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Zepler [3.9K]
2 years ago
9

Emma is going to seed grass in her front yard. The yard is 45 feet long by 27 feet wide. Her options at the seed store are: 1 ba

g of 4 lb of seeds costs $5 and covers 500 square feet of area 1 bag of 2 lb of seeds costs $2 and covers 170 square feet of area If the lawn requires one layer of seeds, what is the minimum cost of seeding the grass in Emma's lawn?
Mathematics
1 answer:
aliya0001 [1]2 years ago
3 0
So the total square footage that you need to cover is 1215 ft. The most cost effective way to do that is to use 2 - 4lb bags (to cover 1000 ft) at the cost of $10 and 2 - 2lb bags (to cover 340ft [a little more than you need]) at the cost of $4 to get a grand total of $14.
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Two angles are supplementary the first angle measures 40 degrees what is the second angle
nydimaria [60]
The second angle would be 140⁰. When two angles are supplementary, they add up to 180⁰.
180⁰-40⁰=140⁰
4 0
3 years ago
Can't figure it out!!
Zanzabum
\bf slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ f(x_2)}}-{{ f(x_1)}}}{{{ x_2}}-{{ x_1}}}\impliedby 
\begin{array}{llll}
average\ rate\\
of\ change
\end{array}\\\\
-------------------------------\\\\
f(x)= \cfrac{1}{x}  \qquad 
\begin{cases}
x_1=2\\
x_2=b
\end{cases}\implies \cfrac{f(b)-f(2)}{b-2}=-\cfrac{1}{10}
\\\\\\
\cfrac{\frac{1}{b}-\frac{1}{2}}{b-2}=-\cfrac{1}{10}\implies 
\cfrac{\frac{2-b}{2b}}{b-2}=-\cfrac{1}{10}\implies \cfrac{2-b}{2b}=-\cfrac{b-2}{10}
\\\\\\


\bf \cfrac{2-b}{2b}=\cfrac{2-b}{10}\implies 20-10b=4b-2b^2\impliedby cross-multiplying
\\\\\\
2b^2-4b-10b+20=0\implies 2b^2-14b+20=0
\\\\\\
b^2-7b+10=0\implies 
(b-2)(b-5)=0\implies b=
\begin{cases}
\boxed{5}\\
2
\end{cases}
8 0
2 years ago
I solved 12 I need help with 13 plzzzzzz
nataly862011 [7]

Answer:

8.75:1

Step-by-step explanation:

i could be wrong but im pretty sure

3 0
2 years ago
Read 2 more answers
What is the function notation of h(x)={x-3}+1 if h(-5)
galben [10]

Answer:

-7

Step-by-step explanation:

h(x)={x-3}+1 if h(-5)

When h(-5) = {-5-3}+1 ={-8}+1= -8+1=-7

8 0
3 years ago
The cost of a movie ticket is increased by 15%. The old price was five dollars how much are they now?
Grace [21]

Answer:

5.75 is the answer.

$5.00 x 0.15=0.75

$5.00+0.75=$5.75

4 0
2 years ago
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