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3 years ago

Which is used to solve systems of equations?

Mathematics

1 answer:

pantera1 [17]3 years ago

8 0

Step-by-step explanation:

The three methods most commonly used to solve systems of equations are substitution , and augmented matrices.

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I need help on all r questions I answered right

yaroslaw [1]

Show the problems my guy

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4 years ago

1)When adding two negative numbers, _________ the absolute value of the numbers and keep the negative sign.

butalik [34]

1) add.

for example -1 + -2 = - (||-1| + |-2||), which is -(1+2) or -3

2) subtract

for example 4 + -7 = -(||-7| + |4||), which is - |7 - 4| or -3

3) change
for example 3 - (- 2) = 3 + 2

4) -10

the sum is -10.25, which is closest to -10

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3 years ago

Read 2 more answers

Three times a number decreased by 5 equals 10. Write the equation and find the number.

damaskus [11]

Answer:

3x - 5 = 10

Step-by-step explanation:

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3 years ago

Dessie is training for a triathlon she runs 4 miles for every 9 miles she bikes at the end of her training she has run a total o

gayaneshka [121]

Step-by-step explanation:

Dessie has biked and run a total of 299 miles

6 0

3 years ago

USA Today reports that about 25% of all prison parolees become repeat offenders. Alice is a social worker whose job is to counse

MissTica

Answer:

P(x = 0) = 0.004

P(x = 0) = 0.047

P(x = 0) = 0.211

P(x = 0) = 0.422

P(x = 0) = 0.316

Step-by-step explanation:

We are given the following information:

We treat a person who does not become a repeat offender as a success.

P(Success) = P(person who does not become a repeat offender) = 0.75

Then the number of people follows a binomial distribution, where

$P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}$

where n is the total number of observations, x is the number of success, p is the probability of success.

Now, we are given n = 4

We have to evaluate:

$P(x = 0)\\= \binom{4}{0}(0.75)^0(1-0.75)^4 = 0.004$

$P(x = 1)\\= \binom{4}{1}(0.75)^1(1-0.75)^3 = 0.047$

$P(x = 2)\\= \binom{4}{2}(0.75)^2(1-0.75)^2 = 0.211$

$P(x = 3)\\= \binom{4}{3}(0.75)^3(1-0.75)^1 = 0.422$

$P(x = 4)\\= \binom{4}{4}(0.75)^4(1-0.75)^0 = 0.316$

8 0

4 years ago