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2 years ago

2.

Mathematics

1 answer:

Lynna [10]2 years ago

6 0

In 15 minutes, Jada would have covered about 2.5 miles, while the cousin would have covered 0.625 miles.

<h3>What is speed?</h3>

Speed is the ratio of distance to time.

For Jada:

Speed = 2 miles / 12 minutes = 0.167 miles per minute

For Jada cousin:

Speed = 1 mile / 24 min = 0.0417 miles per minute.

Hence, in 15 minutes:

Jada distance = 15 min * 0.167 miles per minute = 2.5 miles

Jada cousin distance = 15 min * 0.167 miles per minute = 0.625 miles

In 15 minutes, Jada would have covered about 2.5 miles, while the cousin would have covered 0.625 miles.

Find out more on speed at: brainly.com/question/4931057

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38.07 is 9% of what number?

Nataliya [291]

$38.07 = \frac{9}{100} x$

$38.07 \times \frac{100}{9} = x$

$\frac{3807}{9} = x$

$423 = x$

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2 years ago

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In a recent year, 26.2% of all registered doctors were female. If there were 45,300 female registered doctors that year, what wa

dybincka [34]

Answer:

172,901

Step-by-step explanation:

To found the total number of doctors, divide the number of female doctors by the percentage the female doctors make of the total.

45,300/0.262 = 172,900.7 = 172,901

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3 years ago

Each of 12 refrigerators of a certain type has been returned to a distributorbecause of an audible, high-pitched, oscillating no

yulyashka [42]

Answer:

a.) 0.1685

b.) 0.7922

Step-by-step explanation:

This question is solved by the probability distribution formula for selection which uses the combination formula to derive the answer.

If 7 out of 12 cases Of refrigerators are said to have compressor problem, then the success rate to be used in the probability distribution formula = p = 7/12 = 0.583

Probability of failure = q = 0.417

When choosing r samples from a possible n sample, then probability distribution formula is denoted by :

P(X=r) = nCr × p^n × q^n-r

a.) From possible 6 samples, if P(X=5)

P(X=5) = 6C5 × 0.583^5 × 0.417¹

P(X=5) = 0.1685

b.) P(X≤4) =1 -P(X>4) = 1 - P(X=5) - P(X=6)

P(X=5) as calculated earlier = 0.1685

P(X=6) = 6C6 × 0.583^6 × 0.417^0

P(X=6) = 0.0393.

Hence, P(X≤4) = 1- 0.1685 - 0.0393

P(X≤4) = 0.7922

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3 years ago

HHHHHHEEEEEELLLLLLPPPPPP!!!!!!

mafiozo [28]

Answer:

Undefined

Step-by-step explanation:

if the line is like this __________________ then the slope is zero

If the line is vertical like up and down then the line is undefined.

Hope this helped!!!

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3 years ago

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3x^2-3x<br> ----------- -3<br> x^2-9x<br> please give me the simplified answer + explanation

STatiana [176]

You want us to simplify $\frac{3x^2-3x}{x^2-9x}-3$

first, factor top and bottom
$3x^2-3x=3x(x-1)$
$x^2-9x=x(x-9)$

so we have
$\frac{3x(x-1)}{x(x-9)}-3=$
$\frac{3(x-1)}{x-9}-3$
we want to combine fractions so multiply 3 by $\frac{x-9}{x-9}$
$\frac{3(x-1)}{x-9}-\frac{3(x-9)}{x-9}=$
$\frac{3(x-1)-3(x-9)}{x-9}=$
$\frac{3x-3-3x+27}{x-9}=$
$\frac{24}{x-9}$

the simplified answer is $\frac{24}{x-9}$

8 0

3 years ago