3 years ago

Evaluate this expression √9/225

Mathematics

1 answer:

abruzzese [7]3 years ago

8 0

Answer: 281

Step-by-step explanation:

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the student to teacher ratio is 15:3. if there are 90 teachers at the school, how many students are there

mixas84 [53]

$15x+3x=90\\
18x=90\\
x=5\\\\
15x=15\cdot5=\boxed{75}$

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4 years ago

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What is the slope of the line that passes through the points (-3, 5) and (1, 7)?

Stells [14]

Answer: The slope of the line is $\frac{1}{2}$

Step-by-step explanation:

The slope of a line can be calculated with the following formula:

$m=\frac{y_2-y_1}{x_2-x_1}$

Then, given the points $(-3, 5)$ and $(1, 7)$ , you can identify that:

$y_2=5\\y_1=7\\\\x_2=-3\\x_1=1$

Knowing these values you can substitute them into the formula for calculate the slope:

$m=\frac{5-7}{-3-1}$

Finally, evaluating, you get that the slope of that line is:

$m=\frac{-2}{-4}\\\\m=\frac{1}{2}$

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3 years ago

Yolanda receives a $1,000 dollar raise each year from her starting salary of $40,800.

RUDIKE [14]

Answer:50,400

Step-by-step explanation:

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3 years ago

A population of size 3,624 grows at a rate of 3% per year, compounded continuously. How big will the population be in 2 years?

rodikova [14]

Answer:

Step-by-step explanation:

The continuous compound formula is

$y=Pe^{rt$ where P is the principle or starting value, r is the growth rate in decimal form, and t is the time in years. For us:

$y=3624e^{(.03)(2)}\\y=3624e^{.06}\\y=3624(1.061836547)\\y=3848.09$

which would probably round to just 3848 people.

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3 years ago

Please help due in 5 minutes !

SpyIntel [72]

The first option is correct

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3 years ago

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