2 years ago

Which expression or value is equivalent to (−3+5i)(−3−5i)?

Mathematics

1 answer:

zalisa [80]2 years ago

8 0

Answer:

9-25i is equivalent to (−3+5i)(−3−5i)

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HELP DUE IN 15 MINS!<br><br> x =??

Alisiya [41]

Answer:

x = 32

Step-by-step explanation:

Using the Secant and Tangent Intersection Theorem we can say;

(x + 18) (18) = 30²

18x + 324 = 900

18x = 576

x = 32

Hope this helps!

5 0

2 years ago

Read 2 more answers

Ajay bought a fan and a heater for rs 4000. He sold the fan at a profit of a 25% and the heater at a loss of 5%. If he gained 7%

Alborosie

Answer: Heater -Rs 2400; Fan- Rs 1600

Step-by-step explanation:

Given

Ajay bought a fan and a heater for Rs 4000

Suppose the price of fan is x and that of heater is 4000-x

Profit on the fan is $0.25x$

Loss on heater is $0.05\times (4000-x)$

Total profit is 7% i.e. $0.07\times 4000$

$\therefore 0.07\times 4000=0.25x-0.05(4000-x)\\\Rightarrow 280=0.25x-200+0.05x\\\Rightarrow 480=0.3x\\\Rightarrow x=1600$

Thus, the price of heater is $4000-1600=Rs.\ 2400$

Price of fan is $Rs.\ 1600$

Price of heater is $Rs.\ 2400$

8 0

2 years ago

Find the selling price of a $7.50 agenda book with a 15% discount.

tatuchka [14]

The answer is $6.38 hope this helps

7 0

2 years ago

Read 2 more answers

¿Se puede distribuir el exponente de una suma o una resta? ¿Y la raiz?

azamat

Si se puede distribuir el exponente de una suma porque si 2+3 elevado al 2 entonces el Raiz seria cuadrada de 19

6 0

2 years ago

A scuba diver descends farther down into the ocean from an initial depth of 15.2 feet below sea level. The scuba diver descends

gavmur [86]

Answer:

r <= 12.6

Step-by-step explanation:

Let's calculate the rate at which he descends:

r = (46.7 - 15.2)/212 = 0.15 feet/minute

5 0

1 year ago