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I am Lyosha [343]

3 years ago

6

The combined mass of two children is 75lbs. The first child is four times the mass of the second child. What are the masses of t

he two children?

2 answers:

rosijanka [135]3 years ago

6 0

First child would be 60 lb and the second is 15

gayaneshka [121]3 years ago

3 0

The second child is about 19lbsif you want to round it otherwise it's 18 something lbs, so the first child is about... 57.

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Answer: the answer is 28

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2 years ago

Which number is located to the right of -1 2/3 on the horizontal number line?

Vanyuwa [196]

The number is negative so it will get smaller. I'm not sure if you are going by 3rd's or whole numbers but the answer may be -1 1/3 or-2/3

6 0

3 years ago

Please solve this for me using substitution

Vinvika [58]

<h2> <u>Explanation</u><u>:</u></h2>

$\bf \underline{★Given-} \\$

$\textsf{4x + 5y = 8};$

$\textsf{5x + 4y = 12}$

$\bf \underline{★To\: find-} \\$

$\textsf{the value of x and y in equation?}$

$\bf \underline{★Solution-} \\$

$\sf \leadsto 4x + 5y = 8 - - - (i)$

$\sf \leadsto 5x + 4y = 12 - - - (ii)$

By first equation,

$\sf \leadsto 4x + 5y = 8$

$\sf \leadsto 4x = 8 - 5y$

$\sf \leadsto x = \dfrac{8 - 5y}{4}$

$\textsf{Now, we can find the original value of Y.}\\$

$\sf \leadsto 5x + 4y = 12$

$\sf \leadsto 5 \bigg( \dfrac{8 - 5y}{4} \bigg) + 4y = 12$

$\sf \leadsto \dfrac{40 - 25y}{4} + 4y = 12$

$\sf \leadsto \dfrac{40 - 25y + 16y}{4} = 12$

$\sf \leadsto \dfrac{40 - 9y}{4} = 12$

$\sf \leadsto 40 - 9y = 12(4)$

$\sf \leadsto 40 - 9y = 48$

$\sf \leadsto -9y = 48 - 40$

$\sf \leadsto -9y = 8$

$\sf \leadsto y = \dfrac{ -8}{9}$

$\textsf{Now, we can find the original value of X.}\\$

$\sf \leadsto 4x + 5y = 8$

$\sf \leadsto 4x + 5 \bigg( \dfrac{ -8}{9} \bigg) = 8$

$\sf \leadsto 4x - \dfrac{40}{9} = 8$

$\sf \leadsto \dfrac{36x - 40}{9} = 8$

$\sf \leadsto 36x - 40 = 8(9)$

$\sf \leadsto 36x - 40 = 72$

$\sf \leadsto 36x = 72 + 40$

$\sf \leadsto 36x = 112$

$\sf \leadsto x = \dfrac{112}{36}$

$\underline{\textsf{Answer-}}\\$

Therefore, the values of x and y are -8/9 and 112/36 respectively.

6 0

2 years ago

A class tossed coins and recorded 165 heads and 172 tails. What is the experimental probability of tails?

Nata [24]

165+172=337

172/337 is the experimental probability of tails.

Hope this helps!

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3 years ago

Read 2 more answers

On a scale drawing, the scale is 1/2 inch = 1 foot. What are the dimentions on the scale drawing of a room that is 22 feet by 17

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It would be 44 inch by 34 inch

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3 years ago