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2 years ago

Please help me with question #13

Mathematics

1 answer:

lesantik [10]2 years ago

4 0

When dividing these, the powers are subtracted form each other.
We could split up the fraction into r's, s's, and t's.
r^-3 / r^2 = r^-5 [think of it as -3 -2]
s^5 / s = s^4
t^2 / t^-2 = t^4 [2 - - 2 = 4]

A negative power places it on the bottom of the fraction and the minus sign is removed from the power.
So the answer is A: (s^4)(t^4)/r^5

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What is the equation of the line that passes through (-2,2) and (1,-4)?

adelina 88 [10]

Answer:

y=-2x-2

Step-by-step explanation:

Slope: -4-2/1-(-2)=-6/3=-2

Equation: y=-2x+b

Substitute: 2=-2(-2)+b

2=4+b

b=-2

Therefore, y=-2x-2

I hope this helped and have a good rest of your day!

6 0

2 years ago

Lynette wanted to run one mile in eight minutes. To be on pace to reach

natta225 [31]

Answer:

0.25 miles

Step-by-step explanation:

assuming that she keeps a constant Velocity/ speed,

find the speed she intends to run with, ie total distance/time

$\frac{1}{8} miles \: per \: minute$

find the distance she travels in two minutes, ie speed multiplied by time.

$\frac{1}{8} \times 2 = \frac{1}{4 } = 0.25$

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2 years ago

X = 7W? + 4w - 6<br> Y =w2 - 11w +13<br> X-Y<br> Your answer should be a polynomial in standard fom.

svp [43]

Answer: $w^2-22w+19$

Step-by-step explanation:

$X=7w+4w-6\\Y=w^2-11w+13\\$

$(7w+4w-6)-(w^2-11w+13)\\7w+4w-6-w^2+11w-13\\(7w+4w+11w)+(-6-13)-w^2\\22w-19-w^2\\-w^2+22w-19$

Normally we wouldn't have our square variable be negative, so in order to get rid of that negative sign without changing the equation is by multiplying by -1

$-1(-w^2+22w-19)\\=w^2-22w+19$

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2 years ago

Select all the equations where c=9 is a solution. Choose 2 answers:

olganol [36]

question no. D and E

D.C/3=3

C=3×3

C=9

E.36=4c

36/4=c

9=c

Therefore,D=9 and E=9

4 0

2 years ago

Read 2 more answers

What can it be solved by?

Umnica [9.8K]

You can use the Grouping method to solve that polynomial

5 0

2 years ago