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arsen [322]
2 years ago
11

Help plz I don’t understand how to do this math below

Mathematics
2 answers:
ASHA 777 [7]2 years ago
4 0

1. \frac{1}{3}  \times  \frac{2}{5}  \\  \frac{1 \times 2}{3 \times 5}  =  \frac{2}{15}

2. \frac{2}{5}  \div  \frac{3}{5}  \\  \frac{2}{5}  \times  \frac{5}{3}  \\   = \frac{2}{3}

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>

NeTakaya2 years ago
4 0

1. When multiplying fractions, multiply the numerators and multiply the denominators:

1/3 x 2/5 = (1 X 2) / (3 X 5) = 2/15

2. When dividing fractions multiply by the inverse of the second fraction.

2/5 / 3/5 = 2/5 x 5/3 = 10/15 = 2/3

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Eddi Din [679]
Multiply the numerator and denominator by 4+5i
=[(2+3i)(4+5i)]/[(4-5i)(4+5i)] 
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3 0
3 years ago
Michael and Landon work at a dry cleaners ironing shirts. Michael can iron 40 shirts per hour, and Landon can iron 20 shirts per
BartSMP [9]

Answer:

Michael worked 4 hours and Landon worked 10 hours.

Step-by-step explanation:

Michael can iron 40 shirts each hour, so in xx hours he can iron 40x40x shirts. Landon can iron 20 shirts each hour, so in yy hours he can iron 20y20y shirts. The total number of shirts ironed 40x+20y equals 360:

40x+20y=360

40x+20y=360

Since Michael and Landon worked a combined 14 hours, we know x+yx+y must equal 14.

x+y=14

Write System of Equations:

​

40x+20y= 360

x+y=14

Solve for y in each equation:

​

40x+20y = 360  x+y = 14 20y = -40x+360  

\frac{-20y}{20} =\frac{-40x+360}{20}

y = -2x+18

​

 

​

7 0
3 years ago
Water come out of a pipe at a rate of 16 gallons per minute. How many gallons have come out after 4 minutes​
alina1380 [7]

Answer:

64 gallons

Step-by-step explanation:

Ask yourself; if

 16gallons = 1minute

     ?           = 4minutes

Cross multiply;

(16 × 4) ÷ (1) = 64

7 0
3 years ago
Can someone check this one for me , thank you!
Rudik [331]

Answer:

C

Step-by-step explanation:

Using sum/difference to product identity

• sin x - sin y = 2 cos(\frac{x+y}{2}) sin (\frac{x-y}{2})

with x = 4Θ and y = 2Θ

Then

sin(4Θ) - sin(2Θ)

= 2 cos(\frac{4o+2o}{2}) sin(\frac{4o-2o}{2})

= 2cos(3Θ)sinΘ → C

8 0
3 years ago
I NEED HELP ASAP!!!
BlackZzzverrR [31]

Answer:

The number that would go in the blank to get a perfect square trinomial is 18

Step-by-step explanation:

The middle term can always be found by taking twice of the square root of the final term.

2 * √81 = 18

5 0
3 years ago
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