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3 years ago

There are 42 males and 67 females participating in a marathon. What percent of the participants are male?

2 answers:

8 0

38% of participants are males.
Add 42 and 67 to get 109. Then do 42/109 to get an answer of .385, which can translate to 38%.

ch4aika [34]3 years ago

5 0

Answer:

45,78%

Step-by-step explanation:

42 + 67 = 109

109 x 42 / 100 = 45,78 %

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Each music class sings 8 songs a week. How. Many songs does each class sing in 5 weeks 6 weeks 7 weeks

crimeas [40]

Answer:

40, 48, 56

Step-by-step explanation:

8x5 is 40

8x6 is 48

8x7 is 56

I hope this helps have a good day

7 0

3 years ago

Solve for n.<br> n^2–15n–16=0

Fofino [41]

N = {15 +- root of ( 225 + 64) } / 2
= {15 +- root of 289 } / 24
= 15 + 17 } / 2 or { 15 -17 } /2
= 16 or -1

5 0

3 years ago

Write a function for the situation discribed and find the value after 5 yrs. A $12,500 car depreciates 9% each year. Please help

sweet [91]

$\bf \qquad \textit{Amount for Exponential Decay}\\\\
A=P(1 - r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{initial amount}\to &12500\\
r=rate\to 9\%\to \frac{9}{100}\to &0.09\\
t=\textit{elapsed time}\\
\end{cases}
\\\\\\
A=12500(1-0.09)^t\implies A=12500(0.91)^t
\\\\\\
\textit{after 5 years t = 5}\qquad A=12500(0.91)^5$

and surely you know how much that is.

5 0

3 years ago

F(x)=5x-6,when x = 8

Viefleur [7K]

Answer:

f(8)=34

Step-by-step explanation:

4 0

2 years ago

[PLEASE HELP] Consider this function, f(x) = 2X - 6.

ira [324]

Answer:

Find answer below

Step-by-step explanation:

f(x)=2x-6

Domain of 2x-6: {solution:-∞<x<∞, interval notation: -∞, ∞}

Range of 2x-6: {solution:-∞<f(x)<∞, interval notation: -∞, ∞}

Parity of 2x-6: Neither even nor odd

Axis interception points of 2x-6: x intercepts : (3, 0) y intercepts (0, -6)

inverse of 2x-6: x/2+6/2

slope of 2x-6: m=2

Plotting : y=2x-6

7 0

3 years ago