MATHEMATICS MIDDLE SCHOOL

Write an inequality to compare Monday's temperature to Tuesday's. Monday: -1
Tuesday: -10

Answers

Answer 1
Answer: heres two; -1>-10 or -10<-1

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Twice the difference of a number and 5 is equal to three times the sum of the number and 5. Find the number
72ouces 6 steaks equals what

Just number 18 please

Answers

Answer:

Please put the answer horizontal how it is makes my head hurt

Step-by-step explanation:

Factor completely: 3x^2 – 21x + 30A. 3(x – 2)(x – 5)
B. (3x – 2)(x – 15)
C. 2(x – 3)(x – 10)
D. (x – 2)(x – 5)

Answers

The answer is going to be A.

You first factor 3 out getting x^2-7x+10

Then you factor that so (x-2)(x-5)  then tack that 3 onto the end so 3(x-2)(x-5)
a because 3(x^2-7x+10)
3(x-2)(x-5) 

Find the surface area of a triangular prism with the dimensions of 14 16 and 18

Answers

To find the height of the triangle we can use pythagorean theorem or a squared to b squared  = c squared with c as the hypotenuse.

14 squared + height squared = 16 squared
196 + height squared = 256
height squared = 60
height = 2√(15)

The formula for surface area or total area is:
perimeter x height + 2 x area of base
30 + 2√(15) + 28√(15)
30 + 30√(15) = final answer

Hopes it helps!

Approximately 2 percent of the people in the world have red hair. There are about 7,000,000,000 people in the world.About how many people have red hair?

Answers

Change 2% to a decimal .02 times 7000000000 = 140,000,000
140,000,000 …you know you could just look this stuff up…

Write the equation of the line that it is parallel to y=2x+1 and passes though the solution of the following systems of equations :3x-2y=10
x+y=5

Answers

The required equation of a line is y = 2x - 11

What is the slope of the line?

The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.


Here,
The given line,
y = 2x + 1
The slope of the equation is m = 2

Now the point is  required,
3x-2y=10  - - - - - -(1)

x+y=5  
x = 5 - y - - - - -(2)
putting x in equation 1
3(5 - y) - 2y = 10
15 - 3y - 2y = 10
-5y = -5
y = 1
Now
x = 5 - y
x = 5 + 1
x = 6
Points are (6, 1)
Equation of line is given by,
y - 1 = m (x - 6 )
y - 1 = 2 (x - 6 )
y = 2x -12 + 1
y = 2x - 11

Thus, the required equation of line is y = 2x - 11

Learn more about slopes here:
brainly.com/question/3605446

#SPJ2

well, keeping in mind that parallel lines have the same exact slope, hmmmmm

\bf y = \stackrel{\stackrel{m}{\downarrow }}{2}x+1\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\n \cline{1-1} \n y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \n\n \cline{1-1} \end{array}

alrite, so we know the slope has to be 2 then hmmm let's check the point it runs through

\bf \begin{cases} 3x-2y=&10\n\n x+y=&5\n \qquad y=&5-x \end{cases} \n\n\n \stackrel{\textit{substituting \underline{y} on the 1st equation}}{3x-2(5-x)=10}\implies 3x-10+2x=10\implies 5x-10=10 \n\n\n 5x=20\implies x=\cfrac{20}{5}\implies \blacktriangleright x = 4 \blacktriangleleft \n\n\n \stackrel{\textit{since we know that}}{y = 5-x}\implies y=5-4\implies \blacktriangleright y = 1 \blacktriangleleft

so, we're really looking for the equation of a line whose slope is 2 and runs through (4,1)

\bf (\stackrel{x_1}{4}~,~\stackrel{y_1}{1})~\hspace{10em} \stackrel{slope}{m}\implies 2 \n\n\n \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\n \cline{1-1} \n y-y_1=m(x-x_1) \n\n \cline{1-1} \end{array}\implies y-\stackrel{y_1}{1}=\stackrel{m}{2}(x-\stackrel{x_1}{4}) \n\n\n y-1=2x-8\implies y=2x-7

A radio station requires DJs to play 2 commercials for every 10 songs they play.What is the unit rate of songs to commercial?

Answers

The correct answer for this question is that the unit rate is 5:1. Wecan work this out by simplifying down the 2 commercials to every 10songs ration, so that 10:2 becomes 5:1. We can work this out by halvingthe original ratio to simplify it.
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