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SVETLANKA909090 [29]
3 years ago
11

4.Rebecca biked 4.5 miles today and 3.2 miles

Mathematics
1 answer:
Fudgin [204]3 years ago
6 0

Answer:

10-(4.5+3.2)

= 10-7.7

=2.3 miles

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In a market, 44 of the 80 types of vegetables are grown locally. What percent of the vegetables are grown locally? Identify the
VladimirAG [237]
44 is the part.
80 is the whole.

\frac{44}{80} =\frac{x}{100}

We need to cross multiply, which is: a/b = c/d ⇒ ad=bc

After cross multiplying, we get:

44 \times 100 = 80 \times x\\\\4400 = 80x\\\\\sf{Divide ~80~ on~ both~ sides}\\\\\frac{80x}{80} =\frac{4400}{80}\\\\x =\frac{4400}{80} \\\\\boxed{\bf{52.3809524\approx 52.38}}

Approximately 52.38% of the vegetables are grown locally.
5 0
3 years ago
An account earns simple interest. Find the interest earned. $1200 at 2.8% for 30 months
sasho [114]

let's bear in mind that a year has 12 months, so 30 months is really 30/12 years.


\bf ~~~~~~ \textit{Simple Interest Earned}
\\\\
I = Prt\qquad
\begin{cases}
I=\textit{interest earned}\\
P=\textit{original amount deposited}\dotfill & \$1200\\
r=rate\to 2.8\%\to \frac{2.8}{100}\dotfill &0.028\\
t=years\to \frac{30}{12}\dotfill &\frac{5}{2}
\end{cases}
\\\\\\
I=(1200)(0.028)\left( \frac{5}{2} \right)\implies I=84

8 0
3 years ago
Please help ME!!!!
Margarita [4]

Answer:

0.9

Step-by-step explanation:

3 0
3 years ago
a square swimming pool has a cement sidewalk around it. The sidewalk is the same width all the way around. The outside perimeter
VLD [36.1K]

Answer:

175 square feet

Step-by-step explanation:

the area of the whole thing is 400 ft. (20 x 20=400)

i got the 20 from the perimeter b/c 20+20+20+20=80

then subtract the area of the pool from 400 to get 175.

6 0
3 years ago
Does the graph f(x)=-2x^2 -1 have a maximum or a minimum? Explain.
Serga [27]

Answer:

It has a maximum

Step-by-step explanation:

The way I think about it is looking at "a" (the leading variable's coefficient, so __x²), if it's negative, the graph is a frown, but if it's positive, it's a smile. In this case, a is -2, so the graph would have the shape of a frown, which has a maximum.

I hope this helped!

8 0
3 years ago
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