Help! I really need help with this! I’m SO confused!

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

7 0

Hi I am learning this too. Okay so first is there any type of picture that shows if angles ABC are congruent to angles CDA. If there is i'll be able to help you.

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in local theaters showing an animated movie they charge $5 per ticket for a child and $12 per ticket for an adult they sell a to

Evgesh-ka [11]

C+A=342
$5C+$12A=$2,550

5C+5A=1710
5C+12A=2550
-7C=-840
C=120

5(120)+12A=2550
600+12A=2550
12A=1950
A=163

4 0

4 years ago

Read 2 more answers

Part I

klemol [59]

It depends on the shape it may be rotation

6 0

4 years ago

A pilot can fly an airplane 2240 miles with the wind in the same time as she can fly 1920 miles against the wind. If the speed o

Artist 52 [7]

Recall your d = rt, distance = rate * time

so... hmm if the plane has a still air speed of say "r", when it's going with the wind, is not really going "r" fast, is going "r + 40 ", because the wind is adding 40mph to its speed, is really moving.

and when the plane is going against the wind, is not really going "r" fast either, is going " r - 40 ", because the wind is eroding speed from it.

now, it went 2240 miles for say "t" hours, and it did 1920 miles for the same length of time, "t" hours.

$\bf \begin{array}{lccclll}
&distance&rate&time\\
&-----&-----&-----\\
\textit{with the wind}&2240&r+40&t\\
\textit{against the wind}&1920&r-40&t
\end{array}
\\\\\\
\begin{cases}
2240=(r+40)t\implies \frac{2240}{r+40}=\boxed{t}\\
1920=(r-40)t\\
----------\\
1920=(r-40)\left( \boxed{\frac{2240}{r+40}} \right)
\end{cases}
\\\\\\
1920=\cfrac{(r-40)2240}{r+40}\implies 1920(r+40)=(r-40)2240
\\\\\\
1920r+76800=2240r-89600\implies 166400=320r
\\\\\\
\cfrac{166400}{320}=r$

and surely you know how much that is.

6 0

3 years ago

F n and m are integers and n2 m2 is even, which of the following is impossible?

iren2701 [21]

So, I think that you mean that

n²+m² is even? (the "plus" sign is missing, but I think this is correct).

this can only happen if either:

both n and m are even
or
both n and m are odd

That's because a sum of two expressions is even if either both or none of the expressions summed is even, and a power of a number is even only if the number is even too.

are those some of the options?

yes!
n and m are even,- possible!
n and m are odd, -possible!
n+m is even, - possible; it would be the case if either both n and m are even or both n and m are odd n+m is odd,

so the option we'll choose is:

none of these are impossible

6 0

4 years ago

Help me again. i need help. thx 4 helping

VARVARA [1.3K]

Answer:

16 square units

Step-by-step explanation:

The formula for the area of a right triangle is ab/2 (a and b both being legs).

First, we find the legs' length which is MK and JK.

Since both points J and K are on the same y level, we look at the X coordinates and see how far apart they are.

Since both points M and K are on the same x level, we look at the Y coordinate.

M is 4 points away from K, so the leg MK is 4 units long.

J is 8 points away from K, so the leg JK is 8 units long.

Plug this into the formula and we get

$\frac{4*8}{2}$

$\frac{32}{2} = 16$

8 0

3 years ago