MATHEMATICS MIDDLE SCHOOL

Help please! this is due tomorrow so please help out! will mark as brainiest!!
AL2006 avatar

Answers

Answer 1
Answer:

Answer:

\large\boxed{\bold{Q1}\ -(128)/(9)}\n\boxed{\bold{Q2}\ 2^(25)}

Step-by-step explanation:

\bold{Q1}\n\n(-2(3^2\cdot3^3)^2)/(3^(12)\cdot2^(-6))\qquad\text{use}\ a^n\cdot a^m=a^(n+m)\n\n=-(2(3^(2+3))^2)/(3^(12)\cdot2^(-6))=-(2(3^5)^2)/(3^(12)\cdot2^(-6))\qquad\text{use}\ (a^n)^m=a^(nm)\n\n=-(2\cdot3^(5\cdot2))/(3^(12)\cdot2^(-6))=-(2\cdot3^(10))/(3^(12)\cdot2^(-6))\qquad\text{use}\ (a^n)/(a^m)=a^(n-m)\n\n=-2^(1-(-6))\cdot3^(10-12)=-2^(7)\cdot3^(-2)\qquad\text{use}\ a^(-n)=(1)/(a^n)\n\n=-2^7\cdot(1)/(3^2)=-(2^7)/(3^2)=-(128)/(9)

\bold{Q2}\n\n(4^2)/(4^(-7))\cdot(2^4\cdot2^3)\cdot(3^(-2))^0\qquad\text{use}\ (a^n)/(a^m)=a^(n-m),\ a^n\cdot a^m=a^(n+m),\ a^0=1\n\n=4^(2-(-7))\cdot2^(4+3)\cdot1=4^(9)\cdot2^7=(2^2)^(9)\cdot2^7\qquad\text{use}\ (a^n)^m=a^(nm)\n\n=2^(2\cdot9)\cdot2^7=2^(18)\cdot2^7\qquad\text{use}\ a^n\cdot a^m=a^(n+m)\n\n=2^(18+7)=2^(25)

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The sum of 4 twelve and 3 twelves

How many feet are in 4 yards

Answers

1 yard is 3 feet. you have to multiply 4 by 3. 
4×3=12
there are 12 feet in 4 yards
1 yards=3 feet
4 yards=12 feet
4*3=12
There are 12 feet in 4 yards.

Hope this helps.

Please help with 2 Math questions. I dont really understand

Answers

For the first problem, the answer is D, because every year, the graph goes down by about $4,500.
For problem two, 
a. It's located in quadrant one because x and y are both positive (I've attached a graph with labeled quadrants for reference)
I'm unsure about b and c but I hope I helped with the others!

Susan drove 571 miles and the trip took 14 hours of driving time what was her average speed for the hours that she drove

Answers

Answer:

571 miles / (14 hours) = 40.79 miles/hour

What's 5 divided by x squared explain

Answers

5 divided by x squared is a fraction.
written mathematically would look like this
5/x^2
In order for this fraction to be true, x CANNOT equal zero. If it does, the fraction is then simply equal to 0.
In any other case, x can be both negative and positive because a negative value squared will always be positive. 
For example
if x=1
5/(1)^2=5/1=5
simple.
If x=2 though, then the result is much different
5/(2)^2=5/4

Answer:

what is x

Step-by-step explanation:

Write an equation for L in point slope form L is parallel to y=5x. points (1,-1)

Answers

Answer:

y + 1 = 5(x - 1)

Step-by-step explanation:

The slope-intercept form:

y=mx+b

m - slope

b - y-intercept

Parallel lines have the same slope.

We have y = 5x → m = 5.

The point-slope form:

y-y_1=m(x-x_1)

We have the slope m = 5 and the point (1, -1). Substitute:

y-(-1)=5(x-1)\n\ny+1=5(x-1)

Answer:

y + 1 = 5(x - 1)

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

given y = 5x with slope m = 5

• Parallel lines have equal slopes

for line L with m = 5 and (a, b) = (1, - 1) then

y + 1 = 5(x - 1) ← in point- slope form

What is the answer to 5/8 . 2/7 and what does the dot stand for the dot is actually a little higher

Answers

First, the dot stands for the "product". You have to multiply.

5/8* 2/7
= [5/ (2*4)]* (2/7)
= 5/4* 1/7 (because 2 and 2 cancel out)
= (5*1)/ (4*7)
= 5/28

The final answer is 5/28~
The dot stands for multiplication
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