you want to prove that 2 sides, angles, or triangles are the same.

Find the measure of the numbered angles

Answers

Well...
Some information was cut off but I'll assume that its a parallelogram.
If it's a parallelogram, then angles 1 and 3 are equal and angle 2 and the angle marked as 110 degrees are equal.
Next we know that angles 1 and 2 are supplementary(adds to 180) so angle 1 is 70 degrees.
Because angle 3 is equal to angle 1, angle 3 is also 70 degrees.
Hope this helps :)

What is the Math pattern for 4,25,130,655

Answers

It has a pattern of first multiplying by 4 then add 5 to the product and then add the total to the number and so on.

 4*4=16, 16+5=21, 21+4=25

25*4=100, 100+5=105, 105+25=130

130*4=520, 520+5=525, 525+130=655

Kirk has 12 dollars less than jim if Jim spends half of his money and Kirk spends none then Kirk will have two dollars more than jim how much money did they both start with

Answers

kirk started with 16 and Jim started with 28 

How can I solve this?
f(x) =
[tex] {10}^{x} [/tex]
Solve,
[tex] {f}^{ - 1} (1)[/tex]

.



Answers

Here you are
Merry Christmas

Which function represents the graph of y=10(4)x ?



f

g

h

j

Answers

g would be the correct answer

Simplify.     -(2/3)(-9y)(3/2)(8x)(1) A. 72xy   B. –72xy   C. 72   D. 0

Answers

Your answer would be 72xy
Hope this helps...........

Tara makes 30 cups of donut topping by mixing sugar and cinnamon. The ratio of sugar to cinnamon is shown in the tape diagram.

Answers

18 What i did was i divided 5 into 30 which equals 6 then i added 6+6+6=18 that should be your anwser

Answer: 18 cups.


Step-by-step explanation:

From the given picture we can see

The ration of sugar to cinnamon in the donuts topping =[tex]\frac{\text{no. of blue box }}{\text{no. of green box}}=\frac{3}{2}=3:2[/tex]

Thus, the number of sugar cups to make 1 donuts topping=[tex]\frac{3}{3+2}=\frac{3}{5}[/tex]

The number of sugar cups to make 30 cups of donuts toppings[tex]\frac{3}{5}\times30[/tex]

[tex]=3\times6\\=18\ cups[/tex]

The number of cups required to make 30 cups of donuts toppings=18 cups



Convert $8.25 per hour to dollars per year , with work

Answers

8.25*40= $330 a week

330*12= $3960 a year

If x = 3 calculate the value of x2+x

Answers

If x = 3 calculate the value of x^2+x
3^2 +3
= 9 + 3
= 12
The X just represents what the value will be in the equation, in this case 3, and when you have the letter besides a number, you just multiply them together:
x2+x = (2*3)+3 = 9

The answer is 9,
Hope this helps! :)

What is the solution to this equation? 3(d+2)−12=d−2 A)d = 2 B)d = 4 C)d = 8 D)d = 10

Answers

The answer s a)d=2.

Answer: d = 2

Step-by-step explanation:

3(d+2)−12=d−2

One tank is filling at a rate of 5/8 gallon per 7/10 hour. A second tank is filling at a rate of 5/9 gallon per 2/3 hour. Which tank is filling faster? Explain how you know.

Answers

First recognize that the unit rate we're finding is gallons per hour, or [tex]\frac{g}{h}[/tex].

rate for Tank 1 = x gallons per hour = a gallons / b hours

[tex]T_{1}=\frac{\frac{5}{8}}{\frac{7}{10}}\\\\T_{1}=\frac{5}{8}*\frac{10}{7}\\\\T_{1}=\frac{50}{56}\\\\\\Fill\ rate\ of\ Tank\ 1=\frac{25}{28}[/tex]


rate for Tank 2 = y gallons per hour = c gallons / d hours

[tex]T_{2}=\frac{\frac{5}{9}}{\frac{2}{3}}\\\\T_{2}=\frac{5}{9}*\frac{3}{2}\\\\T_{2}=\frac{15}{18}\\\\T_{2}=\frac{15}{18}\\\\\\Fill\ rate\ of\ Tank\ 2=\frac{5}{6}[/tex]

The heights of four boys measured 152.0 cm, 150.75 cm, 149.5 cm, and 149.25 cm. Bradley is the tallest, Calvin is taller than josh, but shorter than Mark. Josh is the shortest. What is Mark's height


Answers

So, Bradley is the tallest! He's 152.0 cm, then. Josh is the shortest, so he's 149.25 cm:
Bradley: 152.0 cm
???: 150.75 cm
???: 149.5 cm
Josh: 149.25 cm
Then, Calvin is taller than Josh, but he's shorter than Mark. There's only 2 spaces available left, so Calvin is 149.5 cm, and now there's only one slot left, and that means Mark is 150.75 cm.
So: 
Bradley: 152.0 cm
Mark: 150.75 cm
Calvin: 149.5 cm
Josh: 149.25 cm
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how would I solve 4 1/19 × 1 10/21 ?

