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3 years ago

PLEASE HELP!!! CHOOSE THE SOLUTION TO FOLLOWING INEQUALITY (in picture)

Mathematics

1 answer:

Helga [31]3 years ago

6 0

Answer:

the last one is the answer of it

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The perimeter of a rectangular field is 354 yards. If the width of the field is 78 yards, what is its length?

ankoles [38]

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Step-by-step explanation:

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3 years ago

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Solve for x. x + 1/2 = 3/4

Burka [1]

Answer:

x=1/4

Step-by-step explanation:

you would take a away 1/2 from each side so it would look like this

x+1/2=3/4

-1/2 -1/2

x=3/4-1/2

and 3/4-1/2 is 3/4-2/4=1/4

x=1/4

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3 years ago

Question 1 of 10

Naddika [18.5K]

Answer:

B. 6x2+x+7

Step-by-step explanation:

combine like terms

3x^2+3x^2= 6x^2

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3+4=7

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3 years ago

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A baseball player has a batting average of 0.25. What is the probability that he has exactly 2 hits in his next 7 at bats

marissa [1.9K]

Answer:

The probability that he has exactly 2 hits in his next 7 at-bats is 0.3115.

Step-by-step explanation:

We are given that a baseball player has a batting average of 0.25 and we have to find the probability that he has exactly 2 hits in his next 7 at-bats.

Let X = Number of hits made by a baseball player

The above situation can be represented through binomial distribution;

$P(X = r) = \binom{n}{r}\times p^{r} \times (1-p)^{n-r}; x = 0,1,2,......$

where, n = number of trials (samples) taken = 7 at-bats

r = number of success = exactly 2 hits

p = probability of success which in our question is batting average

of a baseball player, i.e; p = 0.25

SO, X ~ Binom(n = 7, p = 0.25)

Now, the probability that he has exactly 2 hits in his next 7 at-bats is given by = P(X = 2)

P(X = 2) = $\binom{7}{2}\times 0.25^{2} \times (1-0.25)^{7-2}$

= $21 \times 0.25^{2} \times 0.75^{5}$

= 0.3115

5 0

4 years ago

A scientist determines that the number of bacteria in a culture is modeled by the formula A(t)=4,000e0.02t, where t is the numbe

SpyIntel [72]

Using the exponential model given, the number of bacteria in the culture after 9 minutes after the observation began will be 4789

Given the exponential model :

$A(t) = 4000e^{0.02t}$
$A(t) = Number\:bacteria\:in\:the\:culture\:after\:t\:minutes$
t = number of minutes after observation begins

The number of bacteria in the culture 9 minutes after the observation began can be calculated thus :

$t = 9 \: minutes$

Substitute 9 for t in the exponential equation :

$A(t) = 4000e^{0.02\times9}$

$A(t) = 4000e^{0.18}$

$A(t) = 4000 \times 1.1972173$

$A(t) = 4788.87$

Therefore, the number of bacteria in the culture after 9 minutes will be about 4789

Learn more :brainly.com/question/10992447

8 0

2 years ago