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Amanda [17]
3 years ago
5

Bu

Mathematics
1 answer:
irga5000 [103]3 years ago
6 0

Answer:

40

Step-by-step explanation:

A=3B

3B ve B nin en küçük ortak katı 3B dir

3B=30

B=10

3B+B=40

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3.- Resuelve los siguientes problemas que se te plantean.
WINSTONCH [101]

Answer:

Nuevo perímetro del cuadrado = 24 + 4 = 28 cm. Ejemplo 5: El área de un parque cuadrado es de 225 m2.

7 0
3 years ago
Given C is the midpoint of Ad and be
disa [49]

Answer:

By SAS rule

Step-by-step explanation:

Required to Prove

ABC is congruent to DEC

Given

C is midpoint of AD and BE

As C is the midpoint of both line segments

AC=CD

BC=CE

and ∠ACB=∠DCE(Vertically opposite angles)

⇒By SAS(side-AC and DC, angle-∠ACB,∠DCE,side-BC and EC) congruency rule

triangle ABC is congruent to triangle DEC

4 0
3 years ago
FILL IN THE BLANK
IgorLugansk [536]
Now, we know that he's charging $12 per session to each of his students, and he has 14 students currently, so his revenue is just 14 * 12 or 168 bucks.

now, let's take a peek as the session price goes up in jumps of 2, from 12, to 14, 16, 18 and so on, as each jumps happen, the students drop by 1, from 14, to 13, to 12 and so on.

\bf \begin{array}{ccccllll}
\stackrel{increase}{x}&\stackrel{new}{price}&students&\stackrel{revenue}{y}\\
------&------&------&------\\
0&12&14&168\\
1&14&13&182\\
2&16&12&192\\
3&18&11&198\\
\boxed{4}&20&10&\boxed{200}\\
5&22&9&198\\
6&24&8&192\\
7&26&7&182\\
8&28&6&168\\
..&..&..&..
\end{array}

notice, the revenue starts off at 168, goes up up, reaches 200 bucks and then starts to drop back down.

thus, that means the U-turn or vertex of that revenue function is at 4,200, namely h = 4, and k = 200

\bf \qquad \textit{parabola vertex form}\\\\
\begin{array}{llll}
\boxed{y=a(x-{{ h}})^2+{{ k}}}\\\\
x=a(y-{{ k}})^2+{{ h}}
\end{array} \qquad\qquad  vertex\ ({{ h}},{{ k}})\\\\
-------------------------------\\\\
\stackrel{c(x)}{y}=a(x-\stackrel{h}{4})\stackrel{k}{+200}
\\\\\\
\textit{now, we also know that }
\begin{cases}
x=2\\
y=192
\end{cases}\implies 192=a(2-4)^2+200
\\\\\\
-8=a(-2)^2\implies -8=4a\implies \cfrac{-8}{4}=a\implies -2=a
\\\\\\


\bf therefore\qquad \stackrel{ c(x)}{y}=-2(x-4)^2+200\impliedby \textit{let's expand that}
\\\\\\
y=-2(x^2-8x+16)+200\implies y=-2x^2+16x-32+200
\\\\\\
\stackrel{y}{c(x)}=-2x^2+16x+168
3 0
3 years ago
Read 2 more answers
Ethan collected 16 seat belts. He lost 4 of them while walking home. Write an expression to match the words
ale4655 [162]
16=x-4

Hope this is what you meant lol
7 0
3 years ago
What is the answer to 9a-3(2a-4)=15
Alecsey [184]

Answer:

a=1

Step-by-step explanation:

The answer to this problem is 1. This is the answer because  using PEMDAS, you would first have to distribute -3.

So: 9a+ -6a+12=15

Combine like terms:

3a+12=15

Subtract 12 on each side. 3a= 3

Divide 3 on each side.

a=1

Hope this helps!! :D

4 0
3 years ago
Read 2 more answers
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