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3 years ago

6-(2-4•) how to simplify

Mathematics

1 answer:

Vera_Pavlovna [14]3 years ago

7 0

Answer:

Step-by-step explain

first parenthesis 2-4=(-2)

then 6-(-2) because its subtracting a negative u add 6+2 giving 8

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On a platter of chicken wings there are mild wings and hot wings. In a representative sample of 10 chicken wings, there are 5 m

andreyandreev [35.5K]

Answer:

3/5 is equivalent to 54/90

3 times 18 is 54

5 times 18 is 90

Hope this helps

Step-by-step explanation:

4 0

3 years ago

Solve for x. enter your answer in interval notation using grouping symbols. x^2+15x<-36

Oliga [24]

X²+15x+36<0

at first solve quadratic equation

D=b²-4ac= 225-4*1*36= 81

x=(-b+/-√D)/2a
x=(-15+/-√81)/2= (-15+/-9)/2
x1=(-15-9)/2=-12
x2=(-15+9)/2=-3

we can write x²+15x+36<0 as (x+12)(x+3)<0

(x+12)(x+3)<0 can be 2 cases, because for product to be negative one factor should be negative , and second factor should be positive
1 case) x+12<0, and x+3>0,
x<-12, and x>-3
(-∞, -12) and(-3,∞) gives empty set

or second case) x+12>0 and x+3<0
x>-12 and x<-3
(-12,∞) and (-∞,-3) they are crossing , so (-12, -3) is a solution of this inequality

3 0

4 years ago

A biologist estimated that the current population of ladybugs in the region was 8.3 x 106. He predicts that a swarm of

stiks02 [169]

Answer:

iId

Step-by-step explanation:

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3 years ago

Determine two numbers that multiply to 6 and add to 7

pogonyaev

Hey, let's figure this out together. :)

The answer is 1 and 6. Now we can prove that is true.

1 x 6 = 6

1 + (6) = 7

Thanks for using Brainly. :)

4 0

3 years ago

Read 2 more answers

Two candidates face each other in an election. The Democratic candidate is supported by 46% of the population, and the Republica

7nadin3 [17]

Answer:

27.98% probability that less than half of them (3 or fewer) would support the Republican candidate

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they support the Republican candidate, or they do not. The people are chosen at random, which means that the probability of them supporting the republican candidate is independent from other people. So we use the binomial probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

In this problem we have that:

The Republican candidate is supported by 54%. This means that $p = 0.54$

Suppose you run a poll of 8 people (randomly choose 8 people). What is the probability that less than half of them (3 or fewer) would support the Republican candidate?

This is $P(X \leq 3)$ when $n = 8$ .