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allochka39001 [22]
3 years ago
7

I am making two kinds of cookies: chocolate chip and lemon cookies.

Mathematics
1 answer:
Shkiper50 [21]3 years ago
8 0

Answer:

Step-by-step explanation:

ljkml

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Find the area of the triangle
olchik [2.2K]

Answer:

4.5

Step-by-step explanation:

1/2 times base times height

( Area of a triangle )

1/2(3)(3)

=4.5

6 0
3 years ago
What is the value of x ?
jolli1 [7]

Answer:

x=3

Step-by-step explanation:

180-120=60

60+15x+5+22x+4=180

69+37x=180

37x=111

x=3

4 0
3 years ago
A pharmacist has an 18% alcohol solution and a 40% alcohol solution. How much of each should he mix together to make 10 liters o
ladessa [460]
X = amount of the 18% solution

y = amount of the 40% solution

we know the 18% solution has only 18% of alcohol, the rest is maybe water or something, now, how many liters is 18%?  well, 18% of anything is just (18/100) * anything, so, 18% of x is just (18/100) *x or 0.18x, and that's how many liters are there.

likewise, how many liters are there in the 40% solution?  well, (40/100) * y, or 0.4y, that many.

we know the mixture has to yield 10 liters at 20% alcohol, how many liters of only alcohol is that?  well, (20/100) * 10, or 2 liters.

\bf \begin{array}{lccclll}
&\stackrel{liters}{amount}&\stackrel{alcohol~\%}{quantity}&\stackrel{liters}{alcohol}\\
&------&------&------\\
\textit{18\% solution}&x&0.18&0.18x\\
\textit{40\% solution}&y&0.40&0.4y\\
------&------&------&------\\
mixture&10&0.20&2
\end{array}

\bf \begin{cases}
x+y=10\implies \boxed{y}=10-x\\
0.18x+0.4y=2\\
----------\\
0.18x+0.4\left( \boxed{10-x} \right)=2
\end{cases}
\\\\\\
0.18x-0.4x+4=2\implies -0.22x=-2
\\\\\\
x=\cfrac{-2}{-0.22}\implies x=\cfrac{100}{11}\implies x=9\frac{1}{11}

how much of the 40% solution?  well y = 10 - x
3 0
3 years ago
Which of the following best describes how the y values are changing over each interval?
ziro4ka [17]

Answer:

y=ax+b

a=-0.6020457867

b=-2.256697516   <------- There is your value for b, which is the answer to the problem.

You can use these values for a and b to generate an equation in slope-intercept form, which you can then enter under Y= and view the graph.

Step-by-step explanation:

6 0
2 years ago
"Expand the brackets and Simplify"<br>(pls i need help asap)​
givi [52]
A) 2(1+2c)

2+4c = 2+4c

B) 6(14r-2t)

= 84r-12t
6 0
2 years ago
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