All categories

2 years ago

PLS HELP!! GIVING BRAINLIST!!

Mathematics

2 answers:

7nadin3 [17]2 years ago

6 0

Answer:

f = 4n

f = n+27

Fred is 36 years old and Nathan is 9 years old.

n = 9

Step-by-step explanation:

atroni [7]2 years ago

5 0

Answer:

Step-by-step explanation:

Ooh I love these type of problems

Okay, here we go :

f = Fred and n = Nathan

f = 4n

f = n + 27

Above are the two equations (the words translated into algebra)

Now you can solve using substitution (any method works, but substitution is easiest for this problem)

4n = n + 27

3n = 27

n = 9

Since n = 9 substitute n into either equation

f = 4 * 9

f = 36

Fred is 36 and Nathan is 9

lol :)

You might be interested in

Suppose taxi fare from Logan Airport to downtown Boston is known to be normally distributed with a standard deviation of $2.50.

Mariulka [41]

Answer:

95% Confidence interval for taxi fare: ($20.5,$24.2)

Step-by-step explanation:

We are given the following data set: for fares:

$22.10, $23.25, $21.35, $24.50, $21.90, $20.75, and $22.65

Formula:

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{156.5}{7} = 22.35$

95% Confidence interval:

$\bar{x} \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$22.35 \pm 1.96(\frac{2.5}{\sqrt{7}} ) = 22.35 \pm 1.85 = (20.5,24.2)$

6 0

2 years ago

I dont understand the circled question ....please help!

irina1246 [14]

Parallel lines NEVER intersect/meet, this is because they have the same slope and they go in the same direction.

These lines are parallel because they have the same slopes of 3/4 (because they go 3 units up and 4 units to the right. slope = rise/run)

7 0

3 years ago

2% as a decimal help

Free_Kalibri [48]

the answer i got is 0.02

7 0

3 years ago

Read 2 more answers

Write the ratio in simplest form: 27 red markers to 12 blue markers

elena-14-01-66 [18.8K]

What do you mean by this? Do you have a picture

6 0

2 years ago

Calculate the slope of the line which passes through the points (8,7) and (11, 3)

shepuryov [24]

Answer:

negative 1 1/3

Step-by-step explanation:

you do y2 minus y1 over x2 minus x1 then you simplify.

8 0

3 years ago