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zavuch27 [327]
3 years ago
15

15 pts! Will Give Brainliest Halp! PLZ

Mathematics
2 answers:
babymother [125]3 years ago
7 0

\dfrac{-8}{2}=-8:2=-4\\\\\dfrac{6}{-3}=6:(-3)=-2\\--------------------------\\\dfrac{-8}{2}\div\dfrac{6}{-3}=-4:(-2)=2\\\\Answer:\ 2

-----------------------------

\dfrac{-}{+}=\dfrac{+}{-}=-\\\\\dfrac{+}{+}=\dfrac{-}{-}=+

aivan3 [116]3 years ago
3 0

Theres a saying: Dividing fractions dont ask why, just flip the second and multiply.

so a/b / c/d = a/b * d/c

-8/2 * -3/6

1. cross - cancel common factor 2

4/2 * -3/3

2. Multiply

-4(-3)/ 2*3

3. multiply numbers

--12/2*3

- -12/6

4. Apply fraction rule -a/b=- a/b

=-(-12/6)

5. divide

= -(-2)

6. Apply rule -(-a)=a

=2

Your answer would be 2


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ehidna [41]

Answer:

The answer for a different question is 5x

Step-by-step explanation:

DONT CHOOSE THIS. youll get wrong

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3 years ago
In a survey 70 out of 100 people supported building a new gym for KMMS. If there were 480 people that were asked if they support
ZanzabumX [31]

Answer:

336 people would say yes

Step-by-step explanation:

480 divided by 4.8 would equal 100 so 70 times 4.8 would equal 336

5 0
3 years ago
HELP BRAINLEST GUARANTEED
Liono4ka [1.6K]

Answer:

6% , 800$

Step-by-step explanation:

to answer the question we can use this proportion :

x : 100 = 30 : 500

x = (100*30)/500

x = 6%

for calculate the amount after 10 years we can use this formula

A = P(1+rt)

where P indicates the initial amount, r the rate (in decimal) and t the time of investment

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6 0
3 years ago
Find a polynomial with a degree of 3, and the zeros 1,7, & -4 with no other zeros.
jarptica [38.1K]

Answer:

f(x)=(x+4)(x-7)(x-1)

Step-by-step explanation:

zeroes are when you plug in that x value and get y=0

therefore if you set x = that number and solve for 0 you get a "function"

multiplying these together will yield the complete 3rd degree polynomial

x = 1

x-1=0

x=7

x-7=0

x=-4

x+4=0

f(x)=(x+4)(x-7)(x-1)

If needed you could expand but I'm too lazy

5 0
3 years ago
Suppose in the population, the Anger-Out score for men is two points higher than it is for women. The population variances for m
tatuchka [14]

Answer:

a)= 2

b) 6.324

c) P= 0.1217

Step-by-step explanation:

a) The mean of the sampling distribution of X`1- X`2 denoted by ux`-x` = u1-u2 is equal to the difference between population means i.e = 2 ( given in the question)

b) The standard deviation of the sampling distribution of X`1- X`2 ( standard error of X`1- X`2) denoted by σ_X`1- X`2 is given by

σ_X`1- X`2 = √σ²/n1 +σ²/n2

Var ( X`1- X`2) = Var X`1 + Var X`2 =  σ²/n1 +σ²/n2

so

σ_X`1- X`2 =√20 +20 = 6.324

if the populations are normal the sampling distribution X`1- X`2 , regardless of sample sizes , will be normal with mean u1-u2 and variance σ²/n1 +σ²/n2.

Where as Z is normally distributed with mean zero and unit variance.

If we take X`1- X`2= 0 and u1-u2= 2  and standard deviation of the sampling distribution = 6.324 then

Z= 0-2/ 6.342= -0.31625

P(-0.31625<z<0)= 0.1217

The probability would be 0.1217

8 0
2 years ago
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