3 years ago

ANSWER ASAP RIGHT ANSWER = BRAINLIST 100 POINTS

Mathematics

2 answers:

ale4655 [162]3 years ago

8 0

Answer:

-6.75

Hooe it helps!

Please mark brainliest

lora16 [44]3 years ago

6 0

I HOPE THIS TIME IT WILL HELP YOU.

THANK YOU

^ - ^

Can we be friends ?

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What is 14 pints equal to in cups?

lilavasa [31]

There are 2 cups in 1 pint. So you could count by 2s until you get to 14. Or you can multiply 14×2=28

4 0

3 years ago

Write the following quotient in the form a+bi.<br> -7i/2-7i

Helga [31]

Answer:

$\large\boxed{\dfrac{49}{53}-\dfrac{14}{53}i}$

Step-by-step explanation:

$\text{Use}\\\\i=\sqrt{-1}\to i^2=-1\\\\(a-b)(a+b)=a^2-b^2\to(a-bi)(a+bi)=a^2+b^2\\\\\text{distributive property}\ a(b+c)=ab+ac\\---------------------\\\\\dfrac{-7i}{2-7i}=\dfrac{-7i}{2-7i}\cdot\dfrac{2+7i}{2+7i}=\dfrac{-7i(2+7i)}{2^2+7^2}=\dfrac{(-7i)(2)+(-7i)(7i)}{4+49}\\\\=\dfrac{-14i-49i^2}{53}=\dfrac{-14i-49(-1)}{53}=\dfrac{-14i+49}{53}\\\\=\dfrac{49}{53}-\dfrac{14}{53}i$