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vfiekz [6]
3 years ago
5

Which of the following equations is equivalent to 2(a + 6) – 3(a – 5) = 18?

Mathematics
2 answers:
meriva3 years ago
5 0
Answer: c

use distributive property:
2(a+6)-3(a-5)+15=18
2a+12-3a+15=18

combine like terms:
2a+12-3a+15=18
-a+27=18
defon3 years ago
4 0

Answer:

\fbox{Option C}

Step-by-step explanation:

Let me know if you want the full explanation. Have a great weekend! ❤

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Answer:

y = 1.6x

Step-by-step explanation:

y is the total amount/pounds of almonds that Lark bought. x is the amount that Tessa bought. 3/5 is the same as 0.6. If we multiplied Tessa's amount by 0.6 it would decrease by 2/5 so we have to add 1 to make it 1.6. To find how much Lark bought multiply 1.6 and Tessa's amount.

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A pair of jeans are originally $39.50 and are 15% off. The sales tax is 7%. After the discount and tax, how much will the total
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Answer:

$35.93

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3 0
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There are 30 musicians in the carter school marching band. How many of them play brass instruments
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There are 7 people who play brass
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What is the area of a trapezoid ABCD with bases AB and CD ,
Mrrafil [7]

check the picture below on the top side.


we know that x = 4 = b, therefore,  using the 30-60-90 rule, h = 4√3, and DC = 4+8+4 = 16.


\bf \textit{area of a trapezoid}\\\\
A=\cfrac{h(a+b)}{2}~~
\begin{cases}
a,b=\stackrel{bases}{parallel~sides}\\
h=height\\[-0.5em]
\hrulefill\\
a=8\\
b=\stackrel{DC}{16}\\
h=4\sqrt{3}
\end{cases}\implies A=\cfrac{4\sqrt{3}(8+16)}{2}
\\\\\\
A=2\sqrt{3}(24)\implies \boxed{A=48\sqrt{3}}


now, check the picture below on the bottom side.


since we know x = 9, then b = 9, therefore DC = 9+6+9 = 24, and h = b = 9.


\bf \textit{area of a trapezoid}\\\\
A=\cfrac{h(a+b)}{2}~~
\begin{cases}
a,b=\stackrel{bases}{parallel~sides}\\
h=height\\[-0.5em]
\hrulefill\\
a=6\\
b=\stackrel{DC}{24}\\
h=9
\end{cases}\implies A=\cfrac{9(6+24)}{2}
\\\\\\
A=\cfrac{9(30)}{2}\implies \boxed{A=135}

7 0
3 years ago
How much does 5+5 gives?​
DaniilM [7]

10

Step-by-step explanation:

3 0
3 years ago
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