MATHEMATICS MIDDLE SCHOOL

For which of the following possible values of n will the expression the smallest value? (5n)/4 have the smallest value?A. -8
B. -4
C. 4
D. 8

Answers

Answer 1
Answer:

Answer:

a

Step-by-step explanation:
Answer 2
Answer:

Answer:

-8

Step-by-step explanation:

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What can be added to -1 so it can be a positive 1?

Answers

so represent missing number with x
x means unknown so
x+-1=+1
adding a negative means subtraction
x-1=1
you can do anything to an equation as long as you do it to both sides
add 1 to both sides
x+1-1=1+1
x+0=2
x=2

the number is 2

Find the axis of symmetry and the vertex of the graph of f(x) = -5x^2 +20x -9.

Answers

Answer:

Axis of Symmetry:

x=2

Vertex:

(2,11)

Step-by-step explanation:

Finding the derivative:

f'(x)=-10x+20

Setting the slope equal to zero:

-10x+20=0      x-2=0    x=2

Finding vertex:

f(2)=-5*(2)^2+20*2-9

=-20+40-9=20-9=11

(2,11)

Solve x-7.6+9.4= -8.4

Answers

x - 7.6 + 9.4 = -8.4

First, simplify to x + 1.8
Your problem should look like: x + 1.8 = -8.4
Second, subtract 1.8 from both sides. 
Your problem should look like: x = -8.4 - 1.8
Third, simplify.
Your problem should look like: x = -10.2

Answer: x = -10.2

Please help don't know how to do

Answers

Area of a triangle is (basexheight)/2

That's what your Formula, then you have to plug in the numbers

so the algebraric expression is (5xn)/2

For then end if you look at the patteren for the height it goes by 2. So the last height would be 10.
Plug that into the equation, which would be (5x10)/2=25

Anzelm wants to burn 540 calories while jogging. Jogging burns about 12 calories per minute. When Anzelm goes jogging, he usually plans to stop and rest for about 5 minutes.

Answers

Answer:he will use 45 minutes to burn 540 calories . he spend a total of 50 minutes ie including 5 minutes of rest.

Step-by-step explanation: 1 minute burns 12 calories

Therefore 540÷12 = 45 minutes plus 5 minutes of rest = 50 minutes.

Use the work shown below to write the equation for a line that has a slope of and passes through (15, –2). y = mx + b What is the equation of the line in slope-intercept form?

Answers

Answer:

D

Step-by-step explanation:

y = -2/5x+4

Hope I helped all you have to do is subsitute the values for m and b!

Answer:

y = -2

Step-by-step explanation:

You would use the Point-SlopeFormulasince we are given a point:

y - y₁ = m(x - x₁)

y + 2 = 0

y = -2

Because there was no rateofchange[slope] given, it was automatically assumed to be a zero slope, which is a horizontal line.

I am joyous to assist you anytime.
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