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3 years ago

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A student is given a rock that is known to have a mass of 436.8 grams. She measures the mass of the rock three different times w

ith the following results: 460.9 g, 461.4g, 459.0 g. Calculate the percent error of the student.

1 answer:

love history [14]3 years ago

5 0

I’m not sure just need to answer questions to help me so sorry

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If f(x) is an exponential function where f(-1.5) 26 and

mariarad [96]

Answer:

$f(10) = 1147.25$

Step-by-step explanation:

Given

$f(-1.5) = 26$

$f(5.5) = 7$

Required

f(10)

An exponential function is represented as:

$f(x) = ab^x$

$f(-1.5) = 26$ impleies that:

$26 = ab^{-1.5}$ --- (1)

$f(5.5) = 7$ implies that

$7 = ab^{5.5}$ --- (2)

Divide (2) by (1)

$26/7 = ab^{-1.5}/ab^{5.5}$

$3.71429 = b^{-1.5+5.5}$

$3.71429 = b^{4}$

Take 4th root

$b = 1.39$

Substitute $b = 1.39$ in $26 = ab^{-1.5}$

$26 = a * 1.39^{-1.5}$

$26 = a * 0.6102$

Solve for (a)

$a = 26/0.6102$

$a = 42.61$

f(10) is calculated as:

$f(10) = ab^{10}$

$f(10) = 42.61 * 1.39^{10}$

$f(10) = 1147.25$

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3 years ago

3. There were 567 whos in Whoville. Each who ate 814 bowls of

Rasek [7]

All together, there were 461,538 bowls of stew eaten all together.

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3 years ago

The diameter of a circle is 6 in. Find its area to the nearest tenth.

Marrrta [24]

Answer and Step-by-step explanation:

The area formula for a Circle is:

A = $\pi r^2$

Diameter is equal to the radius times 2.

<u>So, divide the diameter to get the radius.</u>

6 divided by 2 equals 3.

<u>Now, plug it into the formula.</u>

$A = \pi (3)^{2}$

A = $9\pi$

Plug this into your calculator by multiplying 9 by pi.

<u>We get the answer to be 28.3 when rounded to the nearest tenth.</u>

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<em><u>#teamtrees #PAW (Plant And Water)</u></em>

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3 years ago

In a grade seven class, 18 students have pets, and 12 do not. What percent of the class has a pet?

Svetradugi [14.3K]

Answer :
If 18+12 is 30 and only 18 of them has pets then 70 percent have pets

7 0

3 years ago

Read 2 more answers

What is the answer?????/

SCORPION-xisa [38]

The questions is, when z=9, 3z = ? When you multiply 3*9, you get 27

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4 years ago