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2 years ago

True or false 1 2/5 minus 3/4 equals 1/4 plus 2/5

2 answers:

8 0

Get common denominators, and solve for each expression
7/5 - 3/4 = 28/20 - 15/20 = 13/20
1/4 + 2/5 = 5/20 + 8/20 = 13/20
These two fractions are equivalent

lana66690 [7]2 years ago

3 0

True they both equal to 13\20 hope this helps :p

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Rick knows that 1 cup of glue weighs 1/18 pound. He has 2/3 pound of glue. How many cups of glue does he have?

Basile [38]

$\begin{array}{ccc}1\ cup&-&\frac{1}{18}\ lb\ (pound)\\\\x\ cup&-&\frac{2}{3}\ lb\ (pounds)\end{array}\ \ \ \ \ \ cross\ multiply\\\\\\\frac{1}{18}x=1\times\frac{2}{3}\\\\\frac{1}{18}x=\frac{2}{3}\ \ \ \ \ \ |multiply\ both\ sides\ by\ 18\\\\18\times\frac{1}{18}x=18\times\frac{2}{3}\\\\x=6\times2\\\\\boxed{x=12}\\\\Answer:He\ has\ 12\ cups\ of\ glue.$

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3 years ago

When multiplying 4.73 by 2.1 how many decimal places will the product have

hichkok12 [17]

it would be 9.93300

so 3 decimal places because the zeros don't count

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3 years ago

Read 2 more answers

What one should I choose I'm stumped ??

Karolina [17]

The second one is the best answer in my opinion i'm not sure.

8 0

2 years ago

Read 2 more answers

if Dakota earned $15.75 in interest in account A and $28.00 in interest in account B after 21 months. if the simple interest rat

NISA [10]

keeping in mind that 21 months is more than a year, since there are 12 months in a year, then 21 months is really 21/12 years.

$\bf ~~~~~~ \stackrel{\textit{account A}}{\textit{Simple Interest Earned}} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill &15.75\\ P=\textit{original amount deposited}\dotfill \\ r=rate\to 3\%\to \frac{3}{100}\dotfill &0.03\\ t=years\to \frac{21}{12}\dotfill &\frac{7}{4} \end{cases} \\\\\\ 15.75=P(0.03)\left( \frac{7}{4} \right)\implies \cfrac{15.75}{(0.03)\left( \frac{7}{4} \right)}=P\implies \boxed{300=P}$

$\bf ~~~~~~ \stackrel{\textit{account B}}{\textit{Simple Interest Earned}} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill &28\\ P=\textit{original amount deposited}\dotfill \\ r=rate\to 4.9\%\to \frac{4.9}{100}\dotfill &0.049\\ t=years\to \frac{21}{12}\dotfill &\frac{7}{4} \end{cases} \\\\\\ 28=P(0.049)\left( \frac{7}{4} \right)\implies \cfrac{28}{(0.049)\left( \frac{7}{4} \right)}=P\implies \boxed{326.53\approx P}$

so, clearly, you can see who's greater.

3 0

3 years ago

Slope is a measure of the steepness of a line. It is a ratio of horizontal change (rise) to vertical change (run).

Nonamiya [84]

See in the explanation

<h2>Explanation:</h2>

We can write the Slope-Intercept form of the equation of a line as:

$y=mx+b \\ \\ Where: \\ \\ m:Slope \\ \\ b:y-intercept$

The slope is a measure of the steepness of a line It is a ratio between vertical change (run) and horizontal change (rise), so we can also write the slope (m) as:

$m=\frac{Change \ in \ y}{Change \ in \ x}=\frac{rise}{run}$

We have the following facts:

If we increase the rise, the slope also increases and if we decrease the rise the slope also decreases.

If we increase the run, the slope decreases and if we decrease the rise the slope increases.

<h2 /><h2>Learn more:</h2>

Slope of tangent to curves: brainly.com/question/12383276

#LearnWithBrainly

8 0

2 years ago