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Simora [160]
3 years ago
9

Please help me with this

Mathematics
2 answers:
scoray [572]3 years ago
6 0
I say its “there would be less food”
ladessa [460]3 years ago
4 0

Answer:

A) There would be less food.

Step-by-step explanation:

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Please help me with this question!
gavmur [86]
First off, let's convert the percentages to decimal format, so our 77% turns to 77/100 or 0.77, and our 55% turns to 55/100 or 0.55 and so on

now, the sum of both salines, must add up to the 77% mixture, let's say is "y"
so, 11 + 4 = y, and whatever the concentration level is, must also sum up to the mixture's concentration of 77%

anyway   thus

\bf \begin{array}{lccclll}
&amount&concentration&
\begin{array}{llll}
concentrated\\
amount
\end{array}\\
&-----&-------&-------\\
\textit{first sol'n}&11&x&11x\\
\textit{second sol'n}&4&0.55&2.20\\
------&-----&-------&-------\\
mixture&y&0.77&0.77y
\end{array}\\\\
-------------------------------\\\\
\begin{cases}
11+4=y\implies 15=\boxed{y}\\
11x+2.2=0.77y\\
----------\\
11x+2.2=0.77\cdot \boxed{15}
\end{cases}

solve for "x"
6 0
3 years ago
Is 81 divisible by 3?
AlexFokin [52]
Yes 81 is divisible by 3
the answer is 27
because 81 divided by 3 = 27

3 0
3 years ago
Read 2 more answers
Find the 20th term of the arithmetic sequence 15,9,3,-3
kati45 [8]

Answer:

-99

Step-by-step explanation:

a = 15 \\ d =  - 6 \\  {n}^{th} term = a + (n + 1)d  = 15 + (n - 1)( - 6) \\  {20}^{th} term =15 + (20 - 1)( - 6) = 15 - 114 =  - 99

3 0
2 years ago
Which function is the inverse of Rx) = 8x + 4?
babunello [35]

Answer:

B.~f^{-1}(x)=\frac{x-4}{8}

Step-by-step explanation:

To find the inverse of a function, swap the places of the x and y variables and solve for y again.

x=8y+4\\x-4=8y\\\frac{x-4}{8}=y

5 0
2 years ago
Read 2 more answers
Which ordered pairs are solutions to the inequality 2x+3y≥−1 ?
Pavlova-9 [17]
There are many pairs that are solutions to this inequality. You can find them all by graphic this on a coordinate plane and then shading the region. 

You can also plug any of the ordered pairs that they give you into the equation and see if they produce a true statement. 
7 0
3 years ago
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