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Lady bird [3.3K]
2 years ago
8

Please help will give brainllest! Please explain!

Mathematics
2 answers:
Gnesinka [82]2 years ago
8 0

Answer:

A. 13 boxes

B. $18.00

C. $3.60

D. 0.30

Step-by-step explanation:

6 boxes = 21.60

that is 3.60 per box

A.  50.00/3.60 = 13.88 so he can purchase 13 boxes

B.  1 box is 12 ounces

60/12 = 5 boxes needed for 60 ounces. 5 x 3.60 = 18

C. One box is 3.60

D.  3.60/12 = 0.30 per ounce

GuDViN [60]2 years ago
4 0
Answer:
A) 13 boxes
B) $18.00
C) $3.60
D) 0.30
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3 years ago
If x=(10-3i) and y=(3-10i), then xy=? and x/y=?
Solnce55 [7]

Answer:

xy=-109i

\frac{x}{y}=\frac{60}{109}+\frac{91}{109}i

Step-by-step explanation:

xy=(10-3i)(3-10i)

To compute x times y must use foil on the right hand side.

First:  10(3)=30

Outer: 10(-10i)=-100i

Inner: -3i(3)=-9i

Last: -3i(-10i)=30i^2=-30

------------------------------------Add like terms:

-109i

----------------

\frac{x}{y}

\frac{10-3i}{3-10i}

Multiply top and bottom by bottom's conjugate:

\frac{(10-3i)(3+10i)}{(3-10i)(3+10i)}

Foil the top and just do first and last of Foil for the bottom since the bottom contains multiplying conjugates:

\frac{30+100i-9i-30i^2}{9-100i^2}

Replace i^2 with -1:

\frac{30+91i+30}{9+100}

\frac{60+91i}{109}

\frac{60}{109}+\frac{91}{109}i

7 0
3 years ago
Can someone help me with this. Will Mark brainliest.
HACTEHA [7]

Answer: True!

Step-by-step explanation: Rhombuses are like squares with an 4 equivalent sides!

hope this helped have a nice day ! :)

4 0
2 years ago
Read 2 more answers
Help please............
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