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3 years ago

Please help, I don’t understand it so explain don’t just put the answer if u can lols

Mathematics

2 answers:

ludmilkaskok [199]3 years ago

7 0

Answer

27 days

Step-by-step explanation:

father= 45 days

oldest son + father=27 days

youngest + father= 36 days

45-27=18

45-36=9

18+9=27

so it would take 27 days for both sons to complete the house

18 days=oldest son

9 days =youngest son

ddd [48]3 years ago

4 0

Answer:

80 1/2 days between first and second son

This in days is 1-81 days to finish one house.

Step-by-step explanation:

1st Son = 45 + 18 + 27 = 90 saved the father 18 days. 27 of 45 = 60% inv 40%

2nd Son = 45 + 9 +36 = 90 saved the father 9 days = 36 of 45 = 80% inv 20%

1st Son 40% needs to be increased 60% to complete house

2nd Son 20% needs to be increased 80% to complete house

1st Son House takes Son 1 in days = 27 x 1.60% = 43.2 + 27 = 60.2

2nd Son House takes Son 2 in days = 36 x 1.80%= 64.8 + 36 = 100.8

60.2+100.8 = 161 days.

=161 days for 2 homes.

= 80 1/2 days for one home.

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3 years ago

M(3,6) is the midpoint of Rs The coordinates of S are (5,9). What are the coordinates of R? O 17, 12) O (4, 7.5) O (6, 12) O (1,

miss Akunina [59]

Answer:

Step-by-step explanation:

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2 years ago

Jonathan's age is 1/3 Belinda's age now in 12 years Belinda will be m years old write an algebraic expression to represent Brend

vodomira [7]

Answer:

Kindly check explanation

5 years from now, Johnathan will be (5 + 4) = 9 years

Step-by-step explanation:

Let Belinda's age = x

Jonathan's age =1/3 x

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Belinda's age now = x

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5 0

3 years ago

If triangle ABC is similar to triangle DEC, find the values of x and y.

Mumz [18]

The values are x=8 and y=35, if the given ΔABC and ΔDEC are equal, it is obtained by Pythagoras theorem.

Step-by-step explanation:

The given are,

From ΔABC,

AB= 6

BC= 10

AC = x

From ΔDEC,

CD= 28

DE= 21

CE = y

Step:1

Pythagoras theorem from ΔABC,

$BC^{2}=AB^{2} + AC^{2}$ ...............(1)

Substitute the values,

$10^{2}$ = $6^{2}$ + $AC^{2}$

100 = 36 + $AC^{2}$

$AC^{2}$ = 100 - 36

= 64

AC = $\sqrt{64}$

AC = 8

AC = x = 8

Step:2

Pythagoras theorem for ΔDEC,

$CE^{2} = CD^{2} + DE^{2}$ ................(2)

From the values,

$CE^{2}$ = $28^{2}$ + $21^{2}$

$CE^{2}$ = 784 + 441

= 1225

CE = $\sqrt{1225}$

CE = 35

CE = y = 35

Result:

The values are x=8 and y=35, if the given ΔABC and ΔDEC are equal.

5 0

2 years ago