2 years ago

I don't get this question

Mathematics

1 answer:

vichka [17]2 years ago

4 0

About $1.80 because 8.7590 divide by 4.80 is about$1.80

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Fiona has $18 to spend. She spent $4.25, including tax, to buy a notebook. She needs to save $9.75, but she wants to buy a snack

Irina18 [472]

1. $18-4,25=13,75 \\ 13,75-9,75=4 \\ 0,50x \leq 4$ ⇔ $x= \frac{4}{0,50}$ ⇔ $x= 8$
R: She can buy 8 crackers

2. Amy used 13%
Dan used 0,14*100 = 14%
Mike used 0,5*100 = 50%
R: Mike used the greatest amount of milk.

3 0

2 years ago

2+6i/2-4i = a + bi What is the value of a? What is the value of b?

Talja [164]

$\dfrac{2+6i}{2-4i}\\\\\\=\dfrac{2(1+3i)}{2(1-2i)}\\\\\\=\dfrac{1+3i}{1-2i}\\\\\\=\dfrac{(1+3i)(1+2i)}{(1-2i)(1+2i)}\\\\\\=\dfrac{1+2i+3i+6i^2}{1-(2i)^2}\\\\\\=\dfrac{1+5i-6}{1+4}~~~~;[i^2=-1]\\\\\\=\dfrac{5i-5}{5}\\\\\\=\dfrac{5(i-1)}5\\\\=i-1\\\\=-1+i\\\\\text{It is in a form of a +bi so,}~ a = -1~ \text{and}~ b = 1$

6 0

2 years ago

The question is in the picture

kompoz [17]

Answer:

questions 2 answe is x+3less than equal to 13

3 0

2 years ago

Select all the equations where m = 4 is a solution.

Aneli [31]

The answers are A,B, and E. Hope this helps. :)

4 0

2 years ago

Really need help! Brainliest to correct!

zlopas [31]

Answer:

Given:

R(x) = 59x - 0.3x²
C(x) = 3x + 14

Find the following:

P(x) = R(x) - C(x) = 59x - 0.3x² - 3x - 14 = -0.3x² + 56x - 14
R(80) = 59(80) - 0.3(80²) = 2800
C(80) = 3(80) + 14 = 254
P(80) = 2800 - 254 = 2546

7 0

2 years ago