All categories

2 years ago

WILL GIVE BRAINLIEST FOR A CORRECT ANSWER:

Mathematics

2 answers:

guapka [62]2 years ago

7 0

Answer:

Solution:

the boat's speed in still water: x

The speed with current: (x+3)

The speed against current: (x-3)

The equation is

3(x+3) = 4(x-3)

x = 21 mph

The distance = 3*(21+3)= 72 miles

I choose (A)

Step-by-step explanation:

dlinn [17]2 years ago

3 0

Answer:

72 Miles

Step-by-step explanation:

You might be interested in

BRAINLIEST ASAP! PLEASE HELP ME :)

jeyben [28]

<em>See above information</em>

I am joyous to assist you anytime.

7 0

2 years ago

The cost of renting a sailboat at a lake is $20 per hour plus $14 for lifejackets. Write an equation in slope-intercept form tha

aalyn [17]

Answer:

y=20x+14, where:

y is the total amount you would pay for using the sailboat

x is the number of hours the sailboat is used

Step-by-step explanation:

An equation in slope-intercept form is set up as y=mx+b. From the information provided, the equation would indicate that the cost of renting the boat would be equal to the price per hour for the number of hours plus the cost of lifejackets and the equation in slope-intercept form that can be used is:

y=20x+14, where:

y is the total amount you would pay for using the sailboat

x is the number of hours the sailboat is used

8 0

2 years ago

Evaluate e/4 +2f when e=12 and f =1/2

allochka39001 [22]

12/4 = 3 + 2x 1/2
Divide and then multiply and your answer will be 4

5 0

2 years ago

A person must score in the upper 8% of the population on an IQ test to qualify for membership in MENSA, the international high-I

Cloud [144]

Answer:

A person must get an IQ score of at least 138.885 to qualify.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 115, \sigma = 17$