Answers

First put them into improper fractions which are 77/19 and 31/21, then multiply 77 and 31 and get 2387, and multiply the denominators 19 and 21 which is 399. Then u can put it into a simplified fraction of u wnat
The answer is 5 [tex] \frac{56}{57} [/tex]. 1.)Transform the  mixed numbers into proper fractions. 4 [tex] \frac{1}{19} [/tex] = 19x4 = 76+1=77=[tex] \frac{77}{19} [/tex]. 1 [tex] \frac{10}{21} [/tex] = 21x1=21+10=31= [tex] \frac{31}{21} [/tex].
2.) Multiplying two fractions. [tex] \frac{77}{19} [/tex] x [tex] \frac{31}{21} [/tex]=[tex] \frac{2387}{399} [/tex]. 3.) Simplifying a fraction. [tex] \frac{2387}{399} [/tex] = [tex] \frac{341}{57} [/tex]. 4.) Since the numerator greater then the denominator, convert the improper fraction to mixed number. [tex] \frac{341}{57} [/tex] = 56+5x57/57 = 5 [tex] \frac{56}{57} [/tex]

18 out of the 25 students are going on the field trip. What percent of the students are going on the field trip?


can you provide the math to please

Answers

Hello.
To find the percentage of how many students went on the field trip, we simply divide 18 by 25. 
18/25 = 0.72

Convert decimal into fraction.
0.72 = 72%

Thus, 18 out of 25 students = 72% of students who are going on the field trip.

You're welcome.

Mckenzie and Cara both tried to find the missing side of the right triangle. Is either of them correct? Explain your reasoning.

Answers

Since it is a right triangle, we can use the pythagorean theorem:

a^2+b^2=c^2

5^2 + 13^2 = c^2

25 + 169 = c^2

194 = c^2

c = sqrt(194)

The baker used 3 1/2 cups of pastry flour for every 1 1/2 cups of wheat flour. How many pastry flour is used per cup of west flour?

Answers

3 because there’s 3 1/2 cups for 1 1/2
Final answer:

The baker used 2 1/3 cups of pastry flour per cup of wheat flour.

Explanation:

To find out how many cups of pastry flour are used per cup of wheat flour, we can set up a proportion based on the given information:



3 1/2 cups pastry flour / 1 1/2 cups wheat flour = x cups pastry flour / 1 cup wheat flour



We can solve for x by cross-multiplying:



(3 1/2)(1) = (1 1/2)(x)



7/2 = 3/2x



Now we can solve for x by dividing both sides of the equation by 3/2:



(7/2) ÷ (3/2) = x



7 ÷ 3 = x



x = 2 1/3



Therefore, the baker used 2 1/3 cups of pastry flour per cup of wheat flour.

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Can anyone explain this to me?

Answers

Yes, because of the Angle Angle Similarity Property.  Angle U in the larger triangle measures 55 degrees.  Angle X of the smaller triangle is unknown, but in the polygon formed by the smaller triangle inside the larger, X is equal to 125. Since both values of X form a straight line, they must add up to 180.  So subtract 125 from 180 and you get 55.  This would prove that at least one angle is equal, and then if you look at the top angles of the triangle, they both have Angle U, so they must also be equal.  The third choice is correct.

On a string of red and blue lights, the red lights blink everyb3 seconds, and the blue lights blink every 5 seconds. How many times will they blink at the same time in one minute?

Answers

when will they blink together?
what is the smallest number they both mutiply to
3*5=15
so every 15 seconds
so at 15, 30, 45, 60 seconds
so 4 times if you count the time exactly at 1 minute
Final answer:

The red and blue lights will blink at the same time 4 times in one minute.

Explanation:

To determine how many times the red and blue lights will blink at the same time in one minute, we need to find the time at which both the 3-second cycle of the red light and the 5-second cycle of the blue light coincide. This is equivalent to finding the least common multiple (LCM) of 3 and 5. The LCM of 3 and 5 is 15, which means they will blink at the same time every 15 seconds.

Since there are 60 seconds in a minute, we need to find how many times 15 seconds fit into 60 seconds. 60 ÷ 15 = 4. Therefore, the red and blue lights will blink at the same time 4 times in one minute.

Answer: The red and blue lights will blink at the same time 4 times in one minute.

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Find the possible values of n in the inequality -3n<81

A. n<27

B. n>-27

C. n=-27

D. n=27

Answers

-3n < 81...divide both sides by -3, and change the inequality sign
n > -81/3
n > - 27 <==

** in an inequality, if u divide/multiply by a negative number, u have to change the inequality sign

Valerie and Bret have a total of 24 dog show ribbons.bret has twice as many ribbons as Valerie how many ribbons does each have

Answers

Bret has 16 ribbons and Valery has 8

13x = 32 + 5x this one is solving the equation and checking the solution

Answers

x = 4, You subtract the 5x to the other side then divide the 32 by 8 to get 4.
solution:
13x=32+5x
13x-5x=32
8x/8=32/8
x=4
check:
13(4)=32+5(4)
52=32+20
52=52 right!



Suppose 8 out of 20 students are absent from school less than five days a year. Predict how many students would be absent from school less than five days a year out of 40,000 students

Answers

40,000 x 8 divided by 20 = 16,000 absent students.

the universal set is represented in a venn diagram by

Answers

What universal set? Can you please be more clear?
I believe the answer is a rectangle, but I'm not sure.
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