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Temka [501]
3 years ago
7

What is the area of a rectangle whose length is 12 and whose diagonal is 13?

Mathematics
2 answers:
never [62]3 years ago
7 0

Answer: draw the rectangle. you can see that the diagonal will then be the hypotenuse of a right triangle

Step-by-step explanation:

Naya [18.7K]3 years ago
5 0
Answer: 60

Explanation: A=wl
d= square root of w^2 +l^2

Solving for A:

A=l square root of d^2-l^2= 12* square root of 13^2- 12^2=60

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MARKING AS BRAINLIEST!! Starr if given functions are inverse)!
Kitty [74]

Answer: They are inverses of each other

==========================================================

Explanation:

We'll need to compute h(f(x)) and f(h(x)) to see if we get x each time.

h(x) = 9x-4\\\\h(f(x)) = 9(f(x))-4\\\\h(f(x)) = 9\left(\frac{x+4}{9}\right)-4\\\\h(f(x)) = x+4-4\\\\h(f(x)) = x\\\\

and,

f(x) = \frac{x+4}{9}\\\\f(h(x)) = \frac{h(x)+4}{9}\\\\f(h(x)) = \frac{9x-4+4}{9}\\\\f(h(x)) = \frac{9x}{9}\\\\f(h(x)) = x\\\\

Both composite functions lead to x each time.

The equations h(f(x)) = x and f(h(x)) = x being true means each function is the inverse of the other.

5 0
3 years ago
Read 2 more answers
Dave is trying to save money for a new video game console that costs $325. he has already saved $150. If he saves $25 a week, ho
r-ruslan [8.4K]
It will take Dave 7 weeks to earn the right amount of money.
5 0
4 years ago
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Which situation can be represented by the inequality? x<90 A. A refrigerator weighs more than 90 kg. B.There are 90 children
stellarik [79]
The inequality is:  x < 90 ( or x is less than 90 ).
Answers A and D are represented by: x > 90.
Answer B is represented by: x = 90.
Therefore this situation is:
C ) A kiddie pool holds under 90 L of water.

6 0
3 years ago
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Help please<br> ……………………..
ExtremeBDS [4]

Answer:

b ≈ 48.6°

Step-by-step explanation:

Using the sine ratio in the right triangle

sin b = \frac{opposite}{hypotenuse} = \frac{9}{12} , then

b = sin^{-1} (\frac{9}{12} ) ≈ 48.6° ( to 1 dec. place )

8 0
3 years ago
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Joaquin fue al mercado y compro 2,2 kg de papa a S/.1,2 soles el kilo y 3,2 kg de arroz a S/.3,7 soles el kilo, si pagó con un b
nlexa [21]

Responder:

5,52

Explicación paso a paso:

Dado lo siguiente:

Precio por kilo de papa = 1.2

Kg de papa comprada = 2.2kg

Precio por kilo de arroz = 3.7 por kilo

Kg de arroz comprado = 3.2 kg

Valor del boleto emitido para el pago = 20

Precio total de la papa:

Precio * kg comprado

1.2 * 2.2 = 2.64

Precio total del arroz:

Precio * kg comprado

3.7 * 3.2 = 11.84

Cantidad total gastada = (precio total del arroz + precio total de la papa)

2.64 + 11. 84 = 14.48

Cambio pendiente = 20 - 14.48 = 5.52

5 0
3 years ago
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