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3 years ago

My friend and I are confused.

Mathematics

1 answer:

Irina-Kira [14]3 years ago

7 0

since the base of the bigger triangle and the base of the smaller triangle are parallel
therefore the two triangle are similar
this means that 10/24=x/3x-3
30x-30=24x "using cross multiplication"
30x-24x=30
6x=30
X=30/6=5

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You earn $50 per day for babysitting plus $0.75 per mile that she has to drive for an equation to represent the situation and de

tatuchka [14]

50 + (.75 x d)

D = distance traveled by in miles

8 0

3 years ago

When the Bucks play Chiefs at football, the probability that the Chiefs, on present form, will win is 0.56. In a competition, th

Tom [10]

Answer:

The probability that Swallows will win the trophy is 0.8064

The probability that Rucks will win the trophy is 0.1936

Step-by-step explanation:

For each game, there are only two possible outcomes. Either the Swallows win, or they do not. The probability of them winning a game is independent of any other game, which means that the binomial probability distribution is used.

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.

Probability the Swallows wins is 0.56

This means that $p = 0.56$

2 games:

This means that $n = 2$

The probability that Swallows will win the trophy is

Probability they win at least one game, so:

$P(X \geq 1) = 1 - P(X = 0)$

In which

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

$P(X = 0) = C_{2,0}.(0.56)^{0}.(0.44)^{2} = 0.1936$

Then

$P(X \geq 1) = 1 - 0.1936 = 0.8064$

0.8064 = 80.64% probability the Swallows win the trophy and 0.1936 probability that the Rucks win the trophy.

5 0

3 years ago

Which expression is equivalent to 2x2 – 2x + 7?

Blizzard [7]

4-2x+7 maybe
Or try making the expression shorter like I did

4 0

3 years ago

Read 2 more answers

Plz answer this for x

nirvana33 [79]

HEY THERE !!

AS WE KNOW A HEXAGON'S ALL ANGLES ARE 720°

SO HERE X = 720° - all rest angle's add

or 160+75+132+113+108= 588
x = 720 - 588
x = 132 °

HOPE IT HELPED YOU

4 0

4 years ago

In geometry, Heron's formula (sometimes called Hero's formula), named after Hero of Alexandria, gives the area of a triangle by

uysha [10]

Answer:

C) $6.495\: ft^2$