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Cloud [144]
3 years ago
14

Please help. Don’t understand these two math problems

Mathematics
1 answer:
marishachu [46]3 years ago
6 0
For the first one the answer is 1.25 per mile.

For the second one the answer is the airplane will take 2 minutes to defend.

Hope this helps(:
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(1+i)^2(x+yi)=4+5i<br> Solve for x and y
faust18 [17]

Answer:

x = 5/2

y = -2

Step-by-step explanation:

(1+i)² (x+yi) = 4+5i

(1+2i+i²)(x+yi) = 4+5i

(1+2i-1)(x+yi) = 4+5i

2i(x+yi) = 4+5i

2i²y + 2xi = 4+5i

-2y + 2xi = 4 + 5i

By comparing both sides,

-2y = 4

y = -2,

2x = 5

x = 5/2

7 0
2 years ago
Ling uses 21 bananas ro make 7 fruit smoothies.what is the rate that ling uses for banana per each smoothie?what is the unit rat
kifflom [539]

Answer:

he uses three bananas per smoothie

so he he uses 3/21 of 1/7 of bananas per smoothie

Step-by-step explanation:

6 0
3 years ago
PLEASE HELP I DONT KNOW HOW TO DO THIS
sergij07 [2.7K]

Answer:

step by step

Step-by-step explanation:

where

r = radius

h= height

Area of a cylinder = 2πrh+2πr^2

Area of a cylinder = 2π8(3)+2π8^2

Area of a cylinder = 176π = 552.92

Area of a hemisphere= 3r2π

Area of a hemisphere= 3(2)2π

Area of a hemisphere= 12π = 37.699111843

Area of the cylinder in this problem

176π - 12π = 164π

8 0
3 years ago
Help!!! Now!!! Limited time!!
hammer [34]

Answer: 3

Step-by-step explanation: y=-2, also y=-2x+4. Therefore, we got a equation: -2=-2x+4. You then minus 4 from both sides of the equation and you will get -6=-2x. You then solve for x by dividing -6 by -2, you get x=3

6 0
3 years ago
What is the distance between the points (3, 5) and (3, 1)?
Aleksandr [31]

Answer:

4

Step-by-step explanation:

The x coordinate is the same so the distnce is only the difference in y

5 - 1 = 4

8 0
3 years ago
Read 2 more answers
